相关实验视频

Updated: May 6, 2026

Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature

Controlling Flow Speeds of Microtubule-Based 3D Active Fluids Using Temperature

Published on: November 26, 2019

基于液晶的温度控制的循环再循环平流系统

Marta L Murillo-Sánchez, Natalia Copete-Plazas, Elias Bürkle

The Review of scientific instruments

|October 7, 2024

概括

一种新的温度控制的循环直流平流系统使稳定液晶 (LC) 实验成为可能. 该系统通过每次激光脉冲使用新鲜液体体积来克服LC降解问题,确保精确的中相控制.

科学领域:

流体动力学流体动力学
材料科学材料科学材料科学
实验物理实验物理学

背景情况:

基于激光的液体实验可能会因局部加热而导致样品退化.
无基质液体处理对于高流量激光相互作用至关重要.
液晶 (LCs) 由于粘度,非牛顿行为和中相敏感性而存在独特的挑战.

研究的目的:

为液晶实验设计和实施一个温度控制的循环直流平流系统.
为了能够精确地控制温度和压力,在碰撞喷气设置中稳定的LC半相.
研究流体特性和系统参数对LC板的稳定性和尺寸的影响.

主要方法:

利用相撞的双喷气系统来创建液体的辐射膨胀.
实现了精确的温度和压力控制,以管理LC中位相和流量.
系统地改变喷嘴直径,撞击角度,辐射距离和流速以描述流体行为.

主要成果:

使用LCs证明了各种尺寸和厚度的稳定流体链.
量化了LC粘度和非牛顿行为对板厚相对于几何参数的影响.
显示流速主要决定生成的液体板的宽度和长度.

结论:

开发的温度控制的撞击喷气系统成功地适应了液晶的独特特性.
在这个实验设置中,精确控制温度和压力是保持稳定的LC中相的关键.
该系统为基于激光的液晶研究提供了一个强大的平台,克服了以前样品降解的局限性.

更多相关视频

Cryogenic Liquid Jets for High Repetition Rate Discovery Science

Cryogenic Liquid Jets for High Repetition Rate Discovery Science

Published on: May 9, 2020

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization

Published on: August 18, 2022

相关概念视频

Supercritical Fluid Chromatography

Supercritical Fluid Chromatography

Supercritical fluid chromatography (SFC) provides a beneficial substitute for gas chromatography (GC) and liquid chromatography (LC) for certain samples because it merges the top attributes of both techniques. SFC allows the separation and analysis of compounds that GC or LC does not easily manage. These compounds are traditionally nonvolatile or thermally unstable, making GC unsuitable and lacking functional groups required for HPLC analysis.
SFC utilizes a supercritical fluid mobile phase,...

Two Components: Liquid–Liquid Systems

Two Components: Liquid–Liquid Systems

A pressure-composition phase diagram explicitly describes the behavior of an ideal solution of two volatile liquids under varying pressures and compositions. A pressure-composition diagram has two main curves. The bubble point curve represents the plot of pressure versus liquid mole fraction. It indicates the pressure at which the first bubble of vapor forms from the liquid phase as the system pressure decreases.The dew point curve is the pressure versus vapor mole fraction. It indicates the...

Steady, Laminar Flow Between Parallel Plates

Steady, Laminar Flow Between Parallel Plates

Understanding steady, laminar flow between parallel plates is essential for analyzing and designing flow in narrow rectangular channels, commonly found in various water conveyance and drainage systems. The Navier-Stokes equations govern fluid motion and are generally challenging to solve due to their nonlinearity. However, simplifications are possible in certain cases, like the steady laminar flow between parallel plates. For this scenario, we assume steady, incompressible, laminar flow.

Steady, Laminar Flow in Circular Tubes

Steady, Laminar Flow in Circular Tubes

Hagen-Poiseuille flow describes a viscous fluid's steady, incompressible flow through a cylindrical tube with a constant radius R. This flow profile is often applied to understand fluid transport in narrow channels, such as capillaries. It serves as a foundational example of laminar flow. In this model, cylindrical coordinates (r,θ,z) are used to describe the radial (r), angular (θ), and axial (z) dimensions within the tube. For Hagen-Poiseuille flow, the velocity profile is purely...