Article
Chemistry, Analytical
Iresha Erangani Piyarathna, Ahmed Mostafa Thabet, Mustafa Ucgul, Charles Lemckert, Yee Yan Lim, Zi Sheng Tang
Summary: This study proposed a novel multimode harvester design named the arc-shaped branch beam harvester (ASBBH), which achieved a broader operating bandwidth and significantly higher effectiveness, in comparison with conventional cantilever beam harvesters (CBH).
Article
Optics
Loic Tabourin, Denis Brousseau, Simon Thibault, Tigran Galstian
Summary: This study investigates the capability of an electrically tunable liquid crystal lens (TLCL) to dynamically generate various wavefront shapes. The influence functions and crosstalk between them are characterized by adjusting voltage and frequency of electrical signals. The obtained results are important for designing adaptive optical systems that require dynamic wavefront control.
Article
Physics, Applied
Houyuan Cheng, Dong Yang, Lina Hua, Youcheng Wang, Helin Yang, Jiong Wu, Yujun Li
Summary: The proposed compact antipodal Vivaldi antenna with metamaterial half-lens allows for three different beam forms and beam scanning by adjusting operating frequency. Simulation results show that the antenna has wide impedance bandwidth and gain bandwidth, with an improved gain in the working band.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Multidisciplinary
Huanhuan Gao, Xiaojun Huang, Xiongwei Ma, Xiaoyan Li, Linyan Guo, Helin Yang
Summary: The Pancharatnam-Berry (PB) phase metasurface, a special type of gradient metasurface, has received much attention for its robust performance in phase control of circularly polarized waves. In this study, an element-based polarizer is proposed to convert incident electromagnetic waves into cross-polarized waves, achieving a relative bandwidth of 71% and a polarization conversion ratio exceeding 90% at 6.9-14.5 GHz. Furthermore, an eight-element coding polarizer based on the PB phase is presented for applications in beam control and radar cross section reduction, with simulated results showing a radar cross section reduction of over 10 dB at 6-16 GHz. Our work demonstrates the feasibility of manipulating waves, beamforming in communication systems, and achieving electromagnetic stealth.
FRONTIERS OF PHYSICS
(2023)
Article
Polymer Science
Molla R. Islam, Rachel Nguyen, Louis Andrew Lyon
Summary: The study found that ultra-soft microgels with extremely low crosslinking can form stable colloidal packing under controlled osmotic pressure, and coexistence of hexagonal and square lattices can also be observed in lower ranges. The unique packing behavior is attributed to the extreme softness of these particles, which lead to deformation and shrinking during deswelling, resulting in packing states governed by contributions to the entropy at various levels. Further experimental and theoretical studies are needed for a complete understanding of the behavior of ultra-soft microgels in packed and confined geometries.
MACROMOLECULAR RAPID COMMUNICATIONS
(2021)
Article
Ophthalmology
Peter I. Kenny, Karim Kozhaya, Paulina Truong, Mitchell P. Weikert, Li Wang, Warren E. Hill, Douglas D. Koch
Summary: This study compared the predictive accuracy of newer intraocular lens (IOL) power calculation formulas using traditional and segmented axial length (AL) measurements. The results showed that the ZEISS AI formula performed better than other formulas in terms of accuracy.
JOURNAL OF CATARACT AND REFRACTIVE SURGERY
(2023)
Article
Chemistry, Physical
Zbynek Strecker, Filip Jenis, Michal Kubik, Ondrej Machacek, Seung-Bok Choi
Summary: This article discusses suitable techniques and materials for designing an ultra-fast magnetorheological valve, exploring two approaches for achieving short response times through material and shape design. Simulation and experimental results confirm that using materials such as Sintex SMC prototyping and ferrite N87, along with grooved metal pistons, can achieve a response time of less than 2.5 ms.
