Functional Diamond最新文献_第7页

Recent progress in diamond radiation detectors 金刚石辐射探测器的最新进展

Functional Diamond Pub Date : 2021-01-02 DOI: 10.1080/26941112.2021.2017758

T. Shimaoka, S. Koizumi, J. H., Kaneko

{"title":"Recent progress in diamond radiation detectors","authors":"T. Shimaoka, S. Koizumi, J. H., Kaneko","doi":"10.1080/26941112.2021.2017758","DOIUrl":"https://doi.org/10.1080/26941112.2021.2017758","url":null,"abstract":"Abstract This paper reviews recent progress in diamond radiation detectors. Diamond is an ultra-wide gap (5.5 eV) semiconducting material which has several ideal properties for radiation detectors, such as solar blindness, high temperature operation, and fast response. Furthermore, diamond has near tissue-equivalence due to its low atomic number (Z = 6) and chemical stability due to its strong covalent bonds. Because of these features, diamond has long been used as a radiation detector in the fields of nuclear engineering, nuclear fusion, high energy physics and medical therapy. Until the 1990s, most of the research was conducted using selected high purity natural diamonds. Since the 2000s, the detector characteristics of synthetic diamond detectors have been greatly improved by achieving high purity diamond by microwave plasma enhanced chemical vapor deposition (CVD). Single-crystal CVD diamonds present best characteristics for spectroscopy in diamond radiation detectors. For applications requiring large sensitive areas, polycrystalline CVD diamond is mostly used. Heteroepitaxial diamond detectors are a promising alternative to increase the area of spectroscopic diamond radiation detectors. For applications in extreme environments, high radiation flux which leads to polarization effects is a crucial issue. Even with diamond, which has excellent radiation hardness, degradation of detector characteristics due to irradiation is inevitable. Detectors designed with small carrier travel distances, such as membrane diamond detectors and three-dimensional diamond radiation detectors, are effective ways to mitigate the degradation.","PeriodicalId":367894,"journal":{"name":"Functional Diamond","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114062665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Progress of structural and electronic properties of diamond: a mini review 金刚石的结构和电子特性研究进展

Functional Diamond Pub Date : 2021-01-02 DOI: 10.1080/26941112.2021.1956287

Hongchao Yang, Yandong Ma, Ying Dai

引用次数: 12

Correlation of the role of boron concentration on the microstructure and electrochemical properties of diamond electrodes 硼浓度对金刚石电极微观结构和电化学性能影响的相关性研究

Functional Diamond Pub Date : 2021-01-02 DOI: 10.1080/26941112.2021.2017759

Yinhao Chen, Xiaolei Gao, Guoshuai Liu, Ruitong Zhu, Wanlin Yang, Zhishen Li, Fang Liu, K. Zhou, Zhiming Yu, Qiu-ping Wei, Li Ma

引用次数: 8

Emerging applications of nanodiamonds in photocatalysis 纳米金刚石在光催化中的新应用

Functional Diamond Pub Date : 2021-01-02 DOI: 10.1080/26941112.2020.1869431

Li-Xia Su, Yu Cao, Haoshan Hao, Qi Zhao, Jinfang Zhi

引用次数: 10

Application of high-thermal-conductivity diamond for space phased array antenna 高导热金刚石在空间相控阵天线中的应用

Functional Diamond Pub Date : 2021-01-02 DOI: 10.1080/26941112.2021.1996211

Wei Lu, Jin Li, Jianyin Miao, Liang-xian Chen, Junjun Wei, Jinlong Liu, Chengming Li

{"title":"Application of high-thermal-conductivity diamond for space phased array antenna","authors":"Wei Lu, Jin Li, Jianyin Miao, Liang-xian Chen, Junjun Wei, Jinlong Liu, Chengming Li","doi":"10.1080/26941112.2021.1996211","DOIUrl":"https://doi.org/10.1080/26941112.2021.1996211","url":null,"abstract":"Abstract Active phased array antenna typically featured high performance, high device integration, and high heat flux, making it difficult to dissipate heat. Diamond, the substance with the closest arrangement of atoms in nature, has the advantages of a high thermal conductivity and strong adaptability to the space environment. The batch applications of high-thermal-conductivity diamonds for the thermal management of the phased array antennas of the inter-satellite links were introduced in this paper. The diamond was developed by the direct-current arc-plasma chemical vapor deposition method. The product size, thermal conductivity, precision, and application scale all met the engineering requirements. The high-precision assembly of the diamond and the structural frame enabled the efficient heat collection and transfer from the distributed point heat sources of multiple transmit/receive (T/R) modules. Verified on the ground, the thermal matching design between the diamond and the metal frame exhibited an outstanding heat dissipation performance. After four satellites using the diamonds were launched, the flight data showed good antenna thermal control, with temperature gradients of the T/R modules less than 2.2 °C, further verifying the rationality and effectiveness of using high-thermal-conductivity diamonds in the thermal design and implementation of antennas.","PeriodicalId":367894,"journal":{"name":"Functional Diamond","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128280740","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Epitaxial lateral growth of single-crystal diamond under high pressure by a plate-to-plate MPCVD 单晶金刚石高压外延横向生长的片对片MPCVD

Functional Diamond Pub Date : 2021-01-02 DOI: 10.1080/26941112.2021.1947750

W. Cao, Deng Gao, Hongyang Zhao, Zhibin Ma

{"title":"Epitaxial lateral growth of single-crystal diamond under high pressure by a plate-to-plate MPCVD","authors":"W. Cao, Deng Gao, Hongyang Zhao, Zhibin Ma","doi":"10.1080/26941112.2021.1947750","DOIUrl":"https://doi.org/10.1080/26941112.2021.1947750","url":null,"abstract":"Abstract The epitaxial lateral growth of single-crystal diamond (SCD) using a plate-to-plate microwave plasma chemical vapor deposition (MPCVD) reactor under high pressure is investigated. The radicals’ distribution in H2/CH4 plasma as a function of pressure was locally detected by optical emission spectroscopy (OES). Raman spectroscopy and optical microscope were employed to analyze the properties of SCD deposited in different pressure. The OES results show that radicals’ distribution along the substrate direction is symmetrical under 20 kPa pressure. The symmetrical distribution of radicals at 20 kPa is in favor of epitaxial lateral growth SCD around the seed and without polycrystalline diamond (PCD) rim. When the pressure is increased to 21.5 kPa, the optical emission spectra center of plasma shifts close to the microwave reflector where is far away from the microwave source. The contact state between the diamond seed and the plasma is deteriorated and the PCD rim occurs in the plasma uncovered area. While the epitaxial lateral growth pattern occurs in the plasma covered area and the lateral growth rate of this region improves with the increase of pressure. A higher growth rate does not result in good quality; meanwhile, the diamond growth step spacing and direction become inconsistent in the transition zone as a function of pressure increasing. Finally, the overall effective lateral expansion area does not increase with the improvement of pressure. Therefore, the uniform and symmetrical distributed plasma is more conducive to the epitaxial lateral growth of SCD, and the effective expansion growth SCD can be realized at 20 kPa.","PeriodicalId":367894,"journal":{"name":"Functional Diamond","volume":"395 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115317619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Properties, mechanism and applications of diamond as an antibacterial material 金刚石抗菌材料的性能、机理及应用

Functional Diamond Pub Date : 2021-01-02 DOI: 10.1080/26941112.2020.1869434

Aude Cumont, A. Pitt, P. Lambert, M. Oggioni, H. Ye

引用次数: 18