Incoherent partial superposition modeling for single-shot angle-resolved ellipsometry measurement of thin films on transparent substrates
Ellipsometric measurement of transparent samples suffers from substrate backside reflection challenges, including incoherent and partial ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Lihua Peng Jian Wang Feng Gao Jun Zhang Wenzheng Zhai Liping Zhou Xiangqian Jiang Source Type: research
Long-range, high-precision optical calibration path based on an optoelectronic oscillator
We propose a laser ranging calibration optical path system using multiple optoelectronic oscillators (OEOs) that provides long range, high ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Ju Wang Xuemin Su Jinlong Yu Hao Luo Chuang Ma Lingchao Liu Source Type: research
Performance enhancement of multiple-mode FBMC-IM VLC systems with group-interleaved precoding
In this paper, we introduce the application of multiple-mode index modulation (MMIM) to filter bank multi-carrier (FBMC) for the first time ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Hong Wen Hao Chen Qinghui Chen Kexiong Liu Chen Chen Dalong Mo Source Type: research
Broadband high-contrast-grating-type waveplates for the terahertz range
The high-contrast-grating waveplates utilizing high contrast between silicon and air refractive indexes were developed in order to perform ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Surya Revanth Ayyagari Andreas K. Klein Simonas Indri š i ū nas Vytautas Janonis Daniil Pashnev Abdu Subahan Mohammed Guillaume Ducournau Andreas St ö hr Irmantas Ka š alynas Source Type: research
Sub-cycle strong-field tunneling dynamics in solids
Tunneling ionization is a crucial process in the interaction between strong laser fields and matter which initiates numerous nonlinear ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Shidong Yang Xiwang Liu Hongdan Zhang Xiaohong Song Ruixin Zuo Torsten Meier Weifeng Yang Source Type: research
Trace detection of cadmium (II) ions based on an excessively tilted fiber grating
Cadmium (Cd^2+) ion is one of the most crucial industrial pollutants that cause serious harm to the human body. We proposed and ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Xiujuan Zhong Wang Zhan Li Ma Guolu Yin Source Type: research
Controlled terahertz emission and electron localization dynamics in semiconductors
Dynamic localization has been thoroughly studied since 1986 by Dunlap in superlattice structures. However, its implications for terahertz ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Lu Liu Zengxiu Zhao Jianmin Yuan Source Type: research
Monolithic integrated chip of AWG and PD for an FBG interrogation system
To advance the development of a compact and highly integrated fiber Bragg grating (FBG) interrogation system, to the best of our knowledge, ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Ting Li Pei Yuan Shufeng Li Ran Xu Bingxiang Li Yiyao Yang Lianqing Zhu Source Type: research
High precision polishing of aluminum alloy mirrors through a combination of magnetorheological finishing and chemical mechanical polishing
After the aluminum alloy mirror machined by single point diamond turning (SPDT), the residual tool marks and surface accuracy of the ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Yang Bai Zhiyu Zhang Longxiang Li Xiao Luo Fukun Li Xuejun Zhang Source Type: research
Large detection range and high strain sensitivity fiber SPR sensor based on wave structure
To achieve a fiber strain sensor with a large detection range and high sensitivity, this paper proposes a wave structured fiber SPR strain ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Yong Wei Puxi Ren Chunlan Liu Tianci Jiang Chunbiao Liu Chen Shi Yixiong Tang Ziqiang Zhang Zhihai Liu Source Type: research
Off-axis telescope misalignment correction based on defocus spot moment features
Optical mirror misalignments, which are caused by assembly mistakes and changes in the surrounding environment (such as gravity, ... (Source: Optics Express)
Source: Optics Express - April 15, 2024 Category: Physics Authors: Wei Tang Yujia Liu Yiqian Gan Siheng Tian Qiong Tu Yang Li Yongmei Huang Hongyang Guo Source Type: research
Could JWST solve cosmology’s big mystery? Physicists debate Universe-expansion data
Nature, Published online: 15 April 2024; doi:10.1038/d41586-024-01115-3New results could help to end a long standing disagreement over the rate of cosmic expansion. But scientists say more measurements are needed. (Source: Nature AOP)
Source: Nature AOP - April 15, 2024 Category: Research Authors: Davide Castelvecchi Source Type: research
Toxicity evaluation of dose-escalation in hypofractionated regional nodal irradiation for breast cancer: a retrospective study
Regional nodal irradiation (RNI) to the axilla and supraclavicular area presents distinct toxicities, such as lymphedema and shoulder stiffness, compared to whole-breast irradiation. There is insufficient evidence on the safety of dose-escalation in hypofractionated RNI. We aimed to evaluate and compare toxicity rates in patients with breast cancer who received hypofractionated RNI with and without dose-escalation. (Source: International Journal of Radiation Oncology * Biology * Physics)
Source: International Journal of Radiation Oncology * Biology * Physics - April 15, 2024 Category: Radiology Authors: Euidam Kim, Ji Sung Yoo, Yeon-Joo Kim, Jungnam Joo, Eun sang Oh, Yoonsun Chung, Seung Hyun Chung, Tae Hyun Kim Tags: Clinical Investigation Source Type: research
Dual time-point [18F]FDG PET imaging for quantification of metabolic uptake rate: Evaluation of a simple, clinically feasible method
Semi-quantitative analysis of positron emission tomography (PET) images is commonly performed by measuring the standardized uptake value (SUV) [1 –3]. However, several factors can affect quantification via a single static PET scan at a late time-point post-injection (p.i.) [4]. PET radiopharmaceutical distribution is a dynamic process, and a compartmental model can describe the underlying mechanisms and provide additional kinetic parameters related to the underlying pathology. While several studies have shown the significant potential of dynamic imaging [3–10], this approach has some limitations for routine clinical us...
Source: Physica Medica: European Journal of Medical Physics - April 15, 2024 Category: General Medicine Authors: Rezvan Samimi, Alireza Kamali-Asl, Yashar Ahmadyar, J örg van den Hoff, Parham Geramifar, Arman Rahmim Tags: Original paper Source Type: research
Operando double-edge high-resolution X-ray absorption spectroscopy study of BiVO4 photoanodes
High energy resolution fluorescence detected X-ray absorption spectroscopy is a powerful method for probing the electronic structure of functional materials. The X-ray penetration depth and photon-in/photon-out nature of the method allow operando experiments to be performed, in particular in electrochemical cells. Here, operando high-resolution X-ray absorption measurements of a BiVO4 photoanode are reported, simultaneously probing the local electronic states of both cations. Small but significant variations of the spectral lineshapes induced by the applied potential were observed and an explanation in terms of the occupat...
Source: Journal of Synchrotron Radiation - April 15, 2024 Category: Physics Authors: Piccioni, A. Kopula Kesavan, J. Amidani, L. Mazzaro, R. Berardi, S. Caramori, S. Pasquini, L. Boscherini, F. Tags: X-ray absorption spectroscopy photoelectrochemistry photoanodes resonant inelastic X-ray scattering research papers Source Type: research
