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

Imperfections in Crystal Structure: Point, Line and Plane Defects01:25

Imperfections in Crystal Structure: Point, Line and Plane Defects

110
A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...
110
Methods of Obtaining Topography01:25

Methods of Obtaining Topography

491
Topography involves measuring and mapping land elevations, natural features, and artificial structures to create accurate representations of the terrain. Topographic surveying relies on traditional and modern methods, each with distinct advantages and limitations.Traditional Surveying Methods:Transit stadia surveys and plane table surveys were widely used traditional surveying methods. These techniques relied on instruments like theodolites and stadia rods for measuring distances and angles,...
491
Rotation of Asymmetric Top01:11

Rotation of Asymmetric Top

1.8K
By definition, a spherically symmetric body has the same moment of inertia about any axis passing through its center of mass. This situation changes if there is no spherical symmetry. Since most rigid bodies are not spherically symmetric, these require special treatment.
The relationship between the angular momentum of any rigid body and its angular velocity, both of which are vectors, involves the moment of inertia. The moment of inertia is a scalar quantity only for spherically symmetric...
1.8K
Equipotential Surfaces and Field Lines01:29

Equipotential Surfaces and Field Lines

5.6K
Electric potential can be pictorially represented as a three-dimensional surface. On such a surface, the electric potential is constant everywhere. The equipotential surface is always perpendicular to the electric field lines, and while it is three-dimensional, it can be treated as an equipotential line in a two-dimensional case. These equipotential lines are also always perpendicular to electric field lines. The term equipotential is often used as a noun, referring to an equipotential line or...
5.6K
Equipotential Surfaces and Conductors01:16

Equipotential Surfaces and Conductors

4.8K
For a conductor in which all charges are at rest, the conductor's surface is equipotential. The electric field is always perpendicular to equipotential surfaces. Therefore, in a conductor with static charges, the electric field just outside the conductor is always perpendicular to the conductor's surface. Any tangential component of the electric field will cause charges to move inside the conductor, which will violate the electrostatic nature of the system. In an electrostatic...
4.8K
Plastic Deformations of Members with a Single Plane of Symmetry01:21

Plastic Deformations of Members with a Single Plane of Symmetry

455
When a structural member undergoes plastic deformation due to bending, it is crucial to understand the position of the neutral axis and the stress distribution. This member, characterized by a single plane of symmetry, exhibits a uniform stress distribution, with negative stress above the neutral axis and positive stress below. Notably, the neutral axis does not align with the centroid of the cross-section. This misalignment is typical in cases where the cross-section is not rectangular or...
455

You might also read

Related Articles

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

Sort by
Same author

Introducing the special issue on current research in crystal growth and related characterization.

Acta crystallographica Section B, Structural science, crystal engineering and materials·2026
Same author

Structural and magnetic investigations of the Weyl semimetal family CeAlSi<sub>1-x</sub>Ge<sub>x</sub>.

Acta crystallographica Section B, Structural science, crystal engineering and materials·2026
Same author

Element-Selective Probing of Ultrafast Ferromagnetic-Antiferromagnetic Order Dynamics in Fe/CoO Bilayers.

Physical review letters·2026
Same author

Niraparib in breast cancer: evidence-based perspective on translational progress.

Breast cancer (Tokyo, Japan)·2026
Same author

Structure and Chemistry of Flat and Stepped Rh Surfaces during NO Dissociation near 1 mbar.

Journal of the American Chemical Society·2026
Same author

Dielectric and Gate Metal Engineering for Threshold Voltage Modulation in Enhancement Mode Monolayer MoS<sub>2</sub> Field Effect Transistors.

Advanced materials (Deerfield Beach, Fla.)·2026

Related Experiment Video

Updated: Apr 11, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

10.7K

Anomalies of a topologically ordered surface.

Deepnarayan Biswas1, Sangeeta Thakur1, Khadiza Ali1

  • 1Department of Condensed Matter Physics and Materials' Science, Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai - 400 005, India.

Scientific Reports
|June 5, 2015
PubMed
Summary

Topological surface states in bismuth selenide are sensitive to surface termination and impurities. This study reveals how Bi and Se terminations affect Dirac states, crucial for future electronic devices.

More Related Videos

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
08:02

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Published on: February 11, 2020

9.5K
Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
08:18

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

Published on: March 4, 2021

2.3K

Related Experiment Videos

Last Updated: Apr 11, 2026

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser
09:00

Experimental Methods for Spin- and Angle-Resolved Photoemission Spectroscopy Combined with Polarization-Variable Laser

Published on: June 28, 2018

10.7K
Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars
08:02

Rendering SiO2/Si Surfaces Omniphobic by Carving Gas-Entrapping Microtextures Comprising Reentrant and Doubly Reentrant Cavities or Pillars

Published on: February 11, 2020

9.5K
Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
08:18

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry

Published on: March 4, 2021

2.3K

Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Physics

Background:

  • Topological insulators possess metallic surface states protected by time-reversal symmetry.
  • Experimental observations show topological states are vulnerable to aging and impurities, leading to anomalies.

Purpose of the Study:

  • Investigate the electronic structure of bismuth selenide (Bi2Se3) to understand the behavior of topological surface states.
  • Determine the influence of surface terminations on the Dirac states.

Main Methods:

  • High-resolution photoemission spectroscopy was employed to probe the electronic structure.
  • Analysis focused on the Dirac cone apex and its energy shifts on different surface terminations.

Main Results:

  • The Dirac cone apex binding energy differs between Bi- and Se-terminated surfaces.
  • Contrasting shifts in Dirac states were observed, influenced by surface termination.
  • Time-dependent changes were linked to adsorbed oxygen-surface atom interactions.

Conclusions:

  • Surface termination significantly impacts topological surface states in bismuth selenide.
  • Understanding these variations is critical for device fabrication and exploring exotic phenomena like Majorana Fermions.