相关实验视频

Updated: Jan 15, 2026

Using Neutron Spin Echo Resolved Grazing Incidence Scattering to Investigate Organic Solar Cell Materials

Using Neutron Spin Echo Resolved Grazing Incidence Scattering to Investigate Organic Solar Cell Materials

Published on: January 15, 2014

控制的角相关性和极化斑点在分散的双断膜中

Nikita Choudhary¹, Deependra Singh Gaur¹, Diksha Sharma¹

¹Department of Physics, Indian Institute of Technology Roorkee, Roorkee, Uttarakhand, 247667, India.

Scientific reports

|October 14, 2025

概括

我们研究了不同分子对齐的液晶弹性体 (LCE) 薄膜如何影响极化斑点. 对齐的LCE片保留了极化信息,使得散射介质中的图像得到了增强.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
软物质物理学软物质物理学

背景情况:

极化斑点是由复杂介质中的光散射引起的.
液晶弹性体 (LCE) 由于分子对齐而表现出可调节的光学特性.
了解异质介质中的光物质相互作用对于先进的光学应用至关重要.

研究的目的:

在液晶弹性体 (LCE) 薄膜中实验和理论研究极化斑点的产生.
阐明分子对齐和双折在调节斑点图案中的作用.
探索LCE膜在成像和传感方面的潜在应用.

主要方法:

制造具有随机和单轴对齐分子分布的LCE膜.
极化光学显微镜和交叉极化器测量以确认光学异质性.
用交叉相关性,空间强度相关性和极化程度 (DOP) 计算分析极化解决的斑点图案.
空间连贯度和香农的量化.
对角记忆效应的研究.

主要成果:

对齐的LCE膜保留了部分偏振信息,导致偏振依赖的斑点相关性.
随机的LCE片完全混着极化,产生极化斑点.
分子对齐显著影响斑点图案的统计性质 (连贯性,).
对齐的LCE膜由于其异构结构而表现出扩展角度记忆效应.

结论:

在LCE膜中的分子对齐决定了产生的斑点的极化特征.
不同类型的LCE膜为增强成像分辨率提供了对角记忆效应的动态控制.
这项研究为了解双断层介质中的斑点生成提供了一个框架,对生物医学成像,传感和斑点操纵有意义.

更多相关视频

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

Published on: March 2, 2021

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Fabrication Procedures and Birefringence Measurements for Designing Magnetically Responsive Lanthanide Ion Chelating Phospholipid Assemblies

Published on: January 3, 2018

相关概念视频

$Interference and Diffraction$ 02:18

Interference and Diffraction

Interference is a characteristic phenomenon exhibited by waves. When two electromagnetic waves interact with their peaks and troughs coinciding, a resulting wave with enhanced amplitude is produced. This is known as constructive interference. In this case, the two waves interacting are in phase with each other.

X-ray Crystallography

X-ray Crystallography

The size of the unit cell and the arrangement of atoms in a crystal may be determined from measurements of the diffraction of X-rays by the crystal, termed X-ray crystallography.
Diffraction
Diffraction is the change in the direction of travel experienced by an electromagnetic wave when it encounters a physical barrier whose dimensions are comparable to those of the wavelength of the light. X-rays are electromagnetic radiation with wavelengths about as long as the distance between neighboring...

Phase Contrast and Differential Interference Contrast Microscopy

Phase Contrast and Differential Interference Contrast Microscopy

Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...