Results 11 to 20 of about 572 (136)

Spectroscopic Signatures of Structural Disorder and Electron-Phonon Interactions in Trigonal Selenium Thin Films for Solar Energy Harvesting. [PDF]

Small Methods
Selenium plays hard to get ‐ volatile, low radiative efficiency, and highly sensitive to processing. Using a closed‐space encapsulation strategy, we probe room‐temperature photoluminescence and quantify structural disorder, showing how precise structural control can turn selenium into a high‐performance optoelectronic material of tomorrow.
Nielsen RS, Medaille AG, Torrens A, Segura-Blanch O, Kavanagh SR, Scanlon DO, Walsh A, Saucedo E, Placidi M, Dimitrievska M.   +9 more
europepmc   +2 more sources

The impact of acute and chronic stress on gastrointestinal physiology and function: a microbiota–gut–brain axis perspective

The Journal of Physiology, Volume 601, Issue 20, Page 4491-4538, 15 October 2023., 2023
Abstract figure legend Acute and chronic stress exert wide‐ranging effects across the gut–brain axis. In the case of acute stress, the enteric nervous system may be activated and gut contractility modified. This is associated with altered serotonin metabolism in the gastrointestinal tract as well as activation of the innate immune system and ...
Sarah‐Jane Leigh, Friederike Uhlig, Lars Wilmes, Paula Sanchez‐Diaz, Cassandra E. Gheorghe, Michael S. Goodson, Nancy Kelley‐Loughnane, Niall P. Hyland, John F. Cryan, Gerard Clarke   +9 more
wiley   +1 more source

Electrical Behavior of Vertical Pt/Au Schottky Diodes on GaN Homoepitaxy

physica status solidi (a), Volume 220, Issue 16, August 2023., 2023
I–V characteristics investigation in the function of temperature shows barrier height inhomogeneities for vertical GaN Schottky diodes. These inhomogeneities are a common and crucial issue for power device application. Their potential origin (strain, doping variation, electrically active defects) is studied using Raman spectroscopy and deep‐level ...
Maroun Dagher, Camille Sonneville, Georges Brémond, Dominique Planson, Eric Frayssinet, Yvon Cordier, Helge Haas, Mohammed Reda Iretki, Julien Buckley, Vishwajeet Maurya, Matthew Charles, Jean-Marie Bluet   +11 more
wiley   +1 more source

Halide Perovskites and Their Derivatives for Efficient, High-Resolution Direct Radiation Detection: Design Strategies and Applications. [PDF]

Adv Mater
Lead‐halide perovskites, and their bismuth‐based derivatives, have given rise to X‐ray detectors that perform orders of magnitude better than incumbent technologies. Herein, the principles behind these rapid improvements in performance are discussed, along with the challenges for the commercialization of these new technologies, and their wider impact ...
Dudipala KR, Le TH, Nie W, Hoye RLZ.
europepmc   +2 more sources

Asymmetric Ionospheric Fluctuations Over the Circum‐Pacific Regions Following the January 2022 Tonga Volcanic Eruption

Space Weather, Volume 21, Issue 8, August 2023., 2023
Abstract The Hunga Tonga‐Hunga Ha'apai volcanic eruption on 15 January 2022 had a significant impact on the ionosphere‐thermosphere system, resulting in large‐scale ionospheric irregularities with longitudinal and latitudinal asymmetries. Multiple instruments recorded these irregularities, indicating the propagation of a westward wave at an average ...
Wang Li, Haoze Zhu, Jiandi Feng, Xuequn Wu, Jun Tang, Zhen Zhang, Junyu Chen   +6 more
wiley   +1 more source

Healthy preterm newborns: Altered innate immunity and impaired monocyte function

European Journal of Immunology, Volume 53, Issue 5, May 2023., 2023
By investigating innate immune features, we observe notable disparities in proportions and functional capabilities of monocytes between preterm and full‐term infants. Preterm infants present a restricted ability to trigger pro‐inflammatory immune responses.
Sara De Biasi, Anita Neroni, Milena Nasi, Domenico Lo Tartaro, Rebecca Borella, Lara Gibellini, Laura Lucaccioni, Emma Bertucci, Licia Lugli, Francesca Miselli, Luca Bedetti, Isabella Neri, Fabrizio Ferrari, Fabio Facchinetti, Alberto Berardi, Andrea Cossarizza   +15 more
wiley   +1 more source

Visual Localization of an Internal Inspection Robot for the Oil‐Immersed Transformer

Journal of Robotics, Volume 2023, Issue 1, 2023., 2023
Aiming at the problem that the robot is difficult to locate in the oil‐immersed transformer, a visual positioning of the robot is proposed for internal inspection. First, in order to solve the problem of blur, distortion, and low contrast of the image obtained by the camera in the deteriorated and discolored transformer oil, an image enhancement ...
Yingbin Feng, Yahui Kou, Yanju Liu, Afaque Manzoor Soomro   +3 more
wiley   +1 more source

Theory of positrons in solids and on solid surfaces [PDF]

, 1994
Various experimental methods based on positron annihilation have evolved into important tools for researching the structure and properties of condensed matter.
Nieminen, Risto M., Puska, Martti J.
core   +1 more source

Comprehensive defect suppression in perovskite nanocrystals for high-efficiency light-emitting diodes [PDF]

, 2021
Electroluminescence efficiencies of metal halide perovskite nanocrystals (PNCs) are limited by a lack of material strategies that can both suppress the formation of defects and enhance the charge carrier confinement.
Bolink, Henk, Friend, R. H., Hu, B., Hyeon Jo, S., Kakekhani, A., Kim, D. H., Kim, S., Kim, Y. H., Kim, Y. W., Lee, T.W., Lee, Y. H., Martínez Sarti, Laura, Nagane, S., Park, G. S., Park, J., Park, J., Rappe, A. M., Sadhanala, A., Tan, P., Wexler, R. B., Xu, H., Yoo, S.   +21 more
core   +1 more source

水素パッシベーションによるBaSi2の分光感度向上とμSRによる水素状態の探索 [PDF]

, 2021
筑波大学University of Tsukuba博士（工学）Doctor of Philosophy in Engineering2020doctoral ...
Xu, Zhihao
core   +1 more source