Vacuum packaged electromagnetic 2D scanning micromirror
Publication date: Available online 18 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Seung-Han Chung, Seung-Ki Lee, Chang-Hyeon Ji, Jae-Hyoung ParkAbstractWe herein present the design, fabrication, and wafer-level packaging of an electromagnetic biaxial scanning micromirror. The vacuum packaging of the micromirror was implemented by anodically bonding the glass cap wafer to both sides of the silicon substrate with the micromirror. The measured quality factor of the vacuum packaged micromirror is 1,923.2 for the horizontal scan, whereas that of the device in the air is 649.6. The maximum optical scan angle of...
Source: Sensors and Actuators A: Physical - March 19, 2019 Category: Physics Source Type: research

Interface separation phenomena during immersion in water of anodically bonded Kovar alloy–borosilicate glass joints with application of opposite polarity
Publication date: Available online 18 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Satoru Nishikawa, Makoto TakahashiAbstractAnodic bonding is a process for bonding metal to ion-conductive glass at a temperature below the glass softening point, where a direct current voltage is applied to the metal and glass with an anode and cathode, respectively. The bond interface was not immediately separated when opposite polarity was applied to anodically bonded Kovar alloy–borosilicate glass, however, the bond interface was separated after long-term exposure to air. Given that the bond interface was not change...
Source: Sensors and Actuators A: Physical - March 19, 2019 Category: Physics Source Type: research

Design and fabrication of an annular array high intensity focused ultrasound transducer with an optimal electrode pattern
In this study, an annular high intensity focused ultrasound (HIFU) array transducer was developed to suppress the level of sidelobes below a given requirement with a minimum number of channels. The electrode patterns analyzed for the transducer were equal electrode area pattern and variable electrode width pattern. In finite element analysis of the transducer performance, the variable electrode width pattern transducer was proven to be able to suppress the level of sidelobes below -12 dB with 9 channels, while the equal electrode area pattern transducer required at least 10 channels to suppress the level of sidelobe...
Source: Sensors and Actuators A: Physical - March 19, 2019 Category: Physics Source Type: research

Multimaterial 3D Printed Soft Actuators Powered by Shape Memory Alloy Wires
Publication date: Available online 19 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Saeed Akbari, Amir Hosein Sakhaei, Sahil Panjwani, Kavin Kowsari, Ahmad Serjourei, Qi GeAbstractShape memory alloys (SMAs) have been widely used to fabricate soft actuators by embedding SMA wires into various soft matrices manufactured by conventional moulding methods or novel three-dimensional (3D) printing techniques. However, soft matrices of SMA based actuators are typically fabricated from only one or two different materials. Here, we exploit the great manufacturing flexibility of multimaterial 3D printing to fabricate ...
Source: Sensors and Actuators A: Physical - March 19, 2019 Category: Physics Source Type: research

Application of liquid scintillators as energy conversion materials in nuclear batteries
Publication date: Available online 19 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Zhengrong Zhang, Xiaobin Tang, Yunpeng Liu, Zhiheng Xu, Huangfeng Ye, Feng Tian, Kai Liu, Zicheng Yuan, Wang ChenAbstractThe application of liquid scintillators as energy conversion materials in nuclear batteries was proposed. By introducing liquid scintillators, the output properties of radioluminescence (RL) nuclear batteries based on different liquid scintillators were investigated via low-energy X-ray. Results indicated that the values of short circuit current Isc and maximum output power Pmax increased as the X-ray inte...
Source: Sensors and Actuators A: Physical - March 19, 2019 Category: Physics Source Type: research

Ultra high frequency acoustic wave propagation in fully polymer based surface acoustic wave device
Publication date: Available online 19 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Arvind Kumar, George Thachil, Soumya DuttaAbstractSurface acoustic wave (SAW) device, which integrates the generation, propagation and detection of acoustic waves into the same device, has been known to be an essential functional unit for sensors and electromechanical systems. However, high substrate cost and process complexity of traditional inorganic SAW devices have triggered extensive research efforts to seek for alternative low cost solution, especially for disposable application. Poly(vinylidenefluoride)[P(VDF)] and it...
Source: Sensors and Actuators A: Physical - March 19, 2019 Category: Physics Source Type: research

