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A model for magnetoresistance in positionally disordered organic materials is presented and solved using percolation theory. The model describes the effects of spin flips on hopping transport by considering the effect of spin dynamics on an…

无序系统与神经网络 · 物理学 2012-05-02 N. J. Harmon , M. E. Flatté

A small fraction of all quasars are strongly lensed and multiply imaged, with usually a galaxy acting as the main lens. Some, maybe all of these quasars are also affected by microlensing, the effects of stellar mass objects in the lensing…

天体物理学 · 物理学 2009-11-10 Marie Treyer , Joachim Wambsganss

Proteins can exhibit dynamic structural flexibility as they carry out their functions, especially in binding regions that interact with other molecules. For the key SARS-CoV-2 spike protein that facilitates COVID-19 infection, studies have…

应用统计 · 统计学 2022-02-08 Samuel W. K. Wong

We report on experimental investigation of potential high-performance cavity length stabilization using odd-indexed higher-order spatial modes. Schemes based on higher-order modes are particularly useful for micro-cavities that are used for…

Cells rely on focal adhesions (FAs) to carry out a variety of important tasks, including motion, environmental sensing, and adhesion to the extracellular matrix. Although attaining a fundamental characterization of FAs is a compelling goal,…

We have performed systemmatic local linear stability analysis on a radially stratified infinite self-gravitating cylinder of rotating plasma under the influence of magnetic field. In order to render the system analytically tractable, we…

星系天体物理 · 物理学 2016-10-26 Shubhadeep Sadhukhan , Surajit Mondal , Sagar Chakraborty

We demonstrate orientation-sensitive multimodal nonlinear optical polarizing microscopy capable of probing orientational, polar, and biaxial features of mesomorphic ordering in soft matter. This technique achieves simultaneous imaging in…

软凝聚态物质 · 物理学 2015-05-19 Taewoo Lee , Rahul P. Trivedi , Ivan I. Smalyukh

We investigate the impact of instrumental systematic errors on the potential of cosmic microwave background polarization experiments targeting primordial B-modes. To do so, we introduce spin-weighted Muller matrix-valued fields describing…

天体物理学 · 物理学 2008-11-26 Daniel O'Dea , Anthony Challinor , Bradley R. Johnson

Deposition of giant microplastic particles from the atmosphere has been observed in the most remote places on Earth. However, their deposition patterns are difficult to reproduce using current atmospheric transport models. These models…

We present a new numerical model to simulate settling trajectories of discretized individual or a mixture of particles of different geometrical shapes in a quiescent fluid and their flow trajectories in a flowing fluid. Simulations unveiled…

计算物理 · 物理学 2020-06-26 Hakan Başağaoğlu , Sauro Succi , Danielle Wyrick , Justin Blount

Resonant (elastic) soft x-ray scattering (RSXS) offers a unique element, site, and valence specific probe to study spatial modulations of charge, spin, and orbital degrees of freedom in solids on the nanoscopic length scale. It cannot only…

材料科学 · 物理学 2013-04-12 J. Fink , E. Schierle , E. Weschke , J. Geck

We image simultaneously the geometric, electronic and magnetic structure of a buckled iron bilayer film that exhibits chiral magnetic order. We achieve this by combining spin-polarized scanning tunneling microscopy and magnetic exchange…

Wavefront shaping has revolutionized imaging deep in scattering media, being able to spatially and temporally refocus light through or inside the medium. However, wavefront shaping is not compatible yet with polarization-resolved microscopy…

光学 · 物理学 2018-11-26 Hilton B. de Aguiar , Sylvain Gigan , Sophie Brasselet

For two decades now, the importance of microstructure in the mechanical behaviour of a large collection of grains has been a topic of intense research. Many approaches have been developed to study the microstructure in granular materials,…

软凝聚态物质 · 物理学 2020-03-06 K. P. Krishnaraj

Surface-enhanced coherent anti-Stokes Raman scattering (SE-CARS) takes advantage of surface plasmon resonances supported on metallic nanostructures to amplify the coherent Raman response of target molecules. While these metallic antennas…

光学 · 物理学 2022-09-07 Shamsul Abedin , Yong Li , Abid Anjum Sifat , Khokan Roy , Eric Olaf Potma

Stacking order in bilayers of transition metal dichalcogenides (TMDs) controls structural symmetry and layer-to-layer interactions, offering a direct route to tune their electronic properties and enable optoelectronic applications. The work…

介观与纳米尺度物理 · 物理学 2026-04-14 Anagha Gopinath , Faiha Mujeeb , Subhabrata Dhar , Jyoti Mohanty

We study the effect of magnetic scattering on transport in a system with strong structural disorder, using exact finite size calculation of the low frequency optical conductivity. At weak electron-spin coupling spin disorder leads to a…

无序系统与神经网络 · 物理学 2009-11-10 Sanjeev Kumar , Pinaki Majumdar

Super-resolution mapping of the 3D orientation of fluorophores reveals the alignment of biological structures where the fluorophores are tightly attached, and thus plays a vital role in studying the organization and dynamics of…

光学 · 物理学 2024-01-23 Xiaowei Liu , Mingwei Tang , Ning Zhou , Chenlei Pang , Zhong Wen , Xu Liu , Qing Yang

We apply coherent anti-Stokes Raman Scattering (CARS) microscopy to characterize director structures in liquid crystals.

软凝聚态物质 · 物理学 2016-09-08 A. V. Kachynski , A. N. Kuzmin , P. N. Prasad , I. I. Smalyukh

The experimental demonstration and characterization is made of the plasmon-mediated resonant transmission through an embedded undulated continuous thin metal film under normal incidence. 1D undulations are shown to enable a spatially…