Article
Materials Science, Multidisciplinary
Yonglin He, Weimin Yang, Tien-Mo Shih, Jingyu Wang, Dumeng Zhang, Min Gao, Fangfei Jiao, Yue Zeng, Jing-Liang Yang, Junhong Pang, Renxian Gao, Guoya Sun, Ming-De Li, Jian-Feng Li, Zhilin Yang
Summary: An anomaly in the relationship between sample reflectance and pump-light polarization angle is discovered at the localized surface plasmons mode, while normal relationships exist at the interband transition and the propagating surface plasmon polaritons mode. By intentionally acquiring electrical-field enhancements and identifying the anomaly-governing mechanism as the aggregation of hot electrons, this discovery can be applied to ultrafast all-optical communications, computing, and photonics-related device design.
ADVANCED OPTICAL MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Matz Liebel, Franco V. A. Camargo, Giulio Cerullo, Niek F. van Hulst
Summary: Scientists have successfully addressed the challenge in the field of nanoscale imaging by combining concepts of ultrafast spectroscopy, wide-field nanoscopy, and digital holography. They have introduced an ultrafast holographic transient microscope for wide-field transient nanoscale imaging and demonstrated time-resolved spectroscopy of gold nanoparticles.
Article
Chemistry, Multidisciplinary
Anton Yu. Bykov, Yuanyang Xie, Alexey V. Krasavin, Anatoly V. Zayats
Summary: In this study, the optically driven acoustic modes and nonlinear response of multilayered spherical plasmonic hetero-nanoparticles were investigated. These nanoparticles, composed of alternating layers of gold and silica, exhibited a broadband nonlinear optical response from visible to near-infrared wavelengths. Additionally, they served as a tunable optomechanical system with mechanically decoupled layers, allowing for selective switching of different acoustic modes by tuning the excitation wavelength. These findings not only enhance our understanding of the internal structure of composite plasmonic nanoparticles but also provide an additional degree of freedom for controlling their nonlinear optical and mechanical properties.
Article
Chemistry, Multidisciplinary
Maria Sygletou, Stefania Benedetti, Marzia Ferrera, Gian Marco Pierantozzi, Riccardo Cucini, Giuseppe Della Valle, Pietro Carrara, Alessandro De Vita, Alessandro di Bona, Piero Torelli, Daniele Catone, Giancarlo Panaccione, Maurizio Canepa, Francesco Bisio
Summary: The femtosecond evolution of the electronic temperature of laser-excited gold nanoparticles was measured using ultrafast time-resolved photoemission spectroscopy induced by extreme-ultraviolet radiation pulses. The results provided a direct and unambiguous picture of the ultrafast electron-gas dynamics, contributing to the refinement of existing models and deeper understanding of the role of hot electrons in technological applications.
Article
Engineering, Electrical & Electronic
Jitendra Nath Acharyya, Narayana Rao Desai, R. B. Gangineni, G. Vijaya Prakash
Summary: This study demonstrates ultrafast absorption dynamics and enhanced features of photonic modes in a one-dimensional photonic crystal embedded with barium titanate (BaTiO3, BTO). The transient absorption behavior and nonlinear absorption dynamics reveal the excited-state absorption dynamics of BTO defect energies and the enormous cavity field confinement effect. The strong optical nonlinearities and enhanced features offer insights into electron-photon interaction, opening up possibilities for novel nonlinear, hybrid optoelectronic, and photonic device applications.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Michalis Stavrou, Aristeidis Stathis, Ioannis Papadakis, Alina Lyuleeva-Husemann, Emmanouel Koudoumas, Stelios Couris
Summary: This study reports on the transient nonlinear optical responses of two different types of 2D silicon nanosheets. The results demonstrate the importance of chemical functionalization for the efficient enhancement and tailoring of the NLO properties of these Si-based materials, and reveal that the silicon nanosheets exhibit larger NLO responses compared to graphene nanosheets.
Article
Optics
Yibiao Hu, Zhan Yang, Tianju Zhang, Chenduan Chen, Zixin Wang, Ningning Dong, Jun Wang
Summary: In this work, the nonlinear optical properties of Nb4C3Tx are investigated, and it is found that the nanosheets exhibit saturable absorption response in the visible to near-infrared region. The ultrafast carrier dynamics indicate a high optical modulation speed. An all-optical modulator is demonstrated using Nb4C3Tx nanosheets. The study suggests that Nb4C3Tx is a potential material for nonlinear devices.
Article
Chemistry, Physical
Mahmoud Abdelfatah, Osama H. Basyouni, Walid Ismail, Abdelhamid El-Shaer
Summary: In this study, tetrafluoro-tetracyanoquinodimethane (F4TCNQ), a strong p-type molecular dopant, was used for the first time to achieve efficient surface charge transfer doping (SCTD) of bismuthene. The interaction between bismuthene and F4TCNQ molecules resulted in improved p-type conductivity and nonlinear optical properties. These findings demonstrate the potential of SCTD for tuning the electronic and optical characteristics of bismuthene in various devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Optics
Ambaresh Sahoo, Andrea Marini, Samudra Roy
Summary: In this study, a theoretical model for infrared pulse propagation in graphene-covered hybrid waveguides is developed based on first principles. Electron dynamics in graphene and radiation propagation are described by Bloch equations and a generalized nonlinear Schrodinger equation, respectively. Numerical simulations show that Kerr solitons accelerate and experience a strong self-induced spectral blueshift, which is fully explained by semianalytical predictions.
