- document
-
Tang, Zhuorui (author), Gu, Lin (author), Jin, Lei (author), Dai, Kefeng (author), Mao, Chaobin (author), Wu, Sanzhong (author), Zhang, Rongwei (author), Yang, Jinsong (author), Zhang, Kouchi (author)In this work, 4H-SiC homoepitaxial layers were grown on 4°off-axis substrates at different susceptor rotation speeds by using a hot-wall horizontal CVD reactor. The effect of different susceptor rotation speed on the quality of 4H-SiC epitaxial layers in terms of thickness, thickness uniformity, crystallinity, surface morphology and...journal article 2024
- document
-
Zhang, Zhenya (author), Mao, Jia (author), Wei, Houyu (author), Cheng, Chuanxiao (author), Liu, Zhengxuan (author)Proton exchange membrane fuel cells offer promising clean energy solutions for various applications. However, their performance relies heavily on the properties of the microporous layer, which plays a crucial role in transporting and distributing the components in the fuel cell. To date, the potential for optimising the microporous layer...journal article 2024
- document
-
Yun, Minghui (author), Yang, Daoguo (author), Cai, Miao (author), Yan, Haidong (author), Yu, Jiabing (author), Liu, Mengyuan (author), He, Siliang (author), Zhang, Kouchi (author)Metal-oxide-semiconductor field-effect transistors (MOSFETs) undergo fatigue degradation under high thermal and electrical stresses. This process results in changes in their parasitic parameters, which can be detected using frequency domain reflectometry (FDR). Frequency domain impedance analysis is employed to characterize the various...journal article 2024
- document
-
Tang, Zhuorui (author), Zhao, Shibo (author), Li, Jian (author), Zuo, Yuanhui (author), Tian, Jing (author), Tang, Hongyu (author), Fan, J. (author), Zhang, Kouchi (author)This work addresses a novel technique for selecting the best process parameters for the 4H–SiC epitaxial layer in a horizontal hot-wall chemical vapor reactor using a transient multi-physical (thermal-fluid-chemical) simulation model and combined with a machine-learning model. An experiment was performed to validate the feasibility of the...journal article 2024
- document
-
Zhao, Y. (author), Wang, Xiao (author), Li, Quan an (author), Zhang, Xinyu (author), Li, Ye (author), Xie, Rong Jun (author), van Ommen, J.R. (author), Hintzen, H.T.J.M. (author)The cyan-emitting BaSi<sub>2</sub>O<sub>2</sub>N<sub>2</sub>:Eu<sup>2+</sup> phosphor is a promising narrow-band and high-efficiency luminescent material used in wide-color-gamut white light-emitting diodes (wLEDs). However, its serious degradation under thermal attacks hinders its practical applications and needs to be improved. Herein, we...journal article 2023
- document
-
Sattari, R. (author), van Zeijl, H.W. (author), Zhang, Kouchi (author)This study presents the design and fabrication of an in-package relative humidity sensor for epoxy molding compound (EMC) packages. The sensor comprises shielded interdigital electrodes (SIDE) for in-situ monitoring of humidity absorption/desorption in the package encapsulation layer. A novel approach is employed in the device fabrication to...conference paper 2023
- document
-
Ji, M. (author), Al-Ars, Z. (author), Hofstee, H.P. (author), Chang, Yuchun (author), Zhang, Baolin (author)Convolutional neural networks (CNNs) are to be effective in many application domains, especially in the computer vision area. In order to achieve lower latency CNN processing, and reduce power consumption, developers are experimenting with using FPGAs to accelerate CNN processing in several applications. Current FPGA CNN accelerators usually use...journal article 2023
- document
-
Zhang, F. (author), Wu, K. (author), La Zara, D. (author), Sun, F. (author), Quayle, Michael J. (author), Petersson, Gunilla (author), Folestad, Staffan (author), Chew, Jia Wei (author), van Ommen, J.R. (author)For dry powder inhaled formulations, good flow behaviour is vital in re-dispersing the powder. However, inhaled drug powders with a particle size below 10 µm are classified as highly cohesive materials with poor flow characteristics. Here we demonstrate how to alter the flow properties of micronized budesonide powders by depositing different...journal article 2023
- document
-
Zhang, Canlin (author), Dong, Hongjun (author), Yan, Zhengli (author), Yu, Meng (author), Wang, Ting (author), Xu, S. (author), Jiang, Zhenliang (author), Hu, Changbin (author)SBS-modified bitumen (SMB) is susceptible to aging, which seriously influences its service performance and life. In order to strengthen the anti-aging ability of SMB, triethoxyvinylsilane was designed to organically modify layered double hydroxides (LDHs) and was applied to modify SMB. The dispersibility and storage stability of LDHs in SMB...journal article 2021
- document
-
