Results 41 to 50 of about 14,554 (282)

Circular Dichroism Reflectance Anisotropy of Chiral Atomically Thin Films

Chemosensors
Recently, a technical modification of a Reflectance Anisotropy Spectroscopy (RAS) spectrometer has been proposed to investigate the circular dichroism (CD) of samples instead of the normally studied linear dichroism. CD-RAS measures the anisotropy of the
Ilaria Tomei, Filippo Pierucci, Beatrice Bonanni, Anna Sgarlata, Massimo Fanfoni, Seong-Jun Yang, Cheol-Joo Kim, Claudio Goletti   +7 more
doaj   +1 more source

Value of MRI Outcomes for Preventive and Early‐Stage Trials in Spinocerebellar Ataxias 1 and 3

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To examine the value of MRI outcomes as endpoints for preventive and early‐stage trials of two polyglutamine spinocerebellar ataxias (SCAs). Methods A cohort of 100 participants (23 SCA1, 63 SCA3, median Scale for the Assessment and Rating of Ataxia (SARA) score = 5, 42% preataxic, and 14 gene‐negative controls) was scanned at 3T up ...
Thiago J. R. Rezende, Emilien Petit, Young Woo Park, Sophie Tezenas du Montcel, James M. Joers, Jonathan M. DuBois, H. Moore Arnold, Michal Povazan, Ipek Özdemir, Guita Banan, Romain Valabregue, Philipp Ehses, Jennifer Faber, Chiadi U. Onyike, Peter B. Barker, Jeremy D. Schmahmann, Eva‐Maria Ratai, Sub H. Subramony, Thomas H. Mareci, Khalaf O. Bushara, Henry Paulson, Thomas Klockgether, Alexandra Durr, Tetsuo Ashizawa, Christophe Lenglet, Gülin Öz, READISCA Investigators   +26 more
wiley   +1 more source

Anisotropic optical response of the diamond (111)-2x1 surface

, 1995
The optical properties of the 2$\times$1 reconstruction of the diamond (111) surface are investigated. The electronic structure and optical properties of the surface are studied using a microscopic tight-binding approach.
A. I. Shkrebtii, A. Selloni, A. Selloni, A.G. Bagchi, A.R. Turner, B.B. Pate, B.B. Pate, B.N. Davidson, C. Kress, C. Noguez, C. Noguez, Cecilia Noguez, D. Vanderbilt, D.A. Drabold, D.A. Drabold, D.E. Aspnes, D.R. Alfonso, F. Ancilotto, F. Bassani, F. Manghi, F.G. Celii, F.J. Himpsel, G.B. Adams, G.D. Kubiak, H. Ibach, J.D. Jackson, J.D.E. McIntyre, J.E. Northrup, J.E. Northrup, J.F. Morar, J.M. Nicholls, K.C. Pandey, M. Roy, N. Takeuchi, O.F. Sankey, P. Chiaradia, P. Vogl, P.G. Lurie, Ph. Hofmann, R. Del Sole, R. Del Sole, R. Del Sole, R. Stumpf, R.I. Uhrberg, S. Iarlori, S.V. Pepper, S.V. Pepper, Sergio E. Ulloa, T. Yasuda, V.I. Gavrilenko, W.L. Mochán, W.L. Mochán, W.L. Mochán, W.L. Schaich, Y. Borensztein   +54 more
core   +1 more source

Dynamic Precipitation during High‐Pressure Torsion of a Magnesium–Manganese Alloy

Advanced Engineering Materials, EarlyView.
An ultrafine‐grained alloy is produced by high‐pressure torsion of solutionized Mg–1.35 wt% Mn. Precipitation of nanometer‐scale Mn particles during deformation provides pinning sites. This prevents the formation of a bimodal grain structure and results in a finer grain size than for pure Mg.
Julian M. Rosalie, Anton Hohenwarter
wiley   +1 more source

Basic Concepts and Interfacial Aspects of High-Efficiency III-V Multijunction Solar Cells

CHIMIA, 2007
Among various types of solar cells, MOVPE-grown triple-junction III-V compound semiconductors are today's most efficient photovoltaic devices with conversion efficiencies exceeding 40%.
B. Erol Sağol, Ulf Seidel, Nadine Szabó, Klaus Schwarzburg, Thomas Hannappel   +4 more
doaj   +1 more source

Ultrasensitive and fast single wavelength plasmonic hydrogen sensing with anisotropic nanostructured Pd films

, 2018
Anisotropic nanostructured porous Pd films are fabricated using oblique angle deposition in vacuum on a glass substrate. They display a dichroic response, due to localised surface plasmon resonances (LSPR) within the nanoparticles forming the film ...
Borensztein, Yves, Watkins, William L.
core   +2 more sources

Evaluation of the Potential of Laser Shock Peening Compared with Cold Expansion for Improving Fatigue Resistance of Riveted Lap Joints of Aerospace Grade 7175 Al Alloy

Advanced Engineering Materials, EarlyView.
This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar, David Osman Busse, Maximilian Sprengel, Domenico Furfari, Marc‐André Nielsen, Guilherme Abreu Faria, Jérémy Epp   +6 more
wiley   +1 more source

Single-Fiber Reflectance Spectroscopy of Isotropic-Scattering Medium: An Analytic Perspective to the Ratio-of-Remission in Steady-State Measurements

Photonics, 2014
Recent focused Monte Carlo and experimental studies on steady-state single-fiber reflectance spectroscopy (SfRS) from a biologically relevant scattering medium have revealed that, as the dimensionless reduced scattering of the medium increases, the SfRS ...
Daqing Piao, Joel W. Slaton
doaj   +1 more source

Ab initio optical properties of Si(100)

, 1999
We compute the linear optical properties of different reconstructions of the clean and hydrogenated Si(100) surface within DFT-LDA, using norm-conserving pseudopotentials. The equilibrium atomic geometries of the surfaces, determined from self-consistent
A. I. Shkrebtii, A. Ramstad, A. Shkrebtii, A.F. Starace, Bernardo S. Mendoza, C. Kress, D.M. Ceperley, E.G. Keim, F. Manghi, G. Bachelet, Giovanni Onida, H. Farrell, H. Shigekawa, J.E. Northrup, J.P. Perdew, L. Kipp, L. Kleinman, L.S. Johansson, L.S. Johansson, M. Kubots, Maurizia Palummo, O. Pulci, P. Hohenberg, P. Kruger, P.E. Wierenga, R. Del Sol, R. Del Sole, R. Del Sole, R. Shioda, R.J. Cole, Rodolfo Del Sole, S. G. Jaloviar, S. Goedecker, S. Goedecker, T. Tabata, T. Yasuda, T. Yokoyama, T. Yokoyama, V. I. Gavrilenko, W. Kohn, Y.J. Chabal   +40 more
core   +1 more source

Exploring Dipolar Dynamics and Ionic Transport in Metal‐Organic Frameworks: Experimental and Theoretical Insights

Advanced Functional Materials, EarlyView.
In this study, the interplay of dipolar dynamics and ionic charge transport in MOF compounds is investigated. Synthesizing the novel structure CFA‐25 with integrated freely rotating dipolar groups, local and macroscopic effects, including interactions with Cs cations are explored.
Ralph Freund, Arthur Schulz, Peter Lunkenheimer, Maryana Kraft, Thomas Bergler, Harald Oberhofer, Dirk Volkmer   +6 more
wiley   +1 more source