Article
Chemistry, Multidisciplinary
Hang Jiang, Yuanan Zhao, Hao Ma, Yi Wu, Meiling Chen, Mengxia Wang, Weili Zhang, Yujie Peng, Yuxin Leng, Zhaoliang Cao, Jianda Shao
Summary: An ultrafast all-optical switch based on enhanced nonlinear absorption of corrugated indium tin oxide (ITO) thin films is proposed. The switch achieves broad-band, polarization-independent, and wide-angle characteristics by taking advantage of the perfect absorption and localized field enhancement of epsilon-near-zero and localized surface plasmon resonance modes.
Article
Nanoscience & Nanotechnology
Michalis Stavrou, Nikolaos Chazapis, Vasileios Arapakis, Vasilios Georgakilas, Stelios Couris
Summary: Hematene and magnetene nanoplatelets were synthesized from hematite and magnetite ores using a green synthesis method and dispersed in water. These non-vdW 2D materials showed strong saturable absorption and Kerr-type nonlinear refractive index, suggesting potential applications in photonics and optoelectronics.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Nikhil Puthiya Purayil, Chandrasekharan Keloth
Summary: In this study, the linear and nonlinear optical behavior of cobalt phthalocyanine (CoPc) in the combined local fields of plasmonic and photonic cavity modes were investigated. A planar microcavity was created using polymeric layers and embedded with CoPc/Au nanocomposites. The strong field strengths caused by the cavity photon-plasmon coupling significantly enhanced the nonlinear optical absorption of CoPc. The proposed system can act as an angle-tunable nonlinear optical switch with potential applications in photonics.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Engineering, Electrical & Electronic
Landen D. Rydere, Ronald D. Schrimpf, Robert A. Reed, Sharon M. Weiss
Summary: A computationally efficient method for estimating the impact of carrier distribution on the optical signal in a waveguide is presented. The method is incorporated into a carrier transport solver, allowing the modeling of the optical response as carriers diffuse within the waveguide. The study shows that the transmission of the optical signal sharply drops when an ionizing particle passes through the waveguide, partially recovers in picoseconds, and continues to recover as carriers recombine or escape.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2022)
Article
Optics
Shuang Chen, Ruipeng Niu, Yachen Gao, Wenfa Zhou, Kun Liu, Yuxiao Wang, Yinglin Song, Xueru Zhang
Summary: The process and condition of saturable absorption (SA) and reverse saturable absorption (RSA) in metal nanoparticles play a crucial role in applications such as light generation, amplification, modulation, and switching. This study discovers and explores the multiple transformations of ultrafast nonlinear absorption behavior in metal nanoparticles and establishes an energy level model and fitting formula to illustrate the optical response process. The results indicate that gold nanobipyramids (Au-NBPs) exhibit a significantly higher SA modulation depth and offer new opportunities for optical switching applications.
Article
Nanoscience & Nanotechnology
L. M. Jagathpriya, Jayakumar Pillanagrovi, Shourya Dutta-Gupta
Summary: Surface-enhanced Raman spectroscopy (SERS) has been effectively used in biosensing applications by enhancing the coupling of light into plasmonic nanostructures. In this study, cavity-coupled structures are demonstrated to improve SERS performance by enhancing the light-matter interaction. The fabricated substrates show nearly a 9 times improvement in SERS enhancement compared to uncoupled substrates, and the cavity-coupling approach can also enhance other plasmonic phenomena.
Article
Computer Science, Artificial Intelligence
Kaiwen Dong, Yanjing Sun, Xiaozhou Cheng, Xiaolin Wang, Bin Wang
Summary: In this paper, the authors propose a structure-context complementary network (SCC-Net) for human pose estimation, which consists of an enhanced attention mechanism and an atrous convolution-based module. The proposed modules, namely cross-coordinate attention bottleneck (CCAB) and waterfall residual atrous pooling (WRAP), improve the performance of body joint detection by addressing challenges such as occlusion and background confusion. The experimental results on benchmark datasets demonstrate the effectiveness of the proposed modules and the holistic SCC-Net.
APPLIED INTELLIGENCE
(2023)
Article
Environmental Sciences
Fenghua Li, Xianqi Zhao, Yanni Jiao, Xinglan Duan, Lianlong Yu, Fengjia Zheng, Xiaolin Wang, Lin Wang, Jia-Sheng Wang, Xiulan Zhao, Tianliang Zhang, Wei Li, Jun Zhou
Summary: This study analyzed the exposure level and health risks of aflatoxins (AFs) and zearalenone (ZEA) through cooking oil consumption in Shandong, China. The findings showed that children are facing the highest health risk, and liver cancer incidence is associated with exposure to aflatoxins.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Electrical & Electronic
Dehui Wu, Shibin Lin, Hongfu Chen, Xiaohong Wang
Summary: An analytical model for calculating the mutual inductance between coplanar rectangular spiral coils was developed in this study. The model is applicable to PCB-based spiral coils in eddy-current testing probes and can simplify the calculation process while maintaining accuracy.
INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS
(2023)
Article
Biochemistry & Molecular Biology
Xiaoli Wang, Bo Yuan, Ning Zhