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

The Contractile Ring02:15

The Contractile Ring

Contractile rings are composed of microfilaments and are responsible for separating the daughter cells during cytokinesis. Contractile ring assembly proceeds along with other cell cycle events; however, very few mechanistic details are known about the timing and coordination of the contractile rings with the cell cycle.
A small GTPase, RhoA, controls the function and assembly of the contractile ring. RhoA belongs to the Ras superfamily of proteins. The activation of formins by RhoA promotes...
Chair Conformation of Cyclohexane02:02

Chair Conformation of Cyclohexane

The chair conformation is the most stable form of cyclohexane due to the absence of angle and torsional strain. The absence of angle strain is a result of cyclohexane’s bond angle being very close to the ideal tetrahedral bond angle of 109.5° in its chair conformer. Similarly, the torsional strain is also absent owing to the perfectly staggered arrangement of bonds.
The hydrogen atoms linked to carbons are arranged in two different axial and equatorial orientations to achieve this staggered...
Cell Size01:22

Cell Size

Cell sizes vary widely among and within organisms. Bacterial cells range between 1-10 micrometers (μm)and are considerably smaller than most eukaryotic cells. The smallest bacteria are 0.1 μm in diameter—about a thousand times smaller than eukaryotic cells, which typically range from 10-100 μm.Surface AreaCells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding the cells limits the...
Gravitational Potential Energy for Extended Objects01:07

Gravitational Potential Energy for Extended Objects

Consider a system comprising several point masses. The coordinates of the center of mass for this system can be expressed as the summation of the product of each mass and its position vector divided by the total mass:
Design Example: Calculating Safe Diameter for Wind-Exposed Disc01:17

Design Example: Calculating Safe Diameter for Wind-Exposed Disc

Assessing safety in wind-exposed installations is crucial to preventing potential failures. This example explores the calculation and design adjustments needed to mount a circular disc on a building facade, where wind forces are a primary concern. A 4-meter diameter disc was initially designed as an aesthetic feature facing winds at a velocity of 25 meters per second, with an air density of 1.25 kilograms per cubic meter. Given these conditions, the drag force on the disc was determined using...
Stereoisomerism of Cyclic Compounds02:33

Stereoisomerism of Cyclic Compounds

In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...

You might also read

Related Articles

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

Sort by
Same author

PdCu@rGO-based Electrochemical Sensor for Rapid Detection of Catechol.

Sensors (Basel, Switzerland)·2026
Same author

Valorization of the cauliflower mushroom (<i>Sparassis latifolia</i>) pseudosclerotia via ultrasound-assisted extraction of polysaccharides: Optimization, characterization and bioactivity evaluation.

Food chemistry: X·2026
Same author

Epithelial-myoepithelial carcinoma with high-grade transformation of bartholin gland - A case report and literature review.

Taiwanese journal of obstetrics & gynecology·2026
Same author

Contemporary HIV-1 envelope pseudovirus panels for detecting and assessing B cell lineages with broadly neutralizing antibody potential.

PLoS pathogens·2026
Same author

Coordinated immune response distinguishes duration of SARS-CoV-2 viral particle shedding in humans.

iScience·2026
Same author

Betulinic Acid Attenuates Vascular Smooth Muscle Cell Senescence and Aortic Vascular Aging via PPAR-α/CPT1A-Mediated Fatty Acid Oxidation.

Rejuvenation research·2026

Related Experiment Video

Updated: Jun 14, 2026

Fabrication of Custom Agarose Wells for Cell Seeding and Tissue Ring Self-assembly Using 3D-Printed Molds
08:16

Fabrication of Custom Agarose Wells for Cell Seeding and Tissue Ring Self-assembly Using 3D-Printed Molds

Published on: April 2, 2018

Minimal size of coffee ring structure.

Xiaoying Shen1, Chih-Ming Ho, Tak-Sing Wong

  • 1Institute of Microelectronics, Peking University, Beijing, PR China.

The Journal of Physical Chemistry. B
|April 1, 2010
PubMed
Summary

The coffee ring effect, where particles form rings from evaporating droplets, has a minimum size limit. Below this threshold, droplet evaporation outpaces particle movement, preventing ring formation.

Area of Science:

  • Fluid dynamics
  • Colloid science
  • Surface science

Background:

  • Macroscopic evaporating droplets with suspended particles form ring-like structures at the contact line due to capillary flow.
  • Droplet size and the competition between liquid evaporation and particle movement influence ring formation.
  • Coffee ring formation may cease if liquid evaporates much faster than particle movement.

Purpose of the Study:

  • To experimentally determine the lower limit of droplet size for successful coffee ring structure formation.
  • To investigate the influence of particle concentration and droplet dynamics on coffee ring formation.
  • To establish a relationship between droplet size, evaporation rate, and particle motion.

Main Methods:

  • Experimental observation of evaporating water droplets with suspended particles on a solid surface.

More Related Videos

The Assembly and Application of 'Shear Rings': A Novel Endothelial Model for Orbital, Unidirectional and Periodic Fluid Flow and Shear Stress
09:20

The Assembly and Application of 'Shear Rings': A Novel Endothelial Model for Orbital, Unidirectional and Periodic Fluid Flow and Shear Stress

Published on: October 31, 2016

Scaling of Engineered Vascular Grafts Using 3D Printed Guides and the Ring Stacking Method
09:38

Scaling of Engineered Vascular Grafts Using 3D Printed Guides and the Ring Stacking Method

Published on: March 27, 2017

Related Experiment Videos

Last Updated: Jun 14, 2026

Fabrication of Custom Agarose Wells for Cell Seeding and Tissue Ring Self-assembly Using 3D-Printed Molds
08:16

Fabrication of Custom Agarose Wells for Cell Seeding and Tissue Ring Self-assembly Using 3D-Printed Molds

Published on: April 2, 2018

The Assembly and Application of 'Shear Rings': A Novel Endothelial Model for Orbital, Unidirectional and Periodic Fluid Flow and Shear Stress
09:20

The Assembly and Application of 'Shear Rings': A Novel Endothelial Model for Orbital, Unidirectional and Periodic Fluid Flow and Shear Stress

Published on: October 31, 2016

Scaling of Engineered Vascular Grafts Using 3D Printed Guides and the Ring Stacking Method
09:38

Scaling of Engineered Vascular Grafts Using 3D Printed Guides and the Ring Stacking Method

Published on: March 27, 2017

  • Varying droplet size and particle concentration to study ring formation.
  • Analysis of particle movement and liquid evaporation dynamics.

    • Main Results:

    • A lower limit of droplet size, D(c), for coffee ring formation was experimentally identified.
    • When particle concentration exceeds a threshold, D(c) depends on liquid evaporation and particle diffusive motion.
    • For 100 nm particles, the minimum coffee ring diameter observed was approximately 10 micrometers.

    Conclusions:

    • Droplet size is a critical factor in coffee ring formation, with a distinct lower limit.
    • The interplay between evaporation rate and particle dynamics governs the formation of coffee ring structures.
    • Understanding these limits is crucial for applications involving particle deposition from evaporating droplets.