La Zara, D. (author), Zhang, F. (author), Sun, F. (author), Bailey, Maximilian R. (author), Quayle, Michael J. (author), Petersson, Gunilla (author), Folestad, Staffan (author), van Ommen, J.R. (author)The wettability of pharmaceuticals is a key physical property which influences their dissolution rate, dispersibility, flowability and solid-state stability. Here, we provide a platform of surface nanoengineering methods capable of tuning the wettability of drug powders from high hydrophilicity to superhydrophobicity with drug loadings up to...journal article 2021
- document
-
La Zara, D. (author), Sun, F. (author), Zhang, F. (author), Franek, Frans (author), Balogh Sivars, Kinga (author), Horndahl, Jenny (author), Bates, Stephanie (author), Brännström, Marie (author), van Ommen, J.R. (author)Ideal controlled pulmonary drug delivery systems provide sustained release by retarding lung clearance mechanisms and efficient lung deposition to maintain therapeutic concentrations over prolonged time. Here, we use atomic layer deposition (ALD) to simultaneously tailor the release and aerosolization properties of inhaled drug particles...journal article 2021
- document
-
Zhang, Ran (author), Mei, Ran Andy (author), Botto, L. (author), Yang, Zhongqiang (author)The nucleation and growth of liquid droplets on solid substrates have received much attention because of the significant relevance of these multiphase processes to both nature and practical applications. There have been extensive studies on the condensation of water from the air phase on solid substrates. Here, we focus on water diffusion...journal article 2020
- document
-
Cheng, Zhu (author), Liu, M. (author), Ganapathy, S. (author), Li, Z. (author), Zhang, Xiaoyu (author), He, Ping (author), Zhou, Haoshen (author), Wagemaker, M. (author), Li, Chau (author)The influence of space-charge layers on the ionic charge transport over cathode-solid electrolyte interfaces in all-solid-state batteries remains unclear because of the difficulty to unravel it from other contributions to the ion transport over the interfaces. Here, we reveal the effect of the space-charge layers by systematically tuning the...journal article 2020
- document
-
Li, Bo (author), Zhang, Shizhe (author), Li, Qiu (author), Li, Neng (author), Yuan, Bo (author), Chen, Wei (author), Brouwers, H.J.H. (author), Yu, Qingliang (author)The uptake mechanism of heavy metal ions in layered double hydroxides (LDHs) is investigated in this paper via solid-solution exchange experiments and first principle study. The uptake capacities of C-LDHs for heavy metal ions from solutions are experimentally investigated and the structures of LDHs doped with various heavy metal ions are...journal article 2019
- document
-
Zhang, Di (author), La Zara, D. (author), Quayle, Michael J. (author), Petersson, Gunilla (author), van Ommen, J.R. (author), Folestad, Staffan (author)The morphology, size, and surface properties of pharmaceutical particles form an essential role in the therapeutic performance of active pharmaceutical ingredients (APIs) and excipients as constituents in various drug delivery systems and clinical applications. Recent advances in methods for surface modification, however, rely heavily on...journal article 2019
- document
-
Zhang, Baocheng (author), Teunissen, P.J.G. (author), Yuan, Yunbin (author), Zhang, Hongxing (author), Li, Min (author)Vertical total electron content (VTEC) parameters estimated using global navigation satellite system (GNSS) data are of great interest for ionosphere sensing. Satellite differential code biases (SDCBs) account for one source of error which, if left uncorrected, can deteriorate performance of positioning, timing and other applications. The...journal article 2018
- document
-
Li, Y. (author), Han, Qinglin (author), Zhang, Guangjun (author), Horvath, I. (author)Robotic wire and arc additive manufacturing (WAAM) systems are required to provide predictable and efficient operations to fabricate solid metallic parts with high morphological fidelity and geometric accuracy. Since the metallic parts are fabricated based on a layer-by-layer principle, the interactions between the neighboring beads and...journal article 2018
- document
-
Xiao, Jing (author), Wei, Qi-Qin (author), Yang, Daoguo (author), Zhang, Ping (author), He, Ning (author), Zhang, Kouchi (author), Ren, Tian-Ling (author), Chen, Xian-Ping (author)The emerging field of nanophotonics requires plasmonic devices to be fully compatible with semiconductor fabrication techniques. However, very few feasible practical structures exist at present. Here, we propose a CMOS-compatible hybrid plasmonic slot waveguide (HPSW) with enhanced field confinement. Our simulation results show that the HPSW...journal article 2016
- document
-
Hrauda, N. (author), Zhang, J.J. (author), Stangl, J. (author), Rehman-Khan, A. (author), Bauer, G. (author), Stoffel, M. (author), Schmidt, O.G. (author), Jovanovich, V. (author), Nanver, L.K. (author)In this work self-organized SiGe islands are used as stressors for Si capping layers, which later act as carrier channels in field effect transistors. To be able to address individual islands and to obtain a sufficiently narrow distribution of their properties, the SiGe islands are grown by molecular beam epitaxy on prepatterned Si substrates,...journal article 2009