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Sun, Y. (author), Kang, Xuanwu (author), Deng, Shixiong (author), Zheng, Yingkui (author), Wei, Ke (author), Xu, Linwang (author), Wu, Hao (author), Liu, Xinyu (author)Gallium nitride (GaN) has attracted increased attention because of superior material properties, such as high electron saturation velocity and high electrical field strength, which are promising for high-power microwave applications. We report on a high-performance vertical GaN-based Schottky barrier diode (SBD) and its demonstration in a...journal article 2021
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An, Seongnam (author), Kang, Peter K. (author), Stuyfzand, Pieter Jan (author), Lee, Woonghee (author), Park, Saerom (author), Yun, Seong Taek (author), Lee, Seunghak (author)Various hydrogeochemical processes can modify the quality of river water during riverbank filtration (RBF). Identifying the subsurface processes responsible for the bank-filtered water quality is challenging, but essential for predicting water quality changes and determining the necessity of post-treatment. However, no systematic approach for...journal article 2021
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Wilkie, W. Keats (author), Fernandez, Juan M. (author), Stohlman, Olive R. (author), Schneider, Nigel R. (author), Dean, Gregory D. (author), Kang, Jin Ho (author), Warren, Jerry E. (author), Cook, Sarah M. (author), Heiligers, M.J. (author)An overview of the NASA Advanced Composite Solar Sail System (ACS3) technology demonstration project is presented. Descriptions of the ACS3 solar sail design, spacecraft systems, concept of operations, and ground testing are provided, along with a discussion of the extensibility of the ACS3 composite solar sail system technology to future...conference paper 2021
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Sun, Y. (author), Kang, Xuanwu (author), Zheng, Yingkui (author), Wei, Ke (author), Li, Pengfei (author), Wang, Wenbo (author), Liu, Xinyu (author), Zhang, Kouchi (author)The optimization of mesa etch for a quasi-vertical gallium nitride (GaN) Schottky barrier diode (SBD) by inductively coupled plasma (ICP) etching was comprehensively investigated in this work, including selection of the etching mask, ICP power, radio frequency (RF) power, ratio of mixed gas, flow rate, and chamber pressure, etc. In particular...journal article 2020
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Wang, Qidi (author), Yao, Zhenpeng (author), Zhao, Chenglong (author), Verhallen, T.W. (author), Tabor, Daniel P. (author), Liu, M. (author), Ooms, F.G.B. (author), Kang, Feiyu (author), Wagemaker, M. (author)Metallic lithium is a promising anode to increase the energy density of rechargeable lithium batteries. Despite extensive efforts, detrimental reactivity of lithium metal with electrolytes and uncontrolled dendrite growth remain challenging interconnected issues hindering highly reversible Li-metal batteries. Herein, we report a rationally...journal article 2020
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Li, M. (author), Wang, Mian (author), Kang, Jichuan (author), Sun, Liping (author), Jin, Peng (author)Operation and maintenance (O&M) costs account for a large proportion of the total costs for offshore wind energy. Performing a reasonable maintenance strategy is an effective approach to reduce O&M costs and gain more profits. In this paper, an opportunistic maintenance strategy for offshore wind turbine systems considering...journal article 2020
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Kang, E. (author), Tan, M. (author), An, J. (author), Chang, Z.Y. (author), Vince, Philippe (author), Sénégond, Nicolas (author), Mateo, Tony (author), Meynier, Cyril (author), Pertijs, M.A.P. (author)This article presents a low-noise transimpedance amplifier (TIA) designed for miniature ultrasound probes. It provides continuously variable gain to compensate for the time-dependent attenuation of the received echo signal. This time-gain compensation (TGC) compresses the echo-signal dynamic range (DR) while avoiding imaging artifacts...journal article 2020
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Public speaking training in front of an imaginary or virtual audience: A randomized controlled trialKang, N. (author), Ding, D. (author), Hartanto, D. (author), Brinkman, W.P. (author), Neerincx, M.A. (author)When preparing for a public speech, practicing with an audience is suggested to be effective in enhancing speech performance. However, it is often impractical to organize an audience to practice a presentation. Virtual reality can provide a solution, i.e., practicing with a virtual audience. This paper studied this practicing technique for...journal article 2019
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Sun, Y. (author), Kang, Xuanwu (author), Zheng, Yingkui (author), Lu, Jiang (author), Tian, Xiaoli (author), Wei, Ke (author), Wu, Hao (author), Wang, Wenbo (author), Liu, Xinyu (author), Zhang, Kouchi (author)Gallium nitride (GaN)-based vertical power Schottky barrier diode (SBD) has demonstrated outstanding features in high-frequency and high-power applications. This paper reviews recent progress on GaN-based vertical power SBDs, including the following sections. First, the benchmark for GaN vertical SBDs with different substrates (Si, sapphire, and...review 2019
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Fool, F. (author), Vos, H.J. (author), Shabanimotlagh, M. (author), Soozande, M. (author), Mozaffarzadeh, M. (author), Kim, T. (author), Kang, E. (author), Pertijs, M.A.P. (author), de Jong, N. (author), Verweij, M.D. (author)To accurately investigate the state of the carotid artery by the local haemodynamics and motion of the plaque using ultrasound, high-frame rate volumetric imaging is necessary. We have specifically designed a matrix array for this purpose. In this proceeding we will focus on imaging a volumetric flow profile using this matrix. For this...conference paper 2019