Highly sensitive photoacoustic gas sensor based on multiple reflections on the cell wall
Publication date: Available online 16 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Ke Chen, Bo Zhang, Shuai Liu, Feng Jin, Min Guo, Yewei Chen, Qingxu YuAbstracteliminate interference from the fundamental frequency signal generated by the wavelength-independent absorption of the cell wall. The internal volume of the PA cell is only 848 μL. To further minimize the PA sensor, a micro-electro-mechanical system (MEMS) microphone is used as the acoustic detector. In order to evaluate the performance of the designed sensor, trace C2H2 is detected as the target gas at the wavelength of 1531.588 n...
Source: Sensors and Actuators A: Physical - March 18, 2019 Category: Physics Source Type: research

Novel concept of a low-power high-volume microfluidic actuator: theory of operation and experimental characterization
Publication date: Available online 16 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Quentin Lavigne, Nicolas Terrier, Guillaume Noetinger, Duc-Duy Tran, Simon Kulifaj, Pascal Kleimann, Patrick Pittet, Bruno BergeAbstractA novel concept of microfluidic actuator based on a slack metallized film confined between two parallel grid-electrodes separated by a gap is presented. The film is loosely attached such that it can move freely between the two grid-electrodes. Upon voltage application between the metallized film and one grid-electrode, electrostatic attraction tends to press the metallized film on the grid, ...
Source: Sensors and Actuators A: Physical - March 18, 2019 Category: Physics Source Type: research

Self-supported films of poly(methyl methacrylate) (PMMA) containing TmIII-doped upconverting core@shell nanoparticles as high sensitivity temperature optical probe
Publication date: Available online 15 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Emille M. Rodrigues, Diogo A. Gálico, Italo O. Mazali, Fernando A. SigoliAbstractIn this work, we describe the synthesis, and thermal sensitivity of a composite material containing NaYbF4:Gd:Tm:Ho@NaYF4:Yb Ln-UCNP dispersed in PMMA matrix. The LIR between Tm3+ upconversion emissions at 450 and 475 nm resulted in a high relative thermal sensitivity of 2.8 % K-1 at 313 K and an operational range higher than 100 K (from 200 to 313 K) which is not very explored in the literature. The upconversi...
Source: Sensors and Actuators A: Physical - March 16, 2019 Category: Physics Source Type: research

Using force-displacement relations to obtain actuation parameters from artificial muscles
Publication date: Available online 12 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Geoffrey M. Spinks, Shannon E. Bakarich, Shazed Aziz, Bidita Salahuddin, Hai XinAbstractMany different test methods are currently used to characterise the output of artificial muscle materials but few studies report the full range of possible force and displacements that can be generated by a given material when activated with a given input stimulus but when operated against different external loads. The measurement of the loading and unloading force extension curves in tension in both the un-activated and activated states i...
Source: Sensors and Actuators A: Physical - March 13, 2019 Category: Physics Source Type: research

Gummy bear-based gnathodynamometer for masticatory diagnostics
Publication date: Available online 12 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Donghyun Lee, Beelee ChuaAbstractWe have demonstrated the feasibility of a gummy bear-based gnathodynamometer for masticatory diagnostics. Using a gummy bear as a force transducer and bamboo cantilevers as mechanical springs, the masticatory force of a human mandible can be measured via electrical impedance measurement (presented as the output voltage of the gnathodynamometer). The frequency response of the gummy bear is experimentally tested from 0.1 to 100 kHz and shown to be consistent with the analytical model. Fo...
Source: Sensors and Actuators A: Physical - March 13, 2019 Category: Physics Source Type: research

Lossy Mode Resonance optical sensors based on indium-gallium-zinc oxide thin film
Publication date: Available online 9 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): A. Ozcariz, M. Dominik, M. Smietana, C.R. Zamarreño, I. Del Villar, F.J. ArreguiAbstractThis work discusses an application of electrically conductive and optically transparent indium-gallium-zinc oxide (IGZO) thin films for fabrication of lossy mode resonance (LMR) based optical fiber refractometers. The films have been deposited on both 200 µm in diameter multimode fused silica fiber and D-shaped fiber structure. A sensitivity of 12,929 nm/RIU was obtained in the refractive index range between 1.39 and 1.42. In ...
Source: Sensors and Actuators A: Physical - March 10, 2019 Category: Physics Source Type: research

