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Wang, W. (author)This thesis explores advanced computational techniques in super-resolution microscopy (SRM), with the primary goal of pushing the limits of achievable resolution towards the 1 nm scale. It includes developments in particle fusion algorithms, data analysis of complex biological structures, and exploration of the impact of molecular dipole...doctoral thesis 2024
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Wang, X. (author)In this thesis, fibre optic sensing has been investigated as an important technique for structural health monitoring. Distributed fibre optic sensing based on Rayleigh scattering is a fibre optic sensing technique to achieve the spatially continuous strain monitoring for critical locations for the structures. However, the Rayleigh backscattering...doctoral thesis 2023
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Ye, Hanting (author), Xiong, Jie (author), Wang, Q. (author)While radio communication still dominates in 5G, light and radios are expected to complement each other in the coming 6G networks. Visible Light Communication (VLC) is therefore attracting a tremendous amount of attention from both academia and industry. Recent studies showed that the front camera of pervasive smartphones is an ideal...conference paper 2023
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Dong, Xichao (author), Zhao, Zewei (author), Wang, Yupei (author), Wang, J. (author), Hu, Cheng (author)Nowadays deep learning-based weather radar echo extrapolation methods have competently improved nowcasting quality. Current pure convolutional or convolutional recurrent neural network-based extrapolation pipelines inherently struggle in capturing both global and local spatiotemporal interactions simultaneously, thereby limiting nowcasting...journal article 2022
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Zhao, Rui (author), Jiang, M. (author), Zhang, Shuoshuo (author), Man, Zhongsheng (author), Wang, Benyi (author), Ge, Xiaolu (author), Zhang, Wenfei (author), Zhang, Yuquan (author), Fu, Shenggui (author)A new type of radially polarized (RP) cosine-Gaussian (CG) field is proposed. Through the analytical model, it is found that such RP CG beam exhibits completely different focusing properties from the reported RP plane waves. More importantly, a stable three-dimensional trap of Rayleigh particle accompanied by a subwavelength spin motion can...journal article 2022
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Wang, X. (author), Benedictus, R. (author), Groves, R.M. (author)Strain-based structural health monitoring (SHM) relies on high performance strain sensing methods. Gold nanoparticle (NP) doped fibre optic sensors not only have the potential to increase the intensity of the backscattered signal to increase the signal to noise ratio but also have plasmon resonance peaks in the visible light range. The...journal article 2022
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Wang, X. (author), Benedictus, R. (author), Groves, R.M. (author)Optical fibre backscatter reflectometry is an important technique for Structural Health Monitoring (SHM). In recent years, increasing the intensity of backscattered light in backscatter reflectometry has shown the advantage of improving the signal detection in shape sensing and temperature detection due to the increase of signal to noise...journal article 2021
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Pearson, S.G. (author), Verney, Romaric (author), van Prooijen, Bram (author), Tran, Duc (author), Hendriks, H.C.M. (author), Jacquet, Matthias (author), Wang, Zhengbing (author)Quantifying and characterizing suspended sediment is essential to successful monitoring and management of estuaries and coastal environments. To quantify suspended sediment, optical and acoustic backscatter instruments are often used. Optical backscatter systems are more sensitive to mud particles (<63 μm) and flocs, whereas acoustic...journal article 2021
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Konings, Alexandra G. (author), Saatchi, Sassan S. (author), Frankenberg, Christian (author), Keller, Michael (author), Leshyk, Victor (author), Anderegg, William R.L. (author), Humphrey, Vincent (author), Steele-Dunne, S.C. (author), Wang, Yujie (author)Droughts in a warming climate have become more common and more extreme, making understanding forest responses to water stress increasingly pressing. Analysis of water stress in trees has long focused on water potential in xylem and leaves, which influences stomatal closure and water flow through the soil-plant-atmosphere continuum. At the...review 2021
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Nazeer, N. (author), Wang, Xuerui (author), Groves, R.M. (author)This paper presents a study on trailing edge deflection estimation for the SmartX camber morphing wing demonstrator. This demonstrator integrates the technologies of smart sensing, smart actuation and smart controls using a six module distributed morphing concept. The morphing sequence is brought about by two actuators present at both ends of...journal article 2021