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Ma, Jiaming (author), Wei, Yinping (author), Gan, Lin (author), Wang, C. (author), Xia, Heyi (author), Lv, Wei (author), Li, Jia (author), Li, Baohua (author), Yang, Quan Hong (author), Kang, Feiyu (author), He, Yan Bing (author)It is a huge challenge for high-tap-density electrodes to achieve high volumetric energy density but without compromising the ionic transportation. Herein, we prepared compact Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> (LTO) microspheres consisting of densely packed primary nanoparticles. The real space distribution of lithium ions inside the...journal article 2019
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Kang, E. (author), Ding, Q. (author), Shabanimotlagh, M. (author), Kruizinga, P. (author), Chang, Z.Y. (author), Noothout, E.C. (author), Vos, H.J. (author), Bosch, J.W. (author), Verweij, M.D. (author), de Jong, N. (author), Pertijs, M.A.P. (author)This paper presents an ultrasound transceiver application-specific integrated circuit (ASIC) designed for 3-D ultrasonic imaging of the carotid artery. This application calls for an array of thousands of ultrasonic transducer elements, far exceeding the number of channels of conventional imaging systems. The 3.6 x 6.8 mm&#x00B2; ASIC...journal article 2018
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Kang, Z. (author), Yang, Juntao (author), Zhong, Ruofei (author), Wu, Yongxing (author), Shi, Zhenwei (author), Lindenbergh, R.C. (author)The digital mapping of road environment is an important task for road infrastructure inventory and urban planning. Automatic extraction and classification of pole-like objects can remarkably reduce mapping cost and enhance work efficiency. Therefore, this paper proposes a voxel-based method that automatically extracts and classifies three...journal article 2018
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Liu, Jikai (author), Gaynor, Andrew T. (author), Chen, Shikui (author), Kang, Zhan (author), Suresh, Krishnan (author), Takezawa, Akihiro (author), Li, Lei (author), Kato, Junji (author), Tang, Jinyuan (author), Wang, C.C. (author), Cheng, Lin (author), Liang, Xuan (author), To, Albert. C. (author)Manufacturing-oriented topology optimization has been extensively studied the past two decades, in particular for the conventional manufacturing methods, for example, machining and injection molding or casting. Both design and manufacturing engineers have benefited from these efforts because of the close-to-optimal and friendly-to-manufacture...journal article 2018
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Tang, Linkai (author), He, Yan Bing (author), Wang, Chao (author), Wang, Shuan (author), Wagemaker, M. (author), Li, Baohua (author), Yang, Quan Hong (author), Kang, Feiyu (author)Nanosized Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> (LTO) materials enabling high rate performance suffer from a large specific surface area and low tap density lowering the cycle life and practical energy density. Microsized LTO materials have high density which generally compromises their rate capability. Aiming at combining the favorable...journal article 2017
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Khoshelham, K. (author), Díaz-Vilarino, L. (author), Peter, M. (author), Kang, Z. (author), Acharya, D. (author)Automated generation of 3D indoor models from point cloud data has been a topic of intensive research in recent years. While results on various datasets have been reported in literature, a comparison of the performance of different methods has not been possible due to the lack of benchmark datasets and a common evaluation framework. The ISPRS...conference paper 2017
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Kang, Vitnarae (author), Groetelaers, D.A. (author)Regional governance is coming to play an increasingly pivotal role in the planning of housing development. It has been argued that an absence of formal accountability lines in regional governance is beneficial because it makes inter-municipal coordination more flexible, without the need for territorial adjustments in local authorities. However,...journal article 2017
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Qian, Kun (author), Tang, Linkai (author), Wagemaker, M. (author), He, Yan Bing (author), Liu, Dongqing (author), Li, Hai (author), Shi, Ruiying (author), Li, Baohua (author), Kang, Feiyu (author)Through a facile sodium sulfide (Na<sub>2</sub>S)-assisted hydrothermal treatment, clean and nondefective surfaces are constructed on micrometer-sized Li<sub>4</sub>Ti<sub>5</sub>O<sub>12</sub> particles. The remarkable improvement of surface quality shows a higher first cycle Coulombic efficiency (≈95%), a significantly enhanced cycling...journal article 2017
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Kang, N. (author)Whether we are talking about our research at a conference, making a speech at a friend’s wedding, or presenting a proposal in a businessmeeting,we have to speak in public from time to time. How well we deliver a presentation affects the way people think about us and our message. To deliver a well-received speech, preparation is necessary. Among...doctoral thesis 2016
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van der Spek, S.C. (author), Verbree, E. (author), Bon, M. (author), den Duijn, X.A. (author), Dukai, B. (author), Griffioen, S.J. (author), Kang, Y (author), Vermeer, M. (author)The distribution of people in buildings, the occupancy of lecture-, work- and study places and the accessibility of facilities are essential information at university campuses who have to cope with limited and even shrinking budgets and huge, rising real estate costs. Only little insight is gained in both occupancy and movement patterns with...conference paper 2016