Pressure-Sensitive Paint with Imprinted Pattern for Full-Field Endoscopic Measurement Using a Color Camera
Publication date: Available online 9 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Di Peng, Zhe Zhong, Feng Gu, Wenwu Zhou, Fei Qi, Yingzheng LiuAbstractAn endoscopic system for pressure-sensitive paint (PSP) measurement was presented in the current study, which was composed of a fiberscope, a diode laser and a color camera. The fiberscope was integrated by optical fibers (for transmitting the laser excitation) and a set of lenses (for delivering the PSP images to the camera). Here, a unique PSP with imprinted pattern was developed to address the key issue of limited viewing angle/area encountered during en...
Source: Sensors and Actuators A: Physical - March 10, 2019 Category: Physics Source Type: research

Ultrasensitive refractive index sensor based on parallel-connected dual Fabry-Perot interferometers with Vernier effect
Publication date: Available online 9 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Tianjun Yao, Shengli Pu, Yongliang Zhao, Yuqi LiAbstractA kind of ultrasensitive refractive index sensor based on parallel-connected dual Fabry-Perot interferometers (FPIs) with Vernier effect is proposed and demonstrated. The open and closed cavity FPIs are used as the sensing and reference units, respectively. The Vernier effect is realized by superimposing the reflective comb spectra of the dual FPIs, which have slightly different free spectral ranges. The open groove of the open cavity FPI provides a convenient, efficient...
Source: Sensors and Actuators A: Physical - March 10, 2019 Category: Physics Source Type: research

Enhanced Robust Impedance Control of a Constrained Piezoelectric Actuator-based Surgical Device
Publication date: Available online 9 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Jun Yik Lau, Wenyu Liang, Kok Kiong TanAbstractA robust impedance control algorithm for a semi-automated surgical device called ventilation tube applicator (VTA) was developed based on the dynamic coordination of force and position control. This paper presents an enhanced robust impedance control scheme for the VTA. The control approach is proposed for compliant manipulation in which motion and force trajectories are controlled to achieve position and force regulation. The control scheme is formulated to accommodate parametri...
Source: Sensors and Actuators A: Physical - March 10, 2019 Category: Physics Source Type: research

Editorial Board
Publication date: 1 April 2019Source: Sensors and Actuators A: Physical, Volume 288Author(s): (Source: Sensors and Actuators A: Physical)
Source: Sensors and Actuators A: Physical - March 10, 2019 Category: Physics Source Type: research

Self-biased magnetoelectric current sensor based on SrFe12O19/FeCuNbSiB/PZT composite
Publication date: Available online 6 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Zhengyu Ou, Caijiang Lu, Aichao Yang, Hai Zhou, Zhongqing Cao, Renren Zhu, Hongli GaoAbstractThis paper presents a packaged current sensor based on a SrFe12O19/FeCuNbSiB/PZT self-biased magnetoelectric (ME) cantilever. The hard magnetic material of the SrFe12O19 ribbon with a large coercive field provides a huge internal magnetic field to bias the magnetostrictive FeCuNbSiB(Fe73.5Cu1Nb3Si13.5B9) layers, which can increase the magnetic moment reorientation of FeCuNbSiB layers. Consequently, by coupling the vortex magnetic fiel...
Source: Sensors and Actuators A: Physical - March 8, 2019 Category: Physics Source Type: research

A Generalized Approach on Bending and Stress Analysis of Beams with Piezoelectric Material Bonded
Publication date: Available online 6 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Ning Chen, Peng Yan, Jun OuyangAbstractThe modeling and analysis of piezoelectric cantilevers are critically important in the design of micro intelligent systems, where piezoelectric beams serve as major components in micro sensors, actuators or energy harvesters. In this paper, we propose an analogy modeling method for the unimorph and bimorph piezoelectric beams, which helps to improve the accuracy of the neutral plane location of piezoelectric beams with different thickness ratios and total thicknesses. In particular, the ...
Source: Sensors and Actuators A: Physical - March 8, 2019 Category: Physics Source Type: research

Highly Sensitive Screen Printed Strain Sensors on Flexible Substrates via Ink Composition Optimization
Publication date: Available online 6 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Nickolas Anderson, Nicole Szorc, Vimal Gunasekaran, Shiv Joshi, Gregory JursichAbstractMultiple screen printed strain sensors prepared with different compositions of silver and carbon particle containing inks are evaluated in terms of resistance, strain sensitivity, response linearity, and device fabrication repeatability over ten ink compositions. This approach leads to low-cost fabrication of highly sensitive strain sensors required for large area mapping of low level strain. By varying composition of two inks having large ...
Source: Sensors and Actuators A: Physical - March 8, 2019 Category: Physics Source Type: research

