Oliver A. Williams, Soumen Mandal, Jerome A. Cuenca
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引用次数: 0
摘要
材料的异质集成为许多极端应用提供了新的范例,在这些应用中,单一材料无法单独解决问题。金刚石具有大量超级特性,使其在各种应用中具有吸引力,例如无与伦比的热导率与高电阻抗的独特组合、室温下的单光子发射、超级声波速度和德拜温度。这些特性大多与金刚石原子致密的轻碳原子晶格直接相关,这就造成了金刚石 n 型掺杂困难和热膨胀系数低等后果。由于其他材料的线性热膨胀系数通常比金刚石大几倍,因此最后一项特性给在非金刚石材料上生长金刚石带来了严重问题。
The heterogeneous integration of materials offers new paradigms in many extreme applications, where single materials cannot solve the problem alone. Diamond has a plethora of superlative properties that make it attractive in a diverse array of applications, such as its unique combination of unrivalled thermal conductivity combined with high electrical impedance; single photon emission at room temperature; superlative acoustic wave velocity, and Debye temperature. Most of these properties are directly related to diamond’s atomically dense lattice of light carbon atoms, which has consequences such as difficulty in doping diamond n-type and low thermal coefficient of thermal expansion. This last property presents a significant problem for the growth of diamond on nondiamond materials as the linear coefficients of thermal expansion of other materials are often several times larger than diamond.