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

UV–Vis Spectroscopy: Woodward–Fieser Rules01:29

UV–Vis Spectroscopy: Woodward–Fieser Rules

UV–Visible absorption spectra of conjugated dienes arise from the lowest energy π → π* transitions. The light-absorbing part of the molecule is called the chromophore, and the substituents directly attached to the chromophore are called auxochromes. A strong correlation exists between the absorption maxima, λmax, and the structure of a conjugated π system. The Woodward–Fieser rules predict the value of λmax for a given structure by adding the contributions...

You might also read

Related Articles

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

Sort by
Same author

Strabismus and amblyopia disrupt spatial perception but not the fidelity of cortical maps in human primary visual cortex.

Vision research·2025
Same author

The dynamics of genome size and GC contents evolution in genus Nicotiana.

Brazilian journal of biology = Revista brasleira de biologia·2021
Same author

Impact of nitrogen and phosphorus fertilizers on Cry1Ac protein contents in transgenic cotton.

Brazilian journal of biology = Revista brasleira de biologia·2021
Same author

Optimized biotransformation of acid-treated water melon peel hydrolyzate into ethanol.

Brazilian journal of biology = Revista brasleira de biologia·2021
Same author

Use of multi-strain probiotics in linseed meal based diet for Labeo rohita fingerlings.

Brazilian journal of biology = Revista brasleira de biologia·2021
Same author

Physicochemical features, functional characteristics, and health benefits of cottonseed oil: a review.

Brazilian journal of biology = Revista brasleira de biologia·2021

Related Experiment Video

Updated: Jul 6, 2026

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films
09:32

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films

Published on: January 26, 2016

Vacuum temperature-dependent ellipsometric studies on WO3 thin films.

Z Hussain1

  • 1Department of Electrical and Electronic Engineering, Imperial College of Science, Technology and Medicine, Exhibition Road, London SW7 2BT United Kingdom. zhussain@dircon.co.uk

Applied Optics
|March 8, 2008
PubMed
Summary

Ellipsometry reveals temperature-dependent changes in tungsten oxide (WO(3)) thin films, linking structural shifts to electrochromic properties for technological use. Polaronic excitations explain behavior above room temperature, while polaronic and bipolaronic transitions are key at lower temperatures.

More Related Videos

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
11:10

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Published on: May 23, 2018

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
09:41

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Published on: May 29, 2018

Related Experiment Videos

Last Updated: Jul 6, 2026

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films
09:32

Cooling Rate Dependent Ellipsometry Measurements to Determine the Dynamics of Thin Glassy Films

Published on: January 26, 2016

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
11:10

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model

Published on: May 23, 2018

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides
09:41

Bulk and Thin Film Synthesis of Compositionally Variant Entropy-stabilized Oxides

Published on: May 29, 2018

Area of Science:

  • Materials Science
  • Solid State Physics
  • Optoelectronics

Background:

  • Tungsten oxide (WO(3)) thin films exhibit electrochromic properties, crucial for optical devices.
  • Understanding temperature-dependent optical characteristics is vital for WO(3) applications.

Purpose of the Study:

  • To investigate the temperature-dependent optical properties of WO(3) thin films using ellipsometry.
  • To correlate observed changes with electrochromic characteristics and structural modifications.
  • To elucidate the electronic transitions responsible for optical behavior across a wide temperature range.

Main Methods:

  • Vacuum temperature-dependent spectroscopic ellipsometry at a fixed wavelength (0.633 microm).
  • Measurements conducted in an optical cryostat from 100 K to 453 K.
  • Analysis of refractive index (n) and extinction coefficient (k) variations with temperature.

Main Results:

  • Observed temperature-dependent drifts in refractive index (n) and extinction coefficient (k).
  • Correlated optical changes with reduction-oxidation processes and structural alterations in WO(3).
  • Proposed polaronic and bipolaronic excitations to explain temperature-dependent optical phenomena.

Conclusions:

  • Temperature significantly influences the electrochromic and structural properties of WO(3) thin films.
  • Polaronic excitations are identified as a key mechanism for optical modulation above room temperature.
  • Both polaronic and bipolaronic transitions are essential for understanding low-temperature optical behavior, informing technological applications.