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Nitin NAMPALLI,Tsun Hang FUNG,Stuart WENHAM,Brett HALLAM,Malcolm ABBOTT
《能源前沿(英文)》 2017年 第11卷 第1期 页码 4-22 doi: 10.1007/s11708-016-0442-6
关键词: Czochralski silicon boron-oxygen defect injection dependent lifetime spectroscopy goodness-of-fit repeatability error
《化学科学与工程前沿(英文)》 2023年 第17卷 第11期 页码 1755-1764 doi: 10.1007/s11705-023-2318-8
关键词: oxygen evolution reaction porous carbon nanosheets Co nanoparticles edge-induced topological defects Zn–air batteries
Mohammad SALAVATI, Arvin MOJAHEDIN, Ali Hossein Nezhad SHIRAZI
《结构与土木工程前沿(英文)》 2020年 第14卷 第3期 页码 623-631 doi: 10.1007/s11709-020-0616-5
关键词: hexagonal boron-nitride mechanical properties crack notch point defects molecular dynamics
An industrial solution to light-induced degradation of crystalline silicon solar cells
Meng XIE,Changrui REN,Liming FU,Xiaodong QIU,Xuegong YU,Deren YANG
《能源前沿(英文)》 2017年 第11卷 第1期 页码 67-71 doi: 10.1007/s11708-016-0430-x
关键词: Boron-oxygen defects c-Si solar cells light-induced degradation passivation forward bias
Tomographic diagnosis of defects in hydraulic concrete structure
ZHAO Mingjie, XU Xibin
《结构与土木工程前沿(英文)》 2008年 第2卷 第3期 页码 226-232 doi: 10.1007/s11709-008-0027-5
关键词: satisfactory processing orientation tomographic diagnosis orientation perpendicular
Synthesis of boron modified CoMo/Al
Hui Shang, Chong Guo, Pengfei Ye, Wenhui Zhang
《化学科学与工程前沿(英文)》 2021年 第15卷 第5期 页码 1088-1098 doi: 10.1007/s11705-020-1969-y
关键词: CoMo catalyst boron modification surface acidity microwave heating selective hydrodesulfurization
Automated classification of civil structure defects based on convolutional neural network
Pierclaudio SAVINO, Francesco TONDOLO
《结构与土木工程前沿(英文)》 2021年 第15卷 第2期 页码 305-317 doi: 10.1007/s11709-021-0725-9
关键词: concrete structure infrastructures visual inspection convolutional neural network artificial intelligence
双氧原子掺杂的氮化硼材料用于吸附脱硫研究 Article
罗静, 魏延臣, 巢艳红, 王超, 李宏平, 熊君, 华明清, 李华明, 朱文帅
《工程(英文)》 2022年 第14卷 第7期 页码 86-93 doi: 10.1016/j.eng.2020.08.030
氧原子普遍共存于六方氮化硼(h-BN)吸附剂中。如何利用h-BN中的氧原子以强化其与吸附质之间的相互作用,从而提高材料的吸附性能,是一个亟待解决课题。本文以聚合法构建氧原子晶格内部取代和边缘羟基化修饰的双氧原子位点改性BN(BN‒2O)材料。BN‒2O的边缘羟基氧原子能够增强二苯并噻吩(DBT)与其非均匀表面的π-π作用,从而促进多分子层型吸附过程。实验结果表明,相比边缘羟基取代BN(BN‒OH)材料,BN‒2O材料对燃油中DBT的吸附容量提升了12%。密度泛函理论计算还揭示了BN‒2O晶格内部的氧原子可以通过极化吸附质的方式增强其与BN‒2O之间的偶极作用,进一步提高BN‒2O从富含芳烃的燃油中选择性吸附DBT的能力,使得其在燃油吸附脱硫领域表现出更好的应用前景。吸附结果符合Freundlich模型和准二级动力学模型结果。因此,该聚合法同样可被应用于其他杂原子掺杂体系以提升吸附剂的吸附性能。
Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation
《化学科学与工程前沿(英文)》 2023年 第17卷 第11期 页码 1718-1727 doi: 10.1007/s11705-023-2319-7
关键词: PDI boron nitride quantum dots photocatalysis hole transfer
Thermal reffusivity: uncovering phonon behavior, structural defects, and domain size
Yangsu XIE, Bowen ZHU, Jing LIU, Zaoli XU, Xinwei WANG
《能源前沿(英文)》 2018年 第12卷 第1期 页码 143-157 doi: 10.1007/s11708-018-0520-z
关键词: thermal reffusivity theory phonon behavior structure defects structural thermal domain (STD) size 2D material amorphous material
Determining casting defects in near-net shape casting aluminum parts by computed tomography
Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 48-52 doi: 10.1007/s11465-018-0493-y
Three types of near-net shape casting aluminum parts were investigated by computed tomography to determine casting defects and evaluate quality. The first, second, and third parts were produced by low-pressure die casting (Al-12Si-0.8Cu-0.5Fe-0.9Mg-0.7Ni-0.2Zn alloy), die casting (A356, Al-7Si-0.3Mg), and semi-solid casting (A356, Al-7Si-0.3Mg), respectively. Unlike die casting (second part), low-pressure die casting (first part) significantly reduced the formation of casting defects (i.e., porosity) due to its smooth filling and solidification under pressure. No significant casting defect was observed in the third part, and this absence of defects indicates that semi-solid casting could produce high-quality near-net shape casting aluminum parts. Moreover, casting defects were mostly distributed along the eutectic grain boundaries. This finding reveals that refinement of eutectic grains is necessary to optimize the distribution of casting defects and reduce their size. This investigation demonstrated that computed tomography is an efficient method to determine casting defects in near-net shape casting aluminum parts.
