Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

π Electron Effects on Chemical Shift: Overview

π Electron Effects on Chemical Shift: Overview

An applied magnetic field causes loosely bound π-electrons in organic molecules to circulate, producing a local or induced diamagnetic field over a large spatial volume. As the molecules tumble in solution, the field generated by π-electrons in spherical substituents results in a zero net field. However, the net field generated by π-electrons in non-spherical substituents is not zero. The effect of this induced field depends on the orientation of the molecule with respect to B0,...

IR Absorption Frequency: Hybridization

IR Absorption Frequency: Hybridization

Hydrocarbons such as alkanes, alkenes, and alkynes show characteristic C–H stretching absorption bands. These IR stretching frequencies depend on the hybridization of the involved carbon atom and can be explained in terms of the s character of each hybridized atomic orbital.
Among the sp, sp2, and sp3 hybridized orbitals, sp orbitals have the maximum s character (50%). Consequently, the electrons are held more closely to the nucleus, resulting in stronger and shorter C–H bonds that...

You might also read

Related Articles

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

Sort by

Same author

Magneto alignment of Ni<sub>0.5</sub>Co<sub>0.5</sub>Fe<sub>2</sub>O<sub>4</sub>@graphene flakes for highly efficient low-frequency microwave absorption.

Nanotechnology·2026

Same author

Substrate-dependent interfacial structures of ultrathin poly(methyl methacrylate) films upon annealing revealed by sum frequency generation vibrational spectroscopy.

Soft matter·2026

Same author

Ultrasound-activated MoS₂@Fe₃O₄ nanoplatform orchestrates biofilm disruption and immune reprogramming in implant-associated infections.

Journal of nanobiotechnology·2026

Same author

Evaluation of GSMaP and MSWEP precipitation products for runoff simulation in the Lhasa River Basin.

PloS one·2026

Same author

The RPA-binding domain and the KKRK motif in Rad26ATRIP cooperate at the perturbed DNA replication fork for initiating checkpoint signalling.

PLoS genetics·2026

Same author

Dimensionality-Controlled Magneto-Alignment of Biocarbon toward Superior Microwave Absorption.

ACS applied materials & interfaces·2026

Same journal

Ti/Sr Gradient Doping with SrTiO<sub>3</sub> Coating for Mitigating Strain and Oxygen Loss in Ni-Rich Cathode.

ACS applied materials & interfaces·2026

Same journal

Metallic Lead to Perfect Perovskite: A Bottom-Up Vapor-Assisted Colloidal Strategy for High-Performance Solar Cells.

ACS applied materials & interfaces·2026

Same journal

Two-Dimensional VSe<sub>2</sub>@Polypyrrole Heterostructure Enables Stable High-Rate Lithium-Sulfur Batteries.

ACS applied materials & interfaces·2026

Same journal

A Multifunctional Hydrogel Integrating Hemostatic, Antioxidant, and Antibacterial Properties for Infected and Diabetic Wound Regeneration.

ACS applied materials & interfaces·2026

Same journal

Tunable Interfacial to Filamentary Resistive Switching Mechanism in Room-Temperature-Grown Amorphous YBa<sub>2</sub>Cu<sub>3</sub>O<sub><i>x</i></sub> with Excess Cu Addition.

ACS applied materials & interfaces·2026

Same journal

Bioinspired Rhombic VO<sub>2</sub> Metasurface with Low Solar Absorptance for Self-adaptive All-Weather Building Thermal Management.

ACS applied materials & interfaces·2026

See all related articles

Search research articles

Related Experiment Video

Updated: Sep 21, 2025

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

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

Published on: May 23, 2018

Active and Smart Terahertz Electro-Optic Modulator Based on VO₂ Structure.

Zhuang Ren^1,2, Jinyi Xu³, Jinming Liu³

¹Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, HFIPS, Anhui, Chinese Academy of Sciences, Hefei 230031, P. R. China.

ACS Applied Materials & Interfaces

|June 2, 2022

Summary

This summary is machine-generated.

Researchers developed an active terahertz (THz) modulator using vanadium dioxide (VO2). This device enables efficient modulation of THz waves, achieving 99.9% modulation depth and smart control for advanced THz applications.

Keywords:

THz modulation VO2 thin film antireflection electro-optic modulation smart control

More Related Videos

Characterization of Anisotropic Leaky Mode Modulators for Holovideo

Characterization of Anisotropic Leaky Mode Modulators for Holovideo

Published on: March 19, 2016

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

Published on: May 13, 2020

Related Experiment Videos

Last Updated: Sep 21, 2025

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

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

Published on: May 23, 2018

Characterization of Anisotropic Leaky Mode Modulators for Holovideo

Characterization of Anisotropic Leaky Mode Modulators for Holovideo

Published on: March 19, 2016

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

In Situ Transmission Electron Microscopy with Biasing and Fabrication of Asymmetric Crossbars Based on Mixed-Phased a-VOx

Published on: May 13, 2020

Area of Science:

Condensed Matter Physics
Materials Science
Optics and Photonics

Background:

Active modulation of terahertz (THz) waves is crucial for developing advanced spectroscopic devices.
External field control of THz wave properties like transmission, reflection, and phase is highly sought after.

Purpose of the Study:

To demonstrate an active and smart electro-optic THz modulator.
To utilize vanadium dioxide (VO2), a strongly correlated electron oxide, for THz modulation.
To achieve efficient and precise control over THz wave characteristics.

Main Methods:

Fabrication of a vanadium dioxide (VO2) thin film.
Excitation of the VO2 thin film with milliampere current.
Implementation of a "THz-electro-THz" feedback loop for smart control.

Main Results:

Efficient modulation of THz wave transmission, reflection, and absorption.
Achieved 99.9% modulation depth with 180° phase switching.
Demonstrated high stability, multibit modulation, and precise stabilization of antireflection conditions via feedback loop.

Conclusions:

The VO2-based electro-optic THz modulator offers efficient and smart control of THz waves.
The use of strongly correlated electron materials opens new possibilities for THz smart devices.
This technology advances the development of THz spectroscopic and communication systems.