Article
Engineering, Mechanical
Andrija Zoric, Marina Trajkovic-Milenkovic
Summary: In this paper, a semi-analytical solution is proposed to solve the problem of elastoplastic deflection of prismatic fixed-end beams with circular cross-section loaded by lateral displacement at one end. The proposed solution is applicable to homogeneous and isotropic beams with bilinear elastoplastic strain hardening behavior. The reliability of the solution is confirmed by comparing it with finite element analysis results and experimental results. Furthermore, a parametric study is conducted to investigate the influence of geometric parameters and material characteristics on the mechanical properties of the beams.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
(2023)
Article
Computer Science, Information Systems
Mika Ruutiainen, Hamid Roozbahani, Marjan Alizadeh, Heikki Handroos, Antti Salminen
Summary: The objective of this study was to develop a novel real-time monitoring and control method for ultra-fast laser scribing processes utilizing spectrometer. An online monitoring system was established using the Ocean Optics spectrometer, IPG ytterbium pulsed laser, and PXIe-8880 industrial computer. An algorithm for real-time control of the laser scribing process was developed based on the monitoring outcomes using LabVIEW software. The reliability of the developed monitoring system and control algorithm was evaluated through experimental methods.
Article
Engineering, Chemical
Tong Zhang, Jianping Li, Aosong Wei, Junjun Huang, Shihao Li, Jun Huan, Faquan Wang, Hualin Wang
Summary: This study proposed a method for ultra-clean separation of micro-particle contaminants using mini-hydrocyclones with overflow microchannels. By controlling the width of the overflow microchannels, the adverse effects of short-flow can be significantly reduced, leading to efficient separation. Experimental results showed that this method can greatly decrease the concentration and quantity of micro-particle contaminants in lubricating oil, achieving the cleanliness requirements of international standards and demonstrating excellent technical-economic performance.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Ocean
Zhixin Zhao, Wenhua Wang, Dongdong Han, Wei Shi, Yulin Si, Xin Li
Summary: The study proposes a braceless semi-submersible floating platform for moderate water depths and a servo control system for a semi-submersible floating offshore wind turbine (FOWT), and investigates a fore-aft tuned mass damper (TMD) for vibration alleviation. By establishing a simplified dynamic model and optimizing the TMD parameters, the vibration suppression performance of the optimized design for the 10-MW semi-submersible FOWT is verified.
JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING-TRANSACTIONS OF THE ASME
(2021)
Article
Optics
Sinuo An, Ying Shi, Zao Yi, Chao Liu, Tao Sun, Jingwei Lv, Lin Yang, Paul K. Chu
Summary: A simple nematic liquid crystal-filled dual-core photonic crystal fiber polarization beam splitter with high extinction ratio and wide bandwidth has been designed, showing great potential for use in miniaturized communication devices.
OPTICAL ENGINEERING
(2021)
Article
Engineering, Civil
Zhe Wang, Filippo Ubertini, Simon Laflamme
Summary: A critical challenge in structural control is the design of controllers that can rapidly adapt to uncertainties. The authors propose a fast neuro-controller capable of pure online learning, using an ensemble of ERNNs based on LSTM cells. The controller has advantages of rapid online adaptation, capability to adapt to local dynamics, and pure online learning architecture.
ENGINEERING STRUCTURES
(2022)
Article
Optics
Junbo Lou, Yonghui Yang, Xinhe Zhang, Qiang Qu, Shuguang Li
Summary: A circular ultra-short As2S3 filled double-core photonic crystal fiber polarization beam splitter is proposed, and its performance is studied using the finite element method. By optimizing geometric parameters, the splitting length can be as short as 72.43 μm, and the extinction ratio can reach -151.42 dB. Due to its high extinction ratio, extremely short beam splitting function, and simple structure, this polarization beam splitter has significant potential in all-optical networks and optical device preparation.
Article
Pharmacology & Pharmacy
Yamin Gao, H. M. Adnan Hameed, Yang Liu, Lingmin Guo, Cuiting Fang, Xirong Tian, Zhiyong Liu, Shuai Wang, Zhili Lu, Md Mahmudul Islam, Tianyu Zhang
Summary: TB47-containing regimens have shown promising results in curing Buruli ulcer quickly and effectively, as well as preventing the emergence of drug resistance. Additionally, the discovery of double QcrB mutations could guide potential clinical molecular diagnosis of resistance and the development of new drugs.