Study on the influence of residual stress on the mechanical characteristics of free-standing Si-membranes processed by DRIE process
Publication date: Available online 6 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): S. Boominathasellarajan, P. Saravanan, K.K. Pandey, V. Srihari, H.K. PoswalAbstractThe mechanical behavior of free-standing Si membranes (diaphragms) fabricated by deep reactive ion etching (DRIE) was studied in order to emphasis the magnitude of process-induced stress and/or strain distribution in both square and circular diaphragms. For this purpose, 25-μm thick circular and square diaphragms with 4-mm diameter (or side-size) were fabricated using silicon-on-insulator wafer. The thickness and surface homogeneities of the...
Source: Sensors and Actuators A: Physical - March 8, 2019 Category: Physics Source Type: research

Measurement of water holdup in vertical upward high water-cut oil-in-water flows using a high frequency sensor
Publication date: Available online 7 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Jing Ma, Ning-De Jin, Da-Yang Wang, Dong-Yang Liu, Wei-Xin LiuAbstractIn the present study, we propose a high frequency sensor (HFS) for water holdup measurement in high water-cut oil-in-water flow with low velocity. Through analyzing amplitude-frequency characteristics and phase-frequency characteristics of HFS in different working frequencies using the finite element method, the optimal working frequency of HFS is determined, and the relationship between the phase output of HFS and the water holdup is analyzed. With the des...
Source: Sensors and Actuators A: Physical - March 8, 2019 Category: Physics Source Type: research

High acceleration and angular velocity micro vibrating platform with IMU integration
Publication date: Available online 5 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Feng Qin, Xiangyu Sun, Tingting Yang, Dongdong Gong, Yicheng Wang, Yu Chen, Xiaoshi Li, Gang Dai, Jingfu Bao, Yijia DuAbstractIntegrated multiple degree of freedom (DOF) micro vibrating platform is an emerging approach for self-calibration of long-term drifts in scale factor and offset of multi-axis MEMS-based inertial measurement units (IMU). A 3-DOF piezoelectric micro vibrating platform based on PZT-SOI with high acceleration and angular velocity by wafer-level fabrication is presented. To achieve the motion of out-of-plan...
Source: Sensors and Actuators A: Physical - March 6, 2019 Category: Physics Source Type: research

Design A Composite Piezoelectric Motor using Face-shear and Longitudinal Resonance Vibration
Publication date: Available online 4 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Yung Ting, Hao-Ping Lin, Yu-Kuei Sung, Chih-Hsuan YuAbstractA new flexural-wave of a piezoelectric composite motor constructed with d14 and d13 is developed. The piezoelectric motor using dual d14 mode is firstly designed with an output head located in the middle of the structure, which is able to produce two-way motion. However, it is found that the longitudinal deflection is not large enough to preserve appropriate contact with the slider and normal contact force. A composite structure of single-piece ceramic that combines ...
Source: Sensors and Actuators A: Physical - March 5, 2019 Category: Physics Source Type: research

Improvement of unidirectional focusing periodic permanent magnet shear-horizontal wave electromagnetic acoustic transducer by oblique bias magnetic field
Publication date: Available online 4 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Hongyu Sun, Songling Huang, Qing Wang, Shen Wang, Wei ZhaoAbstractWe propose a new unidirectional point focusing shear horizontal (SH) guided wave electromagnetic ultrasonic transducer (EMAT) with an angled periodic permanent magnet (PPM) in this work. The angled PPM developed here provides an angled bias magnetic field to achieve the EMAT’s unidirectional focusing capability. The characteristics of the magnetic field distribution are analyzed by numerical and theoretical calculations. The simulation and experimental re...
Source: Sensors and Actuators A: Physical - March 5, 2019 Category: Physics Source Type: research

Simulation and Circuit Implementation Memristive Chaotic System and Its Application for Secure Communication Systems
Publication date: Available online 2 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): M.E. Sahin, Z.G. Cam, H. Guler, S.E. HamamciAbstractOne of the most popular applications for chaotic systems is secure communication. The main purpose is to hide the information signal to be transmitted in a secure way, into a chaotic signal which is difficult to detect, and then to recover the information signal again. In response to this, memristor discovered by Leon O. Chua, known as the fourth basic element or the missing relationship can be implemented in chaotic circuit for a secure communication. The memristor based ch...
Source: Sensors and Actuators A: Physical - March 5, 2019 Category: Physics Source Type: research

