Results 61 to 70 of about 21,490 (217)

Re-entrant Layer-by-Layer Etching of GaAs(001)

, 1995
We report the first observation of re-entrant layer-by-layer etching based on {\it in situ\/} reflection high-energy electron-diffraction measurements. With AsBr$_3$ used to etch GaAs(001), sustained specular-beam intensity oscillations are seen at high ...
B. A. Joyce, B. Poelsema, B. Poelsema, D. D. Vvedensky, E. Chason, H.-J. Ernst, J. Villain, J. Zhang, P. Bedrossian, P. Bedrossian, P. Bedrossian, P. Šmilauer, P. Šmilauer, P. Šmilauer, P. Šmilauer, P. Šmilauer, R. Kunkel, T. Kaneko, T. Kawamura, T. Michely, T. Michely, T. Michely, T. Ohno, T. Shitara, W. T. Tsang, W. T. Tsang   +25 more
core   +1 more source

Study of interface asymmetry in InAs–GaSb heterojunctions [PDF]

, 1995
We present reflection high energy electron diffraction, secondary ion mass spectroscopy, scanning tunneling microscopy and x‐ray photoelectron spectroscopy studies of the abruptness of InAs–GaSb interfaces.
Collins, D. A., Feenstra, R. M., Grant, R. W., McGill, T. C., Wang, M. W.   +4 more
core   +1 more source

High Light Utilization and Color Rendering in Vacuum‐Deposited Semitransparent Perovskite Solar Cells

Advanced Materials, EarlyView.
In this work, low bandgap (≈1.55 eV) semitransparent perovskite solar cells (ST‐PSCs) having thin (thickness < ≈100 nm) perovskite layers and transparent conductive oxide‐based rear electrodes are fabricated using vacuum‐deposition methods. Two different ST‐PSCs demonstrated a high light utilization efficiency value of 4.2 (PCE: 9.26% and AVT: 45.3 ...
Abhyuday Paliwal, Manuel Romero, Lennart van den Hengel, Nathan Rodkey, Kassio P. S. Zanoni, Gabriel Lozano, Cristina Roldán‐Carmona, Michele Sessolo, Hernán Míguez, Henk J. Bolink   +9 more
wiley   +1 more source

Cell-by-cell alignment of repeated specular microscopy images from the same eye.

PLoS ONE, 2013
PurposeModern specular microscopes (SM) robustly depict the same central area of the corneal endothelium at different time points through a built-in fixation light.
Daniel Böhringer, Stefan Lang, Thomas Reinhard   +2 more
doaj   +1 more source

Josephson (001) tilt grain boundary junctions of high temperature superconductors

, 2005
We calculate the critical current $I_c$ across in-plane (001) tilt grain boundary junctions of high temperature superconductors. We solve for the electronic states corresponding to the electron-doped cuprates, two slightly different hole-doped cuprates ...
G. B. Arnold, Gim Y, Gim Yonggyu, Huang J, Mathai A, R. A. Klemm   +5 more
core   +1 more source

Hydrogel Thermostat Inspired by Photoprotective Foliage Using Latent and Radiative Heat Control

Advanced Materials, EarlyView.
Guided by Populus alba foliage, this hydrogel latent‐radiative thermostat (LRT) actively balances latent and radiative heat fluxes. An LRT switches solar reflectance, maintains high mid‐IR emissivity, and reversibly evaporates/regenerates water, while titanium oxide (TiO2) nanoparticles toughen the film.
Se‐Yeon Heo, Hyung Rae Kim, Yoonsoo Shin, Hyun Su Lee, Hyunkyu Kwak, Do Hyeon Kim, Dong Hyun Seo, Joo Hwan Ko, Hyo Eun Jeong, Sehui Chang, Min Seok Kim, Longnan Li, Jyotirmoy Mandal, Wei Li, Dae‐Hyeong Kim, Young Min Song   +15 more
wiley   +1 more source

Assessment of Anterior Segment Parameters and Specular Microscopy Findings in Patients with COPD

Erciyes Medical Journal, 2020
Objective: The aim of the present study was to assess the anterior segment parameters of patients with chronic obstructive pulmonary disease (COPD) by corneal specular microscopy and biometry and to compare the results with healthy controls.
Nurdan Gamze Taşlı, Hasan Ölmez, Adem Uğurlu, Turgay Uçak, Erel İçel, Yücel Karakurt, Hayati Yılmaz   +6 more
doaj   +1 more source

Light scattering from self-affine fractal silver surfaces with nanoscale cutoff: Far-field and near-field calculations

, 2001
We study the light scattered from randomly rough, one-dimensional self-affine fractal silver surfaces with nanoscale lower cutoff, illuminated by s- or p-polarized Gaussian beams a few microns wide.
Berry, Bozhevolnyi, Bozhevolnyi, Bozhevolnyi, Carminati, Chen, Devaux, Eugenio R. Méndez, Franceschetti, Greffet, Grésillon, Jaggard, Jaggard, Jakeman, José A. Sánchez-Gil, José V. Garcı́a-Ramos, Jullien, Kneipp, Leyva-Lucero, Lin, Maradudin, Markel, McSharry, Mendoza-Suárez, Nie, O’Donnell, Poliakov, Poliakov, Savaidis, Savaidis, Shalaev, Sheppard, Simonsen, Simonsen, Simonsen, Sinha, Sánchez-Gil, Sánchez-Gil, Sánchez-Gil, Sánchez-Gil, Sánchez-Gil, Sánchez-Gil, Sánchez-Gil, Tsai, Voss, West, Xu, Yang, Zhang, Zhao   +49 more
core   +1 more source

Ultrasound in Women's Health: Mechanisms, Applications, and Emerging Opportunities

Advanced Materials, EarlyView.
As healthcare moves toward decentralization, ultrasound technologies are evolving from strictly imaging tools in clinical settings into versatile diagnostic and therapeutic platforms, with growing roles addressing women's health needs. This review highlights how ultrasound's underlying physical mechanisms can be harnessed to reduce disparities in women'
Sarah B. Ornellas, Bilal Kizilaslan, Aastha Shah, Jason F. Hou, Yoonsoo Shin, Alejandra Hernandez Moyers, Claudia Lozano, Canan Dagdeviren   +7 more
wiley   +1 more source

Versatile Control of Spectral Emissivity in Mid‐Infrared Metasurfaces via Silicon Microstructuring

Advanced Optical Materials, EarlyView.
A family of metasurfaces is obtained very simply, solely through the structuration of a single‐crystal silicon surface, without any other material involved. Based on the infrared plasmonic behavior of highly doped silicon, further control of surface topography by micro‐ and nano‐structuration is found to enable an avenue of options toward tailoring its
Kirollos Ernest Matta, Elyes Nefzaoui, Ahmed A. Elsayed, Armande Hervé, Martine Gnambodoe‐CapoChichi, Frédéric Marty, Mazen Erfan, Yasser M. Sabry, Abdelkrim Khelif, Tarik Bourouina   +9 more
wiley   +1 more source