关键词: near-net shape casting aluminum parts casting defects low pressure die casting die casting semi-solid casting computed tomography
Water-soluble BODIPY and aza-BODIPY dyes: synthetic progress and applications
Gang FAN,Le YANG,Zhijian CHEN
《化学科学与工程前沿(英文)》 2014年 第8卷 第4期 页码 405-417 doi: 10.1007/s11705-014-1445-7
关键词: boron-dipyrromethene boron-azadipyrromethene synthetic progress applications
Detection of solder bump defects on a flip chip using vibration analysis
Junchao LIU, Tielin SHI, Qi XIA, Guanglan LIAO
《机械工程前沿(英文)》 2012年 第7卷 第1期 页码 29-37 doi: 10.1007/s11465-012-0314-7
Flip chips are widely used in microelectronics packaging owing to the high demand of integration in IC fabrication. Solder bump defects on flip chips are difficult to detect, because the solder bumps are obscured by the chip and substrate. In this paper a nondestructive detection method combining ultrasonic excitation with vibration analysis is presented for detecting missing solder bumps, which is a typical defect in flip chip packaging. The flip chip analytical model is revised by considering the influence of spring mass on mechanical energy of the system. This revised model is then applied to estimate the flip chip resonance frequencies. We use an integrated signal generator and power amplifier together with an air-coupled ultrasonic transducer to excite the flip chips. The vibrations are measured by a laser scanning vibrometer to detect the resonance frequencies. A sensitivity coefficient is proposed to select the sensitive resonance frequency order for defect detection. Finite element simulation is also implemented for further investigation. The results of analytical computation, experiment, and simulation prove the efficacy of the revised flip chip analytical model and verify the effectiveness of this detection method. Therefore, it may provide a guide for the improvement and innovation of the flip chip on-line inspection systems.
关键词: flip chip defect detection ultrasonic excitation vibration analysis
Diagnosis of sewer pipe defects on image recognition of multi-features and support vector machine in
Xiangyang Ye, Jian’e Zuo, Ruohan Li, Yajiao Wang, Lili Gan, Zhonghan Yu, Xiaoqing Hu
《环境科学与工程前沿(英文)》 2019年 第13卷 第2期 doi: 10.1007/s11783-019-1102-y
An image-recognition-based diagnosis system of pipe defect types was established. 1043 practical pipe images were gathered by CCTV robot in a southern Chinese city. The overall accuracy of the system is 84% and the highest accuracy is 99.3%. The accuracy shows positive correlation to the number of training samples.
关键词: Sewer pipe defects Defect diagnosing Image recognition Multi-features extraction Support vector machine
标题 作者 时间 类型 操作
Statistical analysis of recombination properties of the boron-oxygen defect in p-type Czochralski silicon
Nitin NAMPALLI,Tsun Hang FUNG,Stuart WENHAM,Brett HALLAM,Malcolm ABBOTT
期刊论文
“Charging” the cigarette butt: heteroatomic porous carbon nanosheets with edge-induced topological defectsfor enhanced oxygen evolution performance
期刊论文
Mechanical responses of pristine and defective hexagonal boron-nitride nanosheets: A molecular dynamics
Mohammad SALAVATI, Arvin MOJAHEDIN, Ali Hossein Nezhad SHIRAZI
期刊论文
An industrial solution to light-induced degradation of crystalline silicon solar cells
Meng XIE,Changrui REN,Liming FU,Xiaodong QIU,Xuegong YU,Deren YANG
期刊论文
Automated classification of civil structure defects based on convolutional neural network
Pierclaudio SAVINO, Francesco TONDOLO
期刊论文
Improving hole transfer of boron nitride quantum dots modified PDI for efficient photodegradation
期刊论文
Thermal reffusivity: uncovering phonon behavior, structural defects, and domain size
Yangsu XIE, Bowen ZHU, Jing LIU, Zaoli XU, Xinwei WANG
期刊论文
Determining casting defects in near-net shape casting aluminum parts by computed tomography
Jiehua LI, Bernd OBERDORFER, Daniel HABE, Peter SCHUMACHER
期刊论文
Water-soluble BODIPY and aza-BODIPY dyes: synthetic progress and applications
Gang FAN,Le YANG,Zhijian CHEN
期刊论文
Detection of solder bump defects on a flip chip using vibration analysis
Junchao LIU, Tielin SHI, Qi XIA, Guanglan LIAO
期刊论文