Characterization of polarimetric based three axis atomic magnetometer
Publication date: Available online 4 March 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Swarupananda Pradhan, Rita BeheraAbstractThe operation of polarimetric based single beam three axis atomic magnetometer is studied. The magnetometer operates in presence of small bias magnetic field. Its salient features are compared with the analysis of Bloch equation. The sensitivity of the device along three orthogonal directions are measured in low frequency regime, where 1/f noise adversely affect the sensitivity. The crosstalk among the three axes magnetic field measurements and relative phase shifts are analysed using ...
Source: Sensors and Actuators A: Physical - March 5, 2019 Category: Physics Source Type: research

Towards a theory of actuators: A new classification proposal for actuation systems
Publication date: Available online 27 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Bertrand TonduAbstractA general actuator definition is proposed, which characterizes the actuator by a force function with two positive components: a motor-component and a resistive-component. For a constant input value, a stable equilibrium can result under the form of an output which can have the dimension of an acceleration, a velocity or a position, thus giving the actuator its corresponding type. We also introduce a concept of type transformation from acceleration or velocity-type to velocity or position-type. Such p...
Source: Sensors and Actuators A: Physical - February 28, 2019 Category: Physics Source Type: research

Non-graphene two-dimensional nanosheets for temperature sensing based on microfiber interferometric platform: Performance analysis
Publication date: Available online 26 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Gaurav Sharma, Anand M. Shrivastav, Ankit Kumar, Rajan JhaAbstractMaterials belongs to the family of two-dimensional materials have attracted great scientific attention inspired by the success of graphene. Now, the scientists have been discovered new monolayer materials by combining a variety of elements, such as molybdenum with sulfur and boron with nitrogen. Owing the unique properties, with ultrathin thickness, devices based on these materials exhibit novel behavior. Here we have synthesized these materials via various...
Source: Sensors and Actuators A: Physical - February 27, 2019 Category: Physics Source Type: research

Comprehensive Pressure Profiling to Develop Next-Generation Compression Treatment for Lymphedema: Testing Efficacy of High Resolution Sensors
This study proposes the establishment of Gage Linearity and Bias study protocols to assess efficacy of pressure testing sensors within and between studies. While several such sensors are commercially available, they have not been tested in clinically relevant pressure ranges or contexts. The efficacy of a current commercial, high-resolution and compliance pressure sensor (Tekscan 9833E Medical Sensor) was assessed using Gage Linearity and Bias methods. The Tekscan sensor proved insufficient for the accurate measurement of target pressure ranges applied by lymphedema compression sleeves. The study demonstrates that standard...
Source: Sensors and Actuators A: Physical - February 26, 2019 Category: Physics Source Type: research

Aligned carbon nanotube based sensors for strain sensing applications
Publication date: Available online 25 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): A. Santos, L. Amorim, J.P. Nunes, L.A. Rocha, A.F. Silva, J.C. VianaAbstractThis paper presents an aligned carbon nanotube (CNT)-based strain sensor. Vertical aligned carbon nanotubes (VA-CNT), synthesized by chemical vapour deposition (CVD), were knocked down onto polymeric films, in order to obtain a thin 10 × 10 × 0.05 mm CNT patch. Different polymeric substrates, ADEXepoxy, polyethylene terephthalate (PET) and polyimide (PI) were used. The samples’ morphology before...
Source: Sensors and Actuators A: Physical - February 26, 2019 Category: Physics Source Type: research

Room temperature conductive type metal oxide semiconductor gas sensors for NO2 detection
Publication date: Available online 25 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Chao Zhang, Yifan Luo, Jiaqiang Xu, Marc DebliquyAbstractAir pollution is nowadays a big issue regarding the health of human beings. Among the toxic gases emitted in the atmosphere, NO2 is the most problematic one and a lot of countries or cities want to monitor its concentration in order to be able to take measures to reduce it. Therefore, it is urgent to develop NO2 sensors with high performance, low power consumption and low cost. Several technologies have been developed for this purpose. A very popular technology is b...
Source: Sensors and Actuators A: Physical - February 26, 2019 Category: Physics Source Type: research

