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Related Concept Videos

Colloids03:22

Colloids

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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 that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
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Control Systems: Applications01:25

Control Systems: Applications

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Electrical engineering plays a pivotal role in our daily lives, with control systems at the heart of many applications, from home appliances to sophisticated space shuttles. Control systems manage and regulate the behavior of devices and processes, ensuring they function safely, correctly, and efficiently.
In modern vehicles, control systems manage various functions to enhance performance and safety. The steering wheel and accelerator are primary inputs in a car's control system. The...
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Colloids and Suspensions01:17

Colloids and Suspensions

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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...
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Membrane Asymmetry Regulating Transporters01:19

Membrane Asymmetry Regulating Transporters

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Enzymes like flippase, floppase, and scramblase transfer phospholipids from one layer to another in the membrane, thereby affecting membrane asymmetry.
Flippase
Eukaryotic flippases are type-IV P-type ATPases or P4-ATPases belonging to P-type ATPase family proteins that are membrane-bound pumps involved in the ATP-mediated transport of ions and molecules across the membrane. Flippases flip specific phospholipids from the outer to the inner leaflet of a membrane. All P4-ATPases have one...
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Colloidal precipitates01:09

Colloidal precipitates

6.5K
The high insolubility of some precipitates can result in an unfavorable relative supersaturation. This can lead to colloidal particles with a large surface-to-mass ratio, where adsorption is promoted. For instance, in the precipitation of silver chloride, silver ions are adsorbed on the surface of the colloidal particles, forming a primary layer. This layer attracts ions of opposite charge (such as nitrate ions), forming a diffuse secondary layer of adsorbed ions. This electric double layer...
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Transfer Function in Control Systems01:21

Transfer Function in Control Systems

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The transfer function is a fundamental concept in the analysis and design of linear time-invariant (LTI) systems. It offers a concise way to understand how a system responds to different inputs in the frequency domain. It serves as a bridge between the time-domain differential equations that describe system dynamics and the frequency-domain representation that facilitates easier manipulation and analysis.
To derive the transfer function, consider a general nth-order linear time-invariant...
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A Versatile Automated Platform for Micro-scale Cell Stimulation Experiments
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A versatile colloidal Janus platform: surface asymmetry control, functionalization, and applications.

Chengjiao Wu1, Ziwei Deng1, Bin Shang1

  • 1Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shannxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Laboratory for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China. zwdeng@snnu.edu.cn.

Chemical Communications (Cambridge, England)
|October 26, 2018
PubMed
Summary
This summary is machine-generated.

Researchers developed an easy method to create Janus particles with adjustable properties using silane mixtures, Pickering emulsions, and polydopamine chemistry. This versatile technique allows for diverse applications and tunable particle asymmetry.

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Synthesis and Characterization of Supramolecular Colloids
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Synthesis and Characterization of Supramolecular Colloids
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Area of Science:

  • Materials Science
  • Colloid Chemistry
  • Nanotechnology

Background:

  • Janus particles, with distinct properties on each hemisphere, are crucial for advanced applications.
  • Existing synthesis methods often lack versatility or control over asymmetry and functionality.

Purpose of the Study:

  • To develop a facile and versatile synthetic route for silica (SiO2)-based Janus particles.
  • To demonstrate tunable asymmetry and introduce diverse functionalities onto these particles.

Main Methods:

  • Utilizing a combination of silane mixtures for surface modification.
  • Employing Pickering emulsions as a template for particle formation.
  • Leveraging polydopamine chemistry for versatile functionalization.

Main Results:

  • Successfully synthesized colloidal SiO2-based Janus particles with controlled asymmetry.
  • Demonstrated the introduction of multiple, distinct functionalities onto the particle surfaces.
  • Confirmed the generic applicability of the developed synthetic concept.

Conclusions:

  • The integrated approach offers a straightforward and adaptable method for Janus particle fabrication.
  • The tunable nature and diverse functionalities position these particles for broad application potential.