Related Experiment Video

Updated: May 23, 2026

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations
13:56

Probe Type II Band Alignment in One-Dimensional Van Der Waals Heterostructures Using First-Principles Calculations

Published on: October 12, 2019

Covalently bonded three-dimensional carbon nanotube solids via boron induced nanojunctions

Daniel P Hashim, Narayanan T Narayanan, Jose M Romo-Herrera

    Scientific Reports
    |April 18, 2012
    PubMed

    More Related Videos

    Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures09:23

    Fabrication, Densification, and Replica Molding of 3D Carbon Nanotube Microstructures

    Published on: July 2, 2012

    Novel 3D/VR Interactive Environment for MD Simulations, Visualization and Analysis11:29

    Novel 3D/VR Interactive Environment for MD Simulations, Visualization and Analysis

    Published on: December 18, 2014

    Related Concept Videos

    Network Covalent Solids02:18

    Network Covalent Solids

    Network covalent solids contain a three-dimensional network of covalently bonded atoms as found in the crystal structures of nonmetals like diamond, graphite, silicon, and some covalent compounds, such as silicon dioxide (sand) and silicon carbide (carborundum, the abrasive on sandpaper). Many minerals have networks of covalent bonds.
    To break or to melt a covalent network solid, covalent bonds must be broken. Because covalent bonds are relatively strong, covalent network solids are typically...
    Covalent Bonds01:29

    Covalent Bonds

    Overview
    Covalent Bonds01:08

    Covalent Bonds

    Overview
    When two atoms share electrons to complete their valence shells, they create a covalent bond. An atom's electronegativity—the force with which shared electrons are pulled towards an atom—determines how the electrons are shared. Molecules formed with covalent bonds can be either polar or nonpolar. Atoms with similar electronegativities form nonpolar covalent bonds; the electrons are shared equally. Atoms with different electronegativities share electrons unequally, creating polar bonds.
    Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)01:22

    Spin–Spin Coupling: Three-Bond Coupling (Vicinal Coupling)

    Vicinal or three-bond coupling is commonly observed between protons attached to adjacent carbons. Here, nuclear spin information is primarily transferred via electron spin interactions between adjacent C‑H bond orbitals. This generally favors the antiparallel arrangement of spins, so 3J values are usually positive.
    The extent of coupling depends on the C‑C bond length, the two H‑C‑C angles, any electron-withdrawing substituents, and the dihedral angle between the involved orbitals. The...
    Hybridization of Atomic Orbitals I03:24

    Hybridization of Atomic Orbitals I

    The mathematical expression known as the wave function, ψ, contains information about each orbital and the wavelike properties of electrons in an isolated atom. When atoms are bound together in a molecule, the wave functions combine to produce new mathematical descriptions that have different shapes. This process of combining the wave functions for atomic orbitals is called hybridization and is mathematically accomplished by the linear combination of atomic orbitals. The new orbitals that...