Thin-film diaphragms of cellulose nanofiber fabricated using high-concentration polar dispersion for application to MEMS actuators
Publication date: Available online 22 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Satomitsu ImaiAbstractA method of fabricating thin-film diaphragms of cellulose nanofiber (CNF) for the application of displacement membranes of MEMS actuators or microfluidic devices was developed and the mechanical characteristics were evaluated. CNF has high strength and elastic modulus; however, it is necessary to provide flexibility for the use as a displacement membrane. A polar solvent, tertiary-butyl alcohol (tBA), at a high concentration of approximately 66 vol%, was used to thin the CNF film, that is, to ...
Source: Sensors and Actuators A: Physical - February 23, 2019 Category: Physics Source Type: research

R-phase Shape Memory Alloy Helical Spring Based Actuators: Modeling and Experiments
Publication date: Available online 22 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Pierre-Antoine Gédouin, Laurent Pino, Shabnam Arbab Chirani, Sylvain Calloch, Emmanuel Delaleau, Jean-Matthieu BourgeotAbstractThe main goal of this paper is to propose some analytical or pseudo-analytical tools facilitating the study and modeling of SMA helical spring-based actuators. Particular attention is paid to R-phase SMA helical spring-based actuators (i.e., springs made in NiTi and concerned by R-phase transformation phenomena). First, simplified models (i.e., based on beam theory framework) of R-phase SMA...
Source: Sensors and Actuators A: Physical - February 23, 2019 Category: Physics Source Type: research

Impact of FBAR design on its sensitivity as in-liquid gravimetric sensor
Publication date: Available online 22 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): T. Mirea, J. Olivares, M. Clement, Enrique IborraAbstractIn contrast to quartz crystal microbalances, the sensitivity of thin film bulk acoustic wave resonators (FBARs) is strongly dependent on all films comprising the multilayered structure. Previous studies proved that placing low acoustic impedance materials at the sensing surface of longitudinal-mode FBARs operating in air can enhance their mass sensitivity by modifying the energy trapped at the sensing surface. Here we investigate if the in-liquid sensitivity to dens...
Source: Sensors and Actuators A: Physical - February 23, 2019 Category: Physics Source Type: research

Piezoresistivity and piezoelectricity discovered in aluminum, with relevance to structural self-sensing
Publication date: Available online 22 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Xiang Xi, D.D.L. ChungAbstractThis work provides the first report of piezoresistivity and piezoelectricity in aluminum, as observed in the in-plane direction for aluminum foil and Al 2024-O alloy bar, which exhibit similar properties, though the piezoelectricity of the latter is slightly stronger. These phenomena enable structural self-sensing and multifunctionality. The stress (≤66 MPa) and strain (≤0.096%) are in the elastic regime. The piezoresistivity is strong and negative, with gage factor -1630, and pr...
Source: Sensors and Actuators A: Physical - February 23, 2019 Category: Physics Source Type: research

Highly Sensitive Capacitive Cell Based on a Novel CuTsPc-TiO2 Nanocomposite Electrolytic Solution for Low-Temperature Sensing Application
Publication date: Available online 23 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Shahino Mah Abdullah, Saqib Rafique, Khairus Syifa Hamdan, Nur Adilah Roslan, Lijie Li, Khaulah SulaimanAbstractThis work demonstrates a highly efficient electrochemical cell based on the hybrid nanofluid of titanium dioxide (TiO2) nanoparticles dispersed in a water-based copper (II) phthalocyanine-tetrasulfonic acid tetrasodium salt (CuTsPc) solution. A chemical cell of ITO/nanofluid/ITO has been fabricated to study the effect of temperature variations towards its capacitance and resistance. The resultant device possesse...
Source: Sensors and Actuators A: Physical - February 23, 2019 Category: Physics Source Type: research

Temperature effect on GMI sensor: comparison between diagonal and off-diagonal response
Publication date: Available online 21 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Julie Nabias, Aktham Asfour, Jean-Paul YonnetAbstractIn this paper, the effect of temperature on Giant Magneto-Impedance (GMI) sensors is studied in amorphous wire Co-Fe-Si-B from Unitika. Both diagonal, Z11, and the off-diagonal, Z21, components of the impedance tensor are considered, with a primary focus on the changes of intrinsic sensitivity and offset, which are the most crucial relevant quantities for practical sensor implementation. Experiments are conducted in the almost industrial temperature range of [-20&thinsp...
Source: Sensors and Actuators A: Physical - February 22, 2019 Category: Physics Source Type: research

