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

Noncovalent Attractions in Biomolecules02:35

Noncovalent Attractions in Biomolecules

65.0K
Noncovalent attractions are associations within and between molecules that influence the shape and structural stability of complexes. These interactions differ from covalent bonding in that they do not involve sharing of electrons.
Four types of noncovalent interactions are hydrogen bonds, van der Waals forces, ionic bonds, and hydrophobic interactions.
Hydrogen bonding results from the electrostatic attraction of a hydrogen atom covalently bonded to a strong-electronegative atom like oxygen,...
65.0K
Atomic Structure01:33

Atomic Structure

210.0K
Overview
210.0K
The Energies of Atomic Orbitals03:21

The Energies of Atomic Orbitals

30.2K
In an atom, the negatively charged electrons are attracted to the positively charged nucleus. In a multielectron atom, electron-electron repulsions are also observed. The attractive and repulsive forces are dependent on the distance between the particles, as well as the sign and magnitude of the charges on the individual particles. When the charges on the particles are opposite, they attract each other. If both particles have the same charge, they repel each other.
30.2K
Diffusion01:12

Diffusion

219.2K
Diffusion is the passive movement of substances down their concentration gradients—requiring no expenditure of cellular energy. Substances, such as molecules or ions, diffuse from an area of high concentration to an area of low concentration in the cytosol or across membranes. Eventually, the concentration will even out, with the substance moving randomly but causing no net change in concentration. Such a state is called dynamic equilibrium, which is essential for maintaining overall...
219.2K
Atomic Orbitals02:44

Atomic Orbitals

44.0K
An atomic orbital represents the three-dimensional regions in an atom where an electron has the highest probability to reside. The radial distribution function indicates the total probability of finding an electron within the thin shell at a distance r from the nucleus. The atomic orbitals have distinct shapes which are determined by l, the angular momentum quantum number. The orbitals are often drawn with a boundary surface, enclosing densest regions of the cloud.
44.0K
Factors Influencing Attraction II: Physical Attraction01:21

Factors Influencing Attraction II: Physical Attraction

257
Physical attractiveness plays a crucial role in shaping interpersonal attraction, influencing first impressions, social interactions, and long-term relationship dynamics. Psychological research consistently demonstrates that attractiveness affects social evaluations and behavioral outcomes in various contexts.Influence on Social InteractionsResearch has shown that individuals perceived as physically attractive often experience preferential treatment in social and professional settings. One...
257

You might also read

Related Articles

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

Sort by
Same author

Optimizing Extraction and HPLC-ESI-QTOF-MS/MS Analysis of Bound Phenolics From Okra (<i>Abelmoschus esculentus</i>) and Their Biological Activity.

Food science & nutrition·2026
Same author

AI-Based Detection of Proximal Caries Across Radiographic Modalities: A Systematic Review and Meta-Analysis.

Dento maxillo facial radiology·2026
Same author

Reprogramming macrophage immunometabolism via glutamine antagonism potentiates colorectal cancer therapy in mice.

Nature communications·2026
Same author

Mucosal Involvement in Bullous Pemphigoid: Severity Indicator and Associated Clinical Features from a Retrospective Cohort Study.

Journal of inflammation research·2026
Same author

Comparative study on the wound healing effects of local versus systemic application of Polymyxin B in mice infected with multidrug-resistant <i>Pseudomonas aeruginosa</i>.

Frontiers in microbiology·2026
Same author

Safety, Pharmacokinetics, and Efficacy of 1.5% Ruxolitinib Gel (HDM3010) in Adult Patients with Prurigo Nodularis: A Phase I/II, Randomized, Double-Blind, Vehicle-Controlled Multicenter Clinical Trial.

Dermatology and therapy·2026

Related Experiment Video

Updated: Feb 4, 2026

Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion
09:17

Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion

Published on: March 1, 2022

3.6K

Anomalous diffusion of polystyrene from an attractive substrate based on all-atom simulation.

Bingjie Zhang1, Xiuli Cao, Ge Zhou

  • 1College of Chemistry, Sichuan University, Chengdu 610064, China. zhougekk@scu.edu.cn zhaonanr@scu.edu.cn.

Physical Chemistry Chemical Physics : PCCP
|September 27, 2018
PubMed
Summary

Polystyrene (PS) diffusion from silicon surfaces is complex. Moderate grafting densities unexpectedly slow diffusion, while low or full densities enhance it by altering chain configuration and energy barriers.

More Related Videos

A Method for Determination and Simulation of Permeability and Diffusion in a 3D Tissue Model in a Membrane Insert System for Multi-well Plates
10:33

A Method for Determination and Simulation of Permeability and Diffusion in a 3D Tissue Model in a Membrane Insert System for Multi-well Plates

Published on: February 23, 2018

26.1K
Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
08:53

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

Published on: October 2, 2017

31.6K

Related Experiment Videos

Last Updated: Feb 4, 2026

Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion
09:17

Structure-Based Simulation and Sampling of Transcription Factor Protein Movements along DNA from Atomic-Scale Stepping to Coarse-Grained Diffusion

Published on: March 1, 2022

3.6K
A Method for Determination and Simulation of Permeability and Diffusion in a 3D Tissue Model in a Membrane Insert System for Multi-well Plates
10:33

A Method for Determination and Simulation of Permeability and Diffusion in a 3D Tissue Model in a Membrane Insert System for Multi-well Plates

Published on: February 23, 2018

26.1K
Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092
08:53

Biochemical and Structural Characterization of the Carbohydrate Transport Substrate-binding-protein SP0092

Published on: October 2, 2017

31.6K

Area of Science:

  • Materials Science
  • Polymer Physics
  • Surface Chemistry

Background:

  • Understanding polymer diffusion at surfaces is crucial for material design.
  • The influence of surface grafting density on polymer dynamics is not fully understood.

Purpose of the Study:

  • To investigate the effect of grafting density on polystyrene diffusion from a hydroxyl-terminated silicon surface.
  • To elucidate the mechanisms behind grafting density-dependent polymer diffusion.

Main Methods:

  • All-atom molecular dynamics simulations were employed.
  • Simulations analyzed the diffusion and configurational properties of polystyrene chains.
  • Energy and conformational changes were examined to understand diffusion mechanisms.

Main Results:

  • A non-monotonic relationship was observed between grafting density and polystyrene diffusion.
  • Moderate grafting densities significantly hindered diffusion due to increased energy barriers and chain stretching.
  • Low or full grafting densities facilitated diffusion by reducing energy barriers and promoting chain contraction.

Conclusions:

  • The study reveals a novel, non-intuitive effect of grafting density on polymer diffusion.
  • Surface interactions and chain conformations play critical roles in modulating polymer dynamics.
  • Findings provide insights for designing surfaces with controlled polymer diffusion properties.