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

Precipitate Formation and Particle Size Control01:16

Precipitate Formation and Particle Size Control

5.0K
In precipitation gravimetry, the precipitating agent should react specifically or selectively with the analyte. While a specific reagent reacts with the analyte alone, a selective reagent can react with a limited number of chemical species.
The obtained precipitate should be either a pure substance of known composition or easily converted to one by a simple process, such as ignition or drying. In addition, the precipitate should be insoluble and easily filterable. In general, filterability...
5.0K
Colloids and Suspensions01:17

Colloids and Suspensions

3.0K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles visible to the naked eye or seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. The suspended particles in a suspension settle out after some time of mixing. The separation of particles from a suspension is...
3.0K

You might also read

Related Articles

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

Sort by
Same author

Proteomic markers enhance mortality prediction in heart failure.

European heart journal·2026
Same author

Isolation and characterization of phage vB_KpnS_SXK7 against multidrug-resistant Klebsiella pneumoniae and the mechanism of O-antigen-associated phage resistance.

BMC microbiology·2026
Same author

Preventing Ventilator-Associated Pneumonia: A Multicenter Cross-Sectional Study of Knowledge, Attitudes, and Practices of Medical Staff in Chinese Hospitals.

Medical science monitor : international medical journal of experimental and clinical research·2026
Same author

Symptom Clusters and Sentinel Symptoms in Heart Failure Patients: A Cross-Sectional Survey.

International journal of general medicine·2026
Same author

A novel ABCD1 frameshift mutation detected in a Chinese male with adrenomyeloneuropathy.

Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology·2026
Same author

Family Functioning and Kinesiophobia in Patients After Pacemaker Implantation: A Cross-Sectional Serial Mediation Study of Pain and Pain Catastrophizing.

Journal of pain research·2026

Related Experiment Video

Updated: Jan 8, 2026

Generation of Size-controlled Poly ethylene Glycol Diacrylate Droplets via Semi-3-Dimensional Flow Focusing Microfluidic Devices
11:08

Generation of Size-controlled Poly ethylene Glycol Diacrylate Droplets via Semi-3-Dimensional Flow Focusing Microfluidic Devices

Published on: July 3, 2018

8.1K

Precise Control of Protrusion Site, Size, and Roughness on Non-Spherical Colloids.

Meiyin Gao1,2,3, Yanran Li1,2,3, Longfei Luo4

  • 1School of Synthetic Biology and Biomanufacturing, Tianjin University, Tianjin 300072, China.

Langmuir : the ACS Journal of Surfaces and Colloids
|December 24, 2025
PubMed
Summary

Researchers precisely controlled where new material grows on dented colloidal particles by adjusting synthesis times. This allows for programming the location and roughness of Janus particles, creating advanced functional materials.

More Related Videos

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
13:15

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

11.4K
Production of Large Numbers of Size-controlled Tumor Spheroids Using Microwell Plates
10:44

Production of Large Numbers of Size-controlled Tumor Spheroids Using Microwell Plates

Published on: November 18, 2013

17.9K

Related Experiment Videos

Last Updated: Jan 8, 2026

Generation of Size-controlled Poly ethylene Glycol Diacrylate Droplets via Semi-3-Dimensional Flow Focusing Microfluidic Devices
11:08

Generation of Size-controlled Poly ethylene Glycol Diacrylate Droplets via Semi-3-Dimensional Flow Focusing Microfluidic Devices

Published on: July 3, 2018

8.1K
Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
13:15

Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy

Published on: July 18, 2014

11.4K
Production of Large Numbers of Size-controlled Tumor Spheroids Using Microwell Plates
10:44

Production of Large Numbers of Size-controlled Tumor Spheroids Using Microwell Plates

Published on: November 18, 2013

17.9K

Area of Science:

  • Colloid and surface science
  • Materials chemistry
  • Polymer science

Background:

  • Anisotropic colloidal particles are crucial for fundamental research and functional materials.
  • Previous work showed dented seeds (SBI and PSIs) formed by delayed cross-linker addition.
  • Monomer nucleation at dent sites in seeded emulsion polymerization was observed but not fully understood.

Purpose of the Study:

  • To investigate the factors controlling site selectivity during seeded emulsion polymerization on dented colloidal seeds.
  • To understand how delayed feeding time (t_d) of divinylbenzene (DVB) influences nucleation and particle morphology.
  • To explore methods for creating Janus particles with programmable protrusion locations and surface roughness.

Main Methods:

  • Systematic variation of the delayed feeding time (t_d) of DVB to prepare seeds with controlled dents.
  • Seeded emulsion polymerization of monomers onto these prepared seeds.
  • Analysis of particle morphology, surface roughness, and protrusion formation under varied conditions (temperature, initiator concentration).

Main Results:

  • Particles with coexisting rough and smooth surface domains were produced.
  • For low t_d seeds (≤ 3.5 h), monomer preferentially nucleated at the shell buckling-induced indentation (SBI).
  • For high t_d seeds (4.5 h), nucleation occurred preferentially within a phase-separated indentation (PSI).
  • Increased temperature or initiator concentration led to smoother seed surfaces, forming Janus particles.
  • Site selectivity and surface roughness were attributed to spatial variations in seed cross-linking density.

Conclusions:

  • The cross-linking density differences between SBI and PSIs dictate nucleation site preference.
  • A simple method for programming Janus particle protrusion location and roughness was developed.
  • This provides a flexible platform for creating next-generation functional colloids with tailored properties.