Colloidal quantum dots. From scaling laws to biological applications
Colloidal quantum dots. From scaling laws to biological applications
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DOI：
10.1351/pac200072010003
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发表时间：
2000-01-01
影响因子：
1.8
通讯作者：
Alivisatos, P
中科院分区：
文献类型：
--
作者：
Alivisatos, P
二十年来，凝聚态物理学家和物理化学家阐明了一系列标度定律，成功描述了固态特性的尺寸依赖性[1,2]。通常，这些实验是在有些奇异的条件下进行的，例如在分子束中隔离的质量选择簇上或在通过分子束外延生长并在低温和高磁场下进行询问的量子点上进行。因此，我们现在了解了热力学、光学、电学和磁学特性如何从原子演化到固态极限。该研究领域目前正在经历显着的转变。比例定律以前是研究的直接主题，现在为先进新材料的设计提供了工具。就胶体量子点或半导体纳米晶体而言，这些新见解有望对远离固态物理学的学科产生影响[3]。
Over a twenty-year period, condensed matter physicists and physical chemists have elucidated a series of scaling laws which successfully describe the size dependence of solid state properties [1,2]. Often the experiments were performed under somewhat exotic conditions, for instance on mass-selected clusters isolated in molecular beams or on quantum dots grown by molecular beam epitaxy and interrogated at low temperatures and in high magnetic fields. As a result, we now have an understanding of how thermodynamic, optical, electrical, and magnetic properties evolve from the atomic to the solid state limit. This area of research is presently undergoing a remarkable transformation. The scaling laws, previously the direct subject of research, now provide a tool for the design of advanced new materials. In the case of colloidal quantum dots, or semiconductor nanocrystals, these new insights are poised to have impact in disciplines remote from solid state physics [3].