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

Metal-Semiconductor Junctions

Metal-Semiconductor Junctions

The contact of metal and semiconductor can lead to the formation of a junction with either Schottky or Ohmic behavior.
Schottky Barriers
Schottky barriers arise when a metal with a work function (Φm) contacts a semiconductor with a different work function (Φs). Initially, electrons transfer until the Fermi levels of the metal and semiconductor align at equilibrium. For instance, if Φm > Φs, the semiconductor Fermi level is higher than the metal's before contact. The...

Molecular Orbital Theory II

Molecular Orbital Theory II

Molecular Orbital Energy Diagrams

Phase Transitions: Sublimation and Deposition

Phase Transitions: Sublimation and Deposition

Some solids can transition directly into the gaseous state, bypassing the liquid state, via a process known as sublimation. At room temperature and standard pressure, a piece of dry ice (solid CO2) sublimes, appearing to gradually disappear without ever forming any liquid. Snow and ice sublimate at temperatures below the melting point of water, a slow process that may be accelerated by winds and the reduced atmospheric pressures at high altitudes. When solid iodine is warmed, the solid sublimes...

SN2 Reaction: Transition State

S_N2 Reaction: Transition State

An SN2 reaction of an alkyl halide is a single-step process in which bond formation between the nucleophile and the substrate and bond breaking between the substrate and the halide occurs simultaneously through a transition state without forming an intermediate.
When the nucleophile approaches the electrophilic carbon with its lone pairs, the halide acts as a leaving group and moves away with the electron-pair bonded to the carbon. Dotted partial bonds represent the bonds being formed or broken...

Energy Diagrams, Transition States, and Intermediates

Energy Diagrams, Transition States, and Intermediates

Free-energy diagrams, or reaction coordinate diagrams, are graphs showing the energy changes that occur during a chemical reaction. The reaction coordinate represented on the horizontal axis shows how far the reaction has progressed structurally. Positions along the x-axis close to the reactants have structures resembling the reactants, while positions close to the products resemble the products. Peaks on the energy diagram represent stable structures with measurable lifetimes, while...

Properties of Transition Metals

Properties of Transition Metals

Transition metals are defined as those elements that have partially filled d orbitals. As shown in Figure 1, the d-block elements in groups 3–12 are transition elements. The f-block elements, also called inner transition metals (the lanthanides and actinides), also meet this criterion because the d orbital is partially occupied before the f orbitals.

You might also read

Related Articles

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

Sort by

Same author

On-treatment change in bone turnover markers predicts 2-year bone mineral density after sequential therapy following romosozumab: a real-world cohort study.

Frontiers in endocrinology·2026

Same author

Partial lumbar spine response in hip non-responders to romosozumab: Baseline bone mineral density as the principal determinant in a multi-center real-world Japanese cohort (n = 398).

Bone·2026

Same author

Context-Dependent Association Between Serum 25-Hydroxyvitamin D and Romosozumab Bone Mineral Density Response: A Stratified Analysis by Renal Function Category and Prior Treatment History in a Real-World Japanese Cohort.

Nutrients·2026

Same author

Romosozumab Achieves Consistent Lumbar Spine BMD Gains Across All BMI Categories: The Apparent Enhanced Response in Underweight Patients is a Mathematical Artifact of Percentage Change.

Calcified tissue international·2026

Same author

Prior treatment, not vitamin D, predicts romosozumab response in 314 osteoporosis patients: A retrospective cohort study.

Bone reports·2026

Same author

Inside the Microreactor: In Situ Real-Time Observation of Vapor-Liquid-Solid Growth of Monolayer TMDCs.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)·2025

Search research articles

Related Experiment Video

Updated: Jul 31, 2025

Preparation of Large-area Vertical 2D Crystal Hetero-structures Through the Sulfurization of Transition Metal Films for Device Fabrication

Preparation of Large-area Vertical 2D Crystal Hetero-structures Through the Sulfurization of Transition Metal Films for Device Fabrication

Published on: November 28, 2017

Intermediate State between MoSe₂ and Janus MoSeS during Atomic Substitution Process.

Hiroo Suzuki^1,2, Yijun Liu¹, Masaaki Misawa^1,2

¹Graduate School of Natural Science and Technology, Okayama University, Okayama 700-8530, Japan.

|May 8, 2023

Summary

This summary is machine-generated.

Researchers explored the intermediate stages of creating Janus transition metal dichalcogenides (TMDCs) using plasma processing. They identified a partially substituted Janus structure and its unique Raman modes, advancing the understanding of TMDC synthesis.

Keywords:

Density functional theory calculation Janus TMDCs Photoluminescence spectroscopy Plasma process Raman spectroscopy Transition metal dichalcogenides (TMDCs)

More Related Videos

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Published on: August 30, 2024

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Published on: December 5, 2015

Related Experiment Videos

Last Updated: Jul 31, 2025

Preparation of Large-area Vertical 2D Crystal Hetero-structures Through the Sulfurization of Transition Metal Films for Device Fabrication

Preparation of Large-area Vertical 2D Crystal Hetero-structures Through the Sulfurization of Transition Metal Films for Device Fabrication

Published on: November 28, 2017

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Demonstrating the Simplicity and In Situ Temperature Monitoring of the Mechanochemical Synthesis of Metal Chalcogenides Suitable for Thermoelectrics

Published on: August 30, 2024

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Ohmic Contact Fabrication Using a Focused-ion Beam Technique and Electrical Characterization for Layer Semiconductor Nanostructures

Published on: December 5, 2015

Area of Science:

Materials Science
Condensed Matter Physics
Nanotechnology

Background:

Janus transition metal dichalcogenides (TMDCs) possess unique out-of-plane polarization due to dissimilar chalcogen atoms.
Existing plasma synthesis methods for Janus TMDCs lack a complete understanding of formation dynamics and intermediate electronic states.

Purpose of the Study:

To investigate the intermediate states during the plasma-assisted synthesis of Janus Molybdenum Diselenide Sulfide (MoSeS) from Molybdenum Diselenide (MoSe2).
To elucidate the structural and electronic properties of these intermediate states.

Main Methods:

Plasma processing of MoSe2.
Atomic composition analysis and atomic-scale structural observations.
Theoretical calculations and photoluminescence (PL) spectroscopy.

Main Results:

Identification of a partially substituted Janus (PSJ) structure as a key intermediate.
Clarification of characteristic Raman modes associated with the PSJ structure.
Observation of discontinuous transitions in PL spectra, not fully explained by theoretical models.

Conclusions:

The study reveals the PSJ structure as a crucial intermediate in Janus TMDC formation via plasma processing.
Understanding these intermediate states and their electronic properties is vital for controlling Janus TMDC synthesis.
Further investigation is needed to reconcile experimental PL observations with theoretical predictions.