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海上的量子钻石:使用多式特征和仿真对纳米钻石上石生长的化学见解

Perla J Sandoval¹, Karen Lopez¹, Andres Arreola¹

¹Department of Chemistry, San José State University, 1 Washington Square, San José, California 95192, United States.

ACS nanoscience Au

|December 25, 2023

概括

我们发现,在纳米级钻石 (ND) 表面上通过将碳酸转化为酒精来生长,从而使先进量子传感器的共价键成为可能. 这项研究澄清了在ND上形成的表面化学成分.

科学领域:

材料科学材料科学材料科学
量子技术量子技术是一种量子技术.
表面化学表面化学

背景情况:

钻石和纳米钻石 (ND) 对于量子计算和传感至关重要.
将钻石与二氧化接口是将量子位集成到各种设备中的关键.
在ND上启动增长的表面机制以前是未知的.

研究的目的:

为了阐明表面化学物质,负责钻石上的二氧化键形成.
为了研究钻石的电子结构变化与增加的二氧化厚度.
为了实现新型核心外量子传感器的设计.

主要方法:

修改的Stöber (Cigler) 方法用于合成NDs上的贝.
探测钻石表面化学和电子结构的X射线吸收光谱 (XAS).
电子显微镜用于表征钻石形态和表面.
表面分析电子光谱模拟 (SESSA) 用于XAS光谱的建模.

主要成果:

碳氧化NDs上的 (SiO2) 增长消除了碳氧酸,形成了富含酒精的表面.
一种涉及表面酒精和氧化的机制导致了-乙烯键的形成.
首次观察到,随着SiO2厚度的增加,钻石电子结构的抑制.
计算出的最大探测深度约为14nm.

结论:

这项研究揭示了在ND上形成二氧化外的表面化学机制.
在ND上的表面酒精组是通过乙烯链接形成共价键的关键.
这些发现可以指导使用钻石和其他材料开发新的分层或核心量子传感器.

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