ACTA PHARMACEUTICA SINICA B
(2021)
Article
Optics
Chenghao Feng, Richard Soref, Ray T. Chen, Xiaochuan Xu, Wei Jiang
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2018)
Article
Engineering, Electrical & Electronic
Rui Zhu, Xin Zhou, Nan Yang, Lemeng Leng, Wei Jiang
IEEE PHOTONICS JOURNAL
(2018)
Article
Engineering, Electrical & Electronic
Daojing Zhai, Rui Zhu, Yogesh Jaluria, Wei Jiang
IEEE PHOTONICS TECHNOLOGY LETTERS
(2019)
Article
Optics
Robert Gatdula, Siamak Abbaslou, Ming Lu, Aaron Stein, Wei Jiang
Article
Optics
Peiyan Zhao, Zhaobang Zeng, Nan Yang, Qianyi Gao, Bo Tang, Zhihua Li, Jiang Yan, Wei Jiang
Article
Engineering, Electrical & Electronic
Lemeng Leng, Minfeng Jin, Zhongzhi Lin, Chenbin Zhang, Ding Ding, Wei Jiang
IEEE PHOTONICS JOURNAL
(2020)
Article
Physics, Applied
Le-Meng Leng, Yue Shao, Pei-Yan Zhao, Guang-Fan Tao, Shi-Ning Zhu, Wei Jiang
Summary: High-density low-crosstalk waveguide superlattices can help shrink the pitch of optical phased arrays to half-wavelength, balancing transverse and longitudinal coherence to achieve ideal beam characteristics. Large supercells offer more design freedom for finding desirable superlattice structures.
PHYSICAL REVIEW APPLIED
(2021)
Article
Chemistry, Multidisciplinary
Zhaobang Zeng, Ding Ding, Qianyi Gao, Nan Yang, Peiyan Zhao, Wei Jiang
Summary: Research characterizes the correlation between reflection and modulation characteristics, finding a decrease in correlation at higher bit rates. Device physics analysis reveals how nanoscale variation of material properties affects the performance of modulation devices.
Article
Optics
Zhaobang Zeng, Lemeng Leng, Peiyan Zhao, Chenbin Zhang, Ding Ding, Dun Mao, Tingyi Gu, Wei Jiang
Summary: In a parallel-coupled dual-racetrack modulator, interference between resonant light in two resonators is utilized to achieve high extinction ratios for high-speed modulation. The modulator also enables the generation of four-level pulse-amplitude modulation without an external DAC.
Article
Optics
Lemeng Leng, Zhaobang Zeng, Guihan Wu, Zhongzhi Lin, Xiang Ji, Zhiyuan Shi, Wei Jiang
Summary: Phase calibration for optical phased arrays is a key process. Traditional iterative optimization algorithms are tedious, while deep-learning-based technology offers an alternative, though phase ambiguities severely affect accuracy.
PHOTONICS RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Minfeng Jin, Guihan Wu, Xin Zhou, Qiuyang Jiang, Zhongzhi Lin, Wei Jiang
Summary: We propose and experimentally demonstrate a Mach-Zehnder silicon thermo-optic switch based on a parabolic multimode interference coupler. The parabolic structure is designed to achieve extremely small imbalance of output power and good fabrication tolerance. In experiment, high average extinction ratios over 35 dB and maximum values over 40 dB can be achieved from 1520 nm to 1580 nm. The proposed parabolic MMI has a small footprint of only 2.4 μm x 9.5 μm.
IEEE PHOTONICS TECHNOLOGY LETTERS
(2023)
Proceedings Paper
Instruments & Instrumentation
Zhongzhi Lin, Minfeng Jin, Chenbin Zhang, Ding Ding, Liang Zhang, Nan Yang, Yechao Bai, Wei Jiang
OPTOELECTRONIC DEVICES AND INTEGRATION IX
(2020)
Proceedings Paper
Engineering, Electrical & Electronic
Zhaobang Zeng, Peiyan Zhao, Nan Yang, Qianyi Gao, Bo Tang, Zhihua Li, Jiang Yan, Wei Jiang
2020 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO)
(2020)
Proceedings Paper
Optics
Peiyan Zhao, Zhaobang Zeng, Nan Yang, Bo Tang, Zhihua Li, Jiang Yan, Xiangning Chen, Wei Jiang
ELEVENTH INTERNATIONAL CONFERENCE ON INFORMATION OPTICS AND PHOTONICS (CIOP 2019)
(2019)
Proceedings Paper
Nanoscience & Nanotechnology
Ying Wang, Xin Zhou, Qian Chen, Yue Shao, Xiangning Chen, Qingzhong Huang, Wei Jiang
2017 INTERNATIONAL CONFERENCE ON OPTICAL INSTRUMENTS AND TECHNOLOGY - MICRO/NANO PHOTONICS: MATERIALS AND DEVICES
(2017)