Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Gas Chromatography: Types of Detectors-I01:21

Gas Chromatography: Types of Detectors-I

482
There are different types of detectors used in gas chromatography, each with its own specific properties that make it suitable for detecting certain types of analytes. The most commonly used detectors in GC are thermal conductivity detector (TCD), flame ionization detector (FID), and electron capture detector (ECD).
TCD is the earliest and most widely used detector that operates by measuring the changes in the thermal conductivity of the carrier gas. When a sample compound enters the detector,...
482
High-Performance Liquid Chromatography: Types of Detectors01:15

High-Performance Liquid Chromatography: Types of Detectors

624
The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte...
624

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Targeted activation of PPARG or AKT1 alleviates liver injury in mice with type 2 diabetes and sepsis by modulating inflammatory and metabolic pathways.

Annals of medicine·2026
Same author

Chronic intermittent hypobaric hypoxia ameliorates iron metabolism disorder through ferritinophagy in collagen-induced arthritis mice.

Journal of trace elements in medicine and biology : organ of the Society for Minerals and Trace Elements (GMS)·2026
Same author

Appropriate threshold setting and multiple methods combination may improve reproducibility of gene ontology enrichment analysis.

Biochemistry and biophysics reports·2026
Same author

When structure meets function: Unpacking the associations of social connections with health outcomes in a nationwide sample of Chinese adults.

Journal of health psychology·2026
Same author

Construction and validation of the risk assessment scale for deep vein thrombosis in high altitude plateau areas.

Frontiers in medicine·2026
Same author

High-Speed, Pixel-Super-resolved Compressive Second Near-Infrared Fluorescence In Vivo Imaging.

Research (Washington, D.C.)·2026

Related Experiment Video

Updated: Jul 23, 2025

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
10:33

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

8.5K

Recyclable Cholesteric Phase Liquid Crystal Device for Detecting Storage Temperature Failure.

Shiwen Yin1, Shimeng Ge1, Xiaoshuai Li2

  • 1Department of Applied Physics, Hebei University of Technology, Tianjin 300401, P. R. China.

ACS Applied Materials & Interfaces
|July 12, 2023
PubMed
Summary
This summary is machine-generated.

This study eliminates oily streak defects in cholesteric liquid crystals (CLCs) by controlling cooling rates after heating to the isotropic phase. This enables tunable optical properties for precision optics and temperature-sensitive material detection.

Keywords:
focal conic stateoily streak defectsplanar staterapid coolingslow cooling

More Related Videos

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.2K
High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
06:24

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

6.5K

Related Experiment Videos

Last Updated: Jul 23, 2025

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
10:33

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

8.5K
Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets
06:26

Orientational Transition in a Liquid Crystal Triggered by the Thermodynamic Growth of Interfacial Wetting Sheets

Published on: May 15, 2017

7.2K
High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal
06:24

High-Contrast and Fast Photorheological Switching of a Twist-Bend Nematic Liquid Crystal

Published on: October 31, 2019

6.5K

Area of Science:

  • Materials Science
  • Optics
  • Polymer Science

Background:

  • Cholesteric liquid crystals (CLCs) often display oily streak defects, degrading optical performance in precision applications.
  • These defects negatively affect light transmission and selective reflection properties.

Purpose of the Study:

  • To investigate methods for eliminating oily streak defects in CLCs.
  • To explore the influence of polymerizable monomers, polymerization intensity, and chiral dopant concentration on defect formation.
  • To develop a technique for achieving stable planar and focal conic states in CLCs.

Main Methods:

  • Incorporation of polymerizable monomers into CLCs.
  • Systematic variation of monomer concentration, polymerization light intensity, and chiral dopant concentration.
  • Thermal treatment involving heating to the isotropic phase followed by controlled cooling (rapid and slow).

Main Results:

  • Oily streak defects in CLCs were successfully eliminated using a rapid cooling method from the isotropic phase.
  • A stable focal conic state was achieved through a slow cooling process.
  • Two distinct stable optical states were obtained by varying cooling rates, enabling temperature-sensitive detection.

Conclusions:

  • A novel method for defect-free CLC planar states was demonstrated, crucial for advanced optical devices.
  • The cooling rate control offers a pathway to tunable optical properties in CLCs.
  • This technique provides a basis for developing reliable temperature-sensitive detection devices.