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Related Concept Videos

Recrystallization: Solid–Solution Equilibria01:10

Recrystallization: Solid–Solution Equilibria

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Recrystallization is a purification technique used to separate impurities from solid compounds. In this technique, no chemical reactions occur. Instead, it exploits physical properties only, specifically, the solubility differences between the desired compound and impurities, either at a single temperature or at different temperatures, and under other selected conditions. The solid-solution equilibrium (solubility equilibrium) of each component in the solution represents a binary phase...
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Crystal Growth: Principles of Crystallization01:25

Crystal Growth: Principles of Crystallization

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Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
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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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Precipitate Formation and Particle Size Control01:16

Precipitate Formation and Particle Size Control

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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.
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Precipitation Processes01:12

Precipitation Processes

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The experimental conditions in a gravimetric analysis should be optimized to maximize the particle size and purity of the obtained precipitate. Ideally, the concentration of the precipitating reagent should be low with effective stirring to maintain low relative supersaturation for the growth of large crystals. In homogeneous precipitation, the precipitant is slowly generated by a chemical reaction in the solution to avoid local reagent excesses. For example, urea decomposes gradually to...
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Air-entraining Agents01:27

Air-entraining Agents

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Air-entraining agents improve the durability and workability of concrete in climates with frequent freezing and thawing. These agents prevent cracks by introducing small air bubbles into the mix, creating spaces accommodating water expansion when temperatures drop. The air-entraining agents lower the surface tension of water, forming stable, small air bubbles. This method is more effective than having accidental large voids, as the intentional, smaller, and evenly distributed air voids improve...
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Updated: Aug 1, 2025

A Microfluidic Approach for the Study of Ice and Clathrate Hydrate Crystallization
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Engineered Compounds to Control Ice Nucleation and Recrystallization.

Nishaka William1, Sophia Mangan2, Rob N Ben2

  • 1Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Alberta, Canada;

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Summary
This summary is machine-generated.

Controlling ice formation is crucial for subzero storage of biological materials. Nature provides mechanisms, now mimicked by accessible compounds for advanced biopreservation and cryobiology applications.

Keywords:
antifreeze (glyco)proteinice nucleationice recrystallizationthermal hysteresis

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Area of Science:

  • Cryobiology
  • Biopreservation
  • Materials Science

Background:

  • Controlling ice nucleation and recrystallization is a major challenge in subzero storage of cells, tissues, and organs.
  • Freeze-avoidant and freeze-tolerant organisms exhibit natural mechanisms for surviving sub-physiologic freezing temperatures.
  • Decades of research have led to the development of compounds and materials that mimic these natural cryoprotective processes.

Purpose of the Study:

  • To review the current state of biopreservation techniques.
  • To highlight the advancements in cryobiology inspired by natural antifreeze proteins.
  • To discuss the synergistic potential of new materials and cryobiology developments.

Main Methods:

  • Review of scientific literature on cryobiology and biopreservation.
  • Analysis of natural mechanisms in freeze-avoidant and freeze-tolerant organisms.
  • Examination of synthetic compounds and materials mimicking natural cryoprotection.

Main Results:

  • Identification of accessible compounds and materials capable of controlling ice formation.
  • Demonstration of mechanisms recapitulating natural biopreservation strategies.
  • Synergistic interactions between novel materials and existing cryobiology techniques.

Conclusions:

  • Advancements in materials science offer new possibilities for controlling ice formation in biopreservation.
  • Mimicking natural cryoprotective mechanisms is a promising avenue for improving cell, tissue, and organ storage.
  • The integration of these novel approaches with current cryobiology practices presents significant opportunities for the field.