Hall effect measurements using low ac magnetic fields and lock-in technique on field effect transistors with molybdenum disulfide channels
Publication date: Available online 22 October 2019Source: Physics Letters AAuthor(s): Yoshihiro Shimazu, Tatsuya Iwabuchi, Kensuke Arai, Inoru ShioyaAbstractHall effect measurements conventionally rely on the use of dc magnetic fields. For electronic devices made of ultrathin semiconducting materials, such as molybdenum disulfide (MoS2), the dc Hall effect measurements have practical difficulties. Here, we report the results of the Hall effect measurements using ac magnetic fields and a lock-in detection of the Hall voltage for field effect transistors with ultrathin MoS2 channels. The ac Hall effect measurements have some advantages over the dc measurements. The carrier concentration and the Hall mobility were estimated as a function of gate voltage from the results of the ac Hall effect measurements. They used a magnetic field strength that was lower by two orders of magnitude than those used in prior studies on MoS2 devices, which relied on dc magnetic fields.
DiscussionMCI prevalence varied among Hispanic/Latino backgrounds, but not as widely as reported in the previous studies. CVD risk and depressive symptoms were associated with increased MCI, whereas APOE4 was not, suggesting alternative etiologies for MCI among diverse Hispanics/Latinos. Our findings suggest that mitigating CVD risk factors may offer important pathways to understanding and reducing MCI and possibly dementia among diverse Hispanics/Latinos.
CONCLUSIONS: Local application of sevoflurane in the wound bed appears to exhibit analgesic, antimicrobial, and positive healing effects. It could be a promising alternative treatment to be included as a therapeutic option for wound care. PMID: 31730517 [PubMed - in process]
CONCLUSIONS: Cutaneous vasculopathy related to the skin, such as livedo reticularis and ulcers of torpid evolution due to cutaneous vasculopathy are extremely rare. Thus, it is necessary to include skin ulcers as one of the phenotypic manifestations of NF-1. PMID: 31730516 [PubMed - in process]
CONCLUSIONS: The authors suggest stasis mucinosis and OALM represent the spectrum of euthyroid mucin depositional disease in varying clinical settings. PMID: 31730515 [PubMed - in process]
CONCLUSIONS: From this case report, the authors believe NPWTi-d may be more effective in cases with intractable ulcers associated with infection that need better granulation. PMID: 31730514 [PubMed - in process]
Authors: Roshangar L, Soleimani Rad J, Kheirjou R, Reza Ranjkesh M, Ferdowsi Khosroshahi A Abstract Burn wounds are one of the main causes of skin damage. Based on World Health Organization statistics, almost 300 000 people worldwide die of burns each year. In severe burns, the cells and blood vessels are often injured and the blood supply to the wound is disturbed. Many factors such as oxygenation, infection, aging, hormones, and nutrition potentially can influence burn progression and disrupt repair with unbalanced release of various growth factors and cytokines. Different treatment approaches such as dressings a...
CONCLUSIONS: An illustrated guide for dressing application in burn wounds was developed and validated for content by an expert panel. PMID: 31730512 [PubMed - as supplied by publisher]
CONCLUSIONS: This is the largest cohort reported in the literature of patients with frostbite injuries treated with HBOT. Hyperbaric oxygen therapy may show positive impact on the demarcation level of frostbite and, despite the common side effects, it generally causes no long-term sequelae. PMID: 31730511 [PubMed - as supplied by publisher]
CONCLUSIONS: This is an easily reproducible and safe technique for effluent control in patients with Björk grade 4 abdomen with established EAF. PMID: 31730510 [PubMed - as supplied by publisher]
CONCLUSIONS: These results suggest the importance of arterial-arterial connections such as the pedal arch to the healing potential of foot and ankle wounds after STSG in this high-risk patient population. PMID: 31730509 [PubMed - as supplied by publisher]