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Zhang, Wenliang (author), Zhao, Qinghua (author), Munuera, Carmen (author), Lee, M. (author), Flores, Eduardo (author), van der Zant, H.S.J. (author), Wang, Tao (author), Frisenda, Riccardo (author), Castellanos-Gomez, Andres (author)Paper holds the promise to replace silicon substrates in applications like internet of things or disposable electronics that require ultra-low-cost electronic components and an environmentally friendly electronic waste management. In the last years, spurred by the abovementioned properties of paper as a substrate and the exceptional...journal article 2021
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Wang, X. (author), Benedictus, R. (author), Groves, R.M. (author)This study forms a part of the research in using nanoparticles (NPs) to increase the intensity of light scattering signal in the optical fibres. Increasing the intensity of the backscattered light signal in the optical fibres shows the potential to increase the signal-to-noise ratio in order to improve the sensitivity of the backscatter...conference paper 2021
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Zhong, Yuan (author), Xia, Mao (author), Chen, Zhi (author), Gao, Peixing (author), Hintzen, H.T.J.M. (author), Wong, Wai Yeung (author), Wang, Jing (author), Zhou, Zhi (author)Phosphors with high quantum efficiency and thermal stability are greatly desired for lighting industries. Based on the design strategy of solid solution, a series of deep-blue-emitting phosphors (Sr<sub>0.99-x</sub>Ba<sub>x</sub>)<sub>2</sub>P<sub>2</sub>O<sub>7</sub>:0.02Eu<sup>2+</sup> (SB<sub>x</sub>PE x = 0–0.5) are developed. Upon...journal article 2020
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Cecchetti, Leonardo (author), Wang, Tianshi (author), Hoogendoorn, Ayla (author), Witberg, Karen T. (author), Ligthart, Jurgen M.R. (author), Daemen, Joost (author), van Beusekom, Heleen M.M. (author), Pfeiffer, Tom (author), van der Steen, A.F.W. (author)To quantify the impact of cardiac motion on stent length measurements with Optical Coherence Tomography (OCT) and to demonstrate in vivo OCT imaging of implanted stents, without motion artefacts. The study consists of: clinical data evaluation, simulations and in vivo tests. A comparison between OCT-measured and nominal stent lengths in 101...journal article 2020
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López-Marín, Antonio (author), Springeling, Geert (author), Beurskens, Robert (author), Van Beusekom, Heleen (author), van der Steen, A.F.W. (author), Koch, Arjun D. (author), Bouma, Brett E. (author), Huber, Robert A. (author), Van Soest, Gijs (author), Wang, Tianshi (author)In this study, we demonstrate a 12x36 mm motorized capsule for OCT imaging of the esophagus. The capsule produces unobstructed images by using a distal reflector design, thus avoiding shadow caused by the motor wires. The motor synchronous control enables three working modes: circumferential imaging, angular sector imaging and accurate beam...conference paper 2020
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Lin, J. (author), He, Qing (author), Guo, Leicheng (author), van Prooijen, Bram (author), Wang, Zhengbing (author)Accurate measurement of suspended sediment concentration (SSC) in highly turbid environments has been a problem due to optical or acoustic signal saturation and attenuation. The saturation returns a limited measurement range, and the attenuation raises an ambiguity problem that a low optical or acoustic output could mean a low or a high SSC....journal article 2020
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Wang, X. (author), Benedictus, R. (author), Groves, R.M. (author)This study forms the first part of research into enhancing the forward and back scattering of light in an optical fibre using nanoparticles (NPs). This approach has the potential to enhance the sensitivity of optical fibre sensing by increasing the signal-to-noise ratio. The work described in this paper is focused on understanding the...conference paper 2020
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Wang, Q. (author), Giustiniano, Domenico (author), Zuniga, Marco (author)LEDs in our buildings, vehicles, and consumer products are rapidly gaining visible light communication capabilities. LED links however are notorious for being unreliable: shadowing, blockage, mobility, external light, all of these issues can disrupt the connectivity easily. Therefore, unless a reliable and cost-efficient data link layer is...journal article 2018
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Lee, M.J. (author), Ronchini Ximenes, A. (author), Padmanabhan, P. (author), Wang, Tzu Jui (author), Huang, Kuo Chin (author), Yamashita, Yuichiro (author), Yaung, Dun Nian (author), Charbon-Iwasaki-Charbon, E. (author)We present a high-performance back-illuminated three-dimensional stacked single-photon avalanche diode (SPAD), which is implemented in 45-nm CMOS technology for the first time. The SPAD is based on a P<sup>+</sup>/Deep N-well junction with a circular shape, for which N-well is intentionally excluded to achieve a wide depletion region, thus...journal article 2018
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Wang, Weizheng (author), Zhang, Junwei (author), Wang, Q. (author), Zuniga, Marco (author)Localization based on visible light is gaining significant attention. But most existing studies rely on a key requirement: the object of interest needs to carry an optical receiver (camera or photodiode). We remove this requirement and investigate the possibility of achieving accurate localization in a passive manner, that is, without...conference paper 2018
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