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Method To Directly Measure and Actively Control a Single Nucleation-Crystal Growth Process

机译:直接测量和主动控制单个成核晶体生长过程的方法

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摘要

Nucleation and subsequent phase transitions exist broadly in nature and engineered processes, from ice formation to protein crystallization and beyond. The lack of capable methods to analyze and to control the dynamic heterogeneous process is a fundamental problem, and constitutes overwhelming technical challenges in synthesizing crystalline structures with designed/predictable properties. By actively controlling mass transport through a single nano pipette, the extent of supersaturation is adjusted kinetically in a confined space immediately outside the nanopore. Using protein insulin as prototype, the formation of a single atto-femto-liter droplet, subsequent nucleation inside and further growth of a single crystal, is monitored electrically and optically, and actively controlled by an external electrical field. The generalizable method, referred to as nanoAC for nanoscale active control, not just provides fundamental insights at unprecedented single entity resolution, it enables active in situ control of growth of the newly formed phase locally around an individual precursor.
机译:成核和随后的相转变在自然界和工程化过程中广泛存在,从冰形成到蛋白质结晶和超出。缺乏能力的分析方法和控制动态异质过程是一个基本问题,并且构成了在合成具有设计/可预测性质的结晶结构方面的技术挑战。通过通过单个纳米移液管主动地控制质量传输,在纳米孔外立即在狭窄的空间中进行过饱和的程度。使用蛋白质胰岛素作为原型,在电气和光学和光学和光学上监测单个毫微微升液滴,随后的内部成核和进一步生长的单个晶体,并由外部电场主动控制。推广的方法称为纳米CAC用于纳米级活性控制,而不仅仅为前所未有的单一实体分辨率提供了基本洞察力,它能够在各个前体周围地原位控制新形成的相位的生长。

著录项

  • 来源
    《Crystal growth & design》 |2019年第4期|共6页
  • 作者单位

    Georgia State Univ Dept Chem Atlanta GA 30302 USA;

    Georgia State Univ Dept Chem Atlanta GA 30302 USA;

    Georgia State Univ Dept Chem Atlanta GA 30302 USA;

    Georgia State Univ Dept Chem Atlanta GA 30302 USA;

    Georgia State Univ Dept Chem Atlanta GA 30302 USA;

    Georgia State Univ Dept Chem Atlanta GA 30302 USA;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 晶体学;
  • 关键词

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