Diamond sensors for extreme environments

适用于极端环境的金刚石传感器

• 批准号: 1784903
• 金额: --
• 依托单位: University College London
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2016
• 资助国家: 英国
• 起止时间: 2016 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-1784903
• 关键词: Diamond; sensors; extreme; environments

Diamond is wasted as a gemstone; it is actually a wide band-gap semiconductor withmany superior electronic properties to conventional materials such as silicon. It ischemically inert in terms of the bulk, but the surface can be surface chemicallyfunctionalized to adjust its properties. It shows a greater "electrochemical window"- the voltage that can be supported before unwanted aqueous redox reactions set in- than other materials. Add its mechanical, acoustic, optical and thermal properties,it is a unique material for the realization of active sensors for gaseous and liquidspecies in extreme environments. The oil industry relies on a range of 'down-well'sensors particularly for well logging use. High pressures, temperatures andaggressive chemical environments down an oil well make most materials unsuitablefor use as sensors - diamond is being actively pursued as a solution to this problem.This PhD programme will involve the development of novel chemical and opticalsensing approaches to be implemented with diamond. Diamond surfacefunctionalization and subsequent electrochemistry is likely to feature throughout.Semiconductor 'clean-room' processing technologies will be used to fabricate testdevices for subsequent evaluation.

钻石作为宝石被浪费了；它实际上是一种宽带隙半导体，具有许多优于硅等传统材料的电子特性。就本体而言，它是化学惰性的，但表面可以进行表面化学功能化以调整其性能。与其他材料相比，它显示出更大的“电化学窗口”——在不需要的水性氧化还原反应发生之前可以支持的电压。加上其机械、声学、光学和热学特性，它是一种独特的材料，用于实现极端环境下气体和液体物质的有源传感器。石油工业依赖于一系列“井下”传感器，特别是用于测井的传感器。油井下的高压、高温和腐蚀性化学环境使大多数材料不适合用作传感器 - 人们正在积极寻求金刚石作为这一问题的解决方案。该博士项目将涉及开发用金刚石实现的新型化学和光学传感方法。金刚石表面功能化和随后的电化学可能贯穿始终。半导体“洁净室”加工技术将用于制造用于后续评估的测试设备。

项目成果

Diamond Electrodes for High Sensitivity Mercury Detection in the Aquatic Environment: Influence of Surface Preparation and Gold Nanoparticle Activity

• DOI: 10.1002/elan.201900281
• 发表时间: 2019-09-01
• 期刊: ELECTROANALYSIS
• 影响因子: 3
• 作者: McLaughlin, Maeve H. S.;Pakpour-Tabrizi, Alexander C.;Jackman, Richard B.
• 通讯作者: Jackman, Richard B.

Influence of temperature on the electrochemical window of boron doped diamond: a comparison of commercially available electrodes.

• DOI: 10.1038/s41598-020-72910-x
• 发表时间: 2020-09-24
• 期刊: Scientific reports
• 影响因子: 4.6
• 作者: McLaughlin MHS;Corcoran E;Pakpour-Tabrizi AC;de Faria DC;Jackman RB
• 通讯作者: Jackman RB