Editorial Board
Publication date: 1 March 2019Source: Sensors and Actuators A: Physical, Volume 287Author(s): (Source: Sensors and Actuators A: Physical)
Source: Sensors and Actuators A: Physical - February 20, 2019 Category: Physics Source Type: research

Time-dependent switching of temperature-sensitive nanofilm processors
Publication date: Available online 18 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Maximilian Deutsch, Christian Schoo, Meinhard KnollAbstractNanofilm processors are paper-thin self-writing smart labels based on an electrochemical cell. In the presence of a counter electrode, a nanoscale aluminum layer is oxidized laterally and is optically detectable by a sharp boundary between the aluminum and the oxidized aluminum, without the need for an external power supply. Nanofilm processors have different sensory properties. In this article, we describe the basics of temperature-dependent and temperature-indep...
Source: Sensors and Actuators A: Physical - February 19, 2019 Category: Physics Source Type: research

Dynamic Response of a Tunable MEMS Accelerometer Based on Repulsive Force
Publication date: Available online 18 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Meysam Daeichin, Mehmet Ozdogan, Shahrzad Towfighian, Ronald MilesAbstractThis paper describes a tunable MEMS electrostatic accelerometer that uses repulsive electrode configuration so that the design is not hampered by capacitive pull-in instability. The repulsive force configuration enables the increase of DC bias voltage without suffering from the pull-in failure mode. This flexibility in increasing voltage can be employed as a tuning parameter to widen the working frequency range and to improve the robustness of the a...
Source: Sensors and Actuators A: Physical - February 19, 2019 Category: Physics Source Type: research

Fast packaging by a partially-crosslinked SU-8 adhesive tape for microfluidic sensors and actuators
Publication date: Available online 18 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Zebing Mao, Kazuhiro Yoshida, Joon-wan KimAbstractThis paper proposes a novel SU-8 adhesive tape by using the dose-controlled UV exposure method, which enables the fast packaging with fluidic interconnections for microfluidic sensors and actuators. The conventional packaging for microfluidic devices demands two complicated steps: (1) to drill the fluidic connections on the glass cover in the first process, which may make the glass cover broken due to poor machinability of glass; and then (2) to spread a thin adhesive on t...
Source: Sensors and Actuators A: Physical - February 19, 2019 Category: Physics Source Type: research

Efficiency Optimization of Rotary Ultrasonic Motors Using Extremum Seeking Control with Current Feedback
Publication date: Available online 18 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Abdullah Mustafa, Takeshi MoritaAbstractDespite their great features, ultrasonic motors’ (USM) driving schemes still suffer from suboptimum driving efficiencies and limited operating range. The driving efficiency and operation range are mainly functions of the vibration amplitude and the preload. Vibration amplitude is generally controlled by means of adjusting the driving frequency. Unfortunately, there exists a narrow frequency band where efficiency is maximized resulting in a limited output power range. Due to te...
Source: Sensors and Actuators A: Physical - February 19, 2019 Category: Physics Source Type: research

Ultrasonic motor with embedded preload mechanism
Publication date: Available online 19 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Tomoya Kazumi, Yuta Kurashina, Kenjiro TakemuraAbstractA linear/rotary ultrasonic motor, which is driven using a friction force, generally requires a preload mechanism between the slider/rotor and the stator. The preload mechanism is of considerable importance to the motor’s ability to produce a practical thrust/torque because the output thrust/torque is dependent on the friction force. However, the preload mechanism generally occupies a relatively large space as a proportion of the space for the entire motor, which...
Source: Sensors and Actuators A: Physical - February 19, 2019 Category: Physics Source Type: research

A Novel Structure Design and Fabrication Method for Low Liquid Consumption and High Precision Device of Colorimeter in Water Quality Detection
Publication date: Available online 15 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Jun-Chao Yan, Jun Ren, Lin-Lin Ren, Yi Yang, Si-Fan Yang, Tian-Ling RenAbstractColorimeters based on the Lambert Beer law is now being widely used in water quality detection system. In this paper, we reported a novel colorimeter with low liquid consumption and high precision by optimizing the design of its transition zone and detection area, which would improve the absorbance for specific elements. Combined with stereoscopic fabrication method, six parts including the entrance and exit parts of liquid, the fluid transitio...
Source: Sensors and Actuators A: Physical - February 16, 2019 Category: Physics Source Type: research

Biomimetic strain sensors based on patterned polydimethylsiloxane and Ir nanoparticles decorated multi-walled carbon nanotubes
Publication date: Available online 15 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Tian-Cheng Lai, Chang Fang, Chang Liu, Xi-Rui Zhao, Yan-Qiang Cao, Di Wu, Ai-dong LiAbstractIn this work, we propose a new design of flexible strain sensors based on biomimetic patterned-polydimethylsiloxane (P-PDMS) and multi-walled carbon nanotubes (MWCNTs) decorated with Ir nanoparticles (NPs) deposited by atomic layer deposition (ALD). The biomimetic flexible strain sensors of Ir NPs@MWCNTs on patterned PDMS show superior sensitivity (34.96), larger sensing range (0-30%), better stability (>10000 stretch and release...
Source: Sensors and Actuators A: Physical - February 16, 2019 Category: Physics Source Type: research

Compact micro-Pirani vacuum sensor based on series diodes without heating structure
Publication date: Available online 14 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Debo Wei, Jianyu Fu, Ruiwen Liu, Ying Hou, Chao Liu, Weibing Wang, Dapeng ChenAbstractDiode based micro-Pirani vacuum sensors attract considerable attention because they do not require special materials and are compatible with complementary metal oxide semiconductors (CMOS). However, their complex heating structure makes it difficult to reduce the sensor size. This paper reports a novel compact micro-Pirani vacuum sensor based on series diodes. The self-heating effect of the series diodes helps simplify the structural des...
Source: Sensors and Actuators A: Physical - February 15, 2019 Category: Physics Source Type: research

Calibration Technique for Rotating PCB Coil Magnetic Field Sensors
Publication date: Available online 13 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Joseph DiMarco, Giordana Severino, Pasquale ArpaiaAbstractA high-accuracy calibration of inductive coil sensors based on Printed Circuit Board (PCB), commonly used in rotating coil field measurements of particle accelerator magnets, is presented. The amplitude and phase of signals with and without main field suppression are compared in order to simultaneously determine both the PCB rotation radius and the transverse offset of its plane from rotation center. The accuracy of planar wire placement on the PCB boards is exploi...
Source: Sensors and Actuators A: Physical - February 14, 2019 Category: Physics Source Type: research

A piezoelectric current response to small applied mechanical pressure changes of Lithium Sulfate Monohydrate nano-crystals
Publication date: Available online 12 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Hanna Bishara, Michelle Berezinsky, Alon Inbar, Shlomo BergerAbstractA piezoelectric current response to small applied mechanical pressure changes, as low as 1 Pa, in environmental 1 atm pressure conditions, is reported for Lithium Sulfate monohydrate (LSM) nano-crystals grown inside alumina pores. A higher piezoelectric sensitivity is obtained in crystals having a lower residual strain explained by a mechanical spring behavior. The crystals are grown by an isothermal precipitation process from over-saturate...
Source: Sensors and Actuators A: Physical - February 13, 2019 Category: Physics Source Type: research

Saw-tooth type piezoelectric multi-modal energy harvester
Publication date: Available online 8 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Dalius Mažeika, Andrius Čeponis, Piotr Vasiljev, Sergejus Borodinas, Birutė PliuskuvienėAbstractThe paper presents results of numerical and experimental investigations of a new design piezoelectric energy harvester based on a saw-tooth type cantilever array. The proposed energy harvester has multi-modal operation principle and allows to harvest mechanical vibrations energy in narrow frequency range. Moreover, the multi-modal operation principle of the harvester enable summation of bending strains of several cantilevers...
Source: Sensors and Actuators A: Physical - February 9, 2019 Category: Physics Source Type: research

An effective triple-band enhanced-infrared-absorption detection by honeycomb-shaped metamaterial-plasmonic absorber
Publication date: Available online 7 February 2019Source: Sensors and Actuators A: PhysicalAuthor(s): Erdem Aslan, Ekin Aslan, Omer Galip Saracoglu, Mustafa TurkmenAbstractNowadays, accessing to new electromagnetic properties can be realized by fabricating metamaterials consist of artificial functional and subwavelength-scaled structures. Promoting artificial and functional metamaterial designs with large electromagnetic near-field enhancement especially over throughout multiband spectral range can provide critical contributions for infrared spectroscopy applications. In this context, the design and experimental realizatio...
Source: Sensors and Actuators A: Physical - February 8, 2019 Category: Physics Source Type: research