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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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Colloids and Suspensions01:17

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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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Colloidal precipitates01:09

Colloidal precipitates

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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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Base Excision Repair01:54

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One of the common DNA damages is the chemical alteration of single bases by alkylation, oxidation, or deamination. The altered bases cause mispairing and strand breakage during replication. This type of damage causes minimal change to the DNA double helix structure and can be repaired by the base excision repair (BER) pathways. BER corrects damaged DNA sequences by removing the damaged base and restoring the original base sequence using the complementary strand as a template.
The first step of...
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Lewis Acids and Bases02:33

Lewis Acids and Bases

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In 1923, G. N. Lewis proposed a generalized definition of acid-base behavior in which acids and bases are identified by their ability to accept or to donate a pair of electrons and form a coordinate covalent bond.
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DNA Base Pairing02:27

DNA Base Pairing

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Erwin Chargaff’s rules on DNA equivalence paved the way for the discovery of base pairing in DNA. Chargaff’s rules state that in a double-stranded DNA molecule,
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Wearable sensors based on colloidal nanocrystals.

Woo Seok Lee1, Sanghyun Jeon1, Soong Ju Oh2

  • 1Department of Materials Science and Engineering, Korea University, Seoul, 02841, Republic of Korea.

Nano Convergence
|April 3, 2019
PubMed
Summary

Nanocrystals (NCs) offer tunable properties for advanced wearable sensors. This review covers NC synthesis, fabrication, and applications in strain, pressure, and temperature sensing, addressing current limitations.

Keywords:
NanocrystalsPressure sensorsStrain sensorsTemperature sensorsWearable devices

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Sensor Technology

Background:

  • Wearable sensors are gaining prominence in diverse fields, driving innovation in bio-integrated devices, healthcare, and robotics.
  • Nanocrystals (NCs) are emerging as key components for novel wearable sensors due to their processability and adaptable characteristics.

Purpose of the Study:

  • To provide a comprehensive overview of Nanocrystal (NC) synthesis, thin-film fabrication, and functionalization for wearable applications.
  • To review recent advancements in NC-based strain, pressure, and temperature sensors, detailing their operational principles and strategies.
  • To discuss existing limitations in NC-based wearable sensors and propose potential solutions.

Main Methods:

  • Review of Nanocrystal (NC) synthesis techniques.
  • Analysis of Nanocrystal (NC) thin-film fabrication methods.
  • Functionalization strategies for Nanocrystals (NCs) in sensor applications.

Main Results:

  • Nanocrystals (NCs) demonstrate significant potential for developing high-performance wearable sensors.
  • Review of NC-based strain, pressure, and temperature sensors highlights diverse operating principles and design strategies.
  • Identification of current challenges and future directions for Nanocrystal (NC) wearable sensor technology.

Conclusions:

  • Nanocrystals (NCs) are versatile materials for advanced wearable sensor development.
  • Further research is needed to overcome limitations and fully realize the potential of NC-based wearable sensors.
  • The review provides valuable insights for researchers and industry professionals in the field of wearable electronics.