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

Poisson's And Laplace's Equation01:25

Poisson's And Laplace's Equation

The electric potential of the system can be calculated by relating it to the electric charge densities that give rise to the electric potential. The differential form of Gauss's law expresses the electric field's divergence in terms of the electric charge density.
Region of Convergence of Laplace Tarnsform01:20

Region of Convergence of Laplace Tarnsform

The Region of Convergence (ROC) is a fundamental concept in signal processing and system analysis, particularly associated with the Laplace transform. The ROC represents an area in the complex plane where the Laplace transform of a given signal converges, determining the transform's applicability and utility.
Consider a decaying exponential signal that begins at a specific time. When deriving its Laplace transform, the time-domain variable is replaced with a complex variable. This substitution...
Carrier Transport01:21

Carrier Transport

The generation of electrical current in semiconductors is fundamentally driven by two mechanisms: drift and diffusion. These processes are essential for the functionality and performance of semiconductor-based devices.
Drift Current:
The drift of charge carriers is started by an external electric field (E). Charged particles, such as electrons and holes, experience an acceleration between collisions with lattice atoms. For electrons, this results in a drift velocity (vd) given by:
Protein Diffusion in the Membrane01:24

Protein Diffusion in the Membrane

Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
Second Derivatives and Laplace Operator01:22

Second Derivatives and Laplace Operator

The first order operators using the del operator include the gradient, divergence and curl. Certain combinations of first order operators on a scalar or vector function yield second order expressions. Second-order expressions play a very important role in mathematics and physics. Some second order expressions include the divergence and curl of a gradient function, the divergence and curl of a curl function, and the gradient of a divergence function.
Consider a scalar function. The curl of its...
Diffusion01:12

Diffusion

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...

You might also read

Related Articles

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

Sort by
Same author

Assessing the impact of unpublished data on network meta-analysis outcomes in outpatient adults with acute migraine: a study within a review.

Journal of clinical epidemiology·2025
Same author

The Experience of SARS-CoV-2 in Patients with Benign Prostatic Hyperplasia: Is There Any Correlation between Them?

Maedica·2025
Same author

Ureteroscopy Versus Double J Stenting in Emergency Treatment of Obstructive Lithiasis.

Maedica·2024
Same author

Semirigid <i>vs</i> Flexible Ureteroscopy in the Management of Ureteral Stones - Review.

Maedica·2023
Same author

The Management of Reno-Ureteral Lithiasis - from Emergency Presentation to Definitive Treatment.

Maedica·2023
Same author

The Influence of SARS-CoV-2 on Minimally Invasive Therapeutic Approach for Benign Prostatic Hyperplasia.

Maedica·2023
Same journal

Unsupervised deep image prior for sparse-view and limited-angle electron tomography.

Ultramicroscopy·2026
Same journal

Determination of the structure of the tertiary phase in the alloy Al<sub>10</sub>Mo<sub>10</sub>Nb<sub>10</sub>Ta<sub>10</sub>Ti<sub>30</sub>Zr<sub>30</sub> using convergent beam electron diffraction.

Ultramicroscopy·2026
Same journal

Predictive drift compensation of multi-frame STEM via live scan modification.

Ultramicroscopy·2026
Same journal

Deep PACBED: Multitask analysis of PACBED images using deep neural networks.

Ultramicroscopy·2026
Same journal

Guided progressive reconstructive imaging: A new quantization-based framework for low-dose, high-throughput and real-time analytical ptychography.

Ultramicroscopy·2026
Same journal

Brightness optimization in a 200 keV DTEM source by geometry-driven aberration suppression.

Ultramicroscopy·2026
See all related articles

Related Experiment Video

Updated: Jun 26, 2026

The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

Reactive diffusion under Laplace tension.

C Ene1, C Nowak, C Oberdorfer

  • 1Institute of Material Physics, University of Göttingen, Friedrich-Hund-Platz 1, 37077 Göttingen, Germany.

Ultramicroscopy
|January 28, 2009
PubMed
Summary
This summary is machine-generated.

The deposition sequence of aluminum/copper (Al/Cu) thin films on curved surfaces significantly impacts reaction rates. Interfacial tension influences atomic transport, leading to different kinetic models based on stacking order.

More Related Videos

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
15:10

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

Published on: October 9, 2014

Related Experiment Videos

Last Updated: Jun 26, 2026

The Diffusion of Passive Tracers in Laminar Shear Flow
08:01

The Diffusion of Passive Tracers in Laminar Shear Flow

Published on: May 1, 2018

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope
15:10

From Fast Fluorescence Imaging to Molecular Diffusion Law on Live Cell Membranes in a Commercial Microscope

Published on: October 9, 2014

Area of Science:

  • Materials Science
  • Surface Science
  • Physical Chemistry

Background:

  • Nanostructures often exhibit highly curved surfaces and interfaces.
  • Understanding reaction kinetics on such surfaces is crucial for nanomaterial applications.

Purpose of the Study:

  • To investigate the effect of severe surface curvature on the kinetics of thermal reactions in multilayer thin films.
  • To determine how the deposition sequence of metals influences reaction rates in nanostructured systems.

Main Methods:

  • Deposition of thin-film Al/Cu/Al and Cu/Al/Cu multilayers onto tungsten tips with a 25nm curvature radius.
  • Utilizing atom probe tomography to study the thermal reaction of the layered structures.

Main Results:

  • The reaction rate demonstrated a significant dependence on the specific deposition sequence of the metals (Al/Cu/Al vs. Cu/Al/Cu).
  • Observed reaction kinetics suggest that interfacial tension plays a key role in governing atomic transport.

Conclusions:

  • The study concludes that the stacking sequence dictates whether Darken or Nernst-Planck kinetics dominate atomic transport under severe curvature.
  • Interfacial tension is identified as a critical factor influencing reaction pathways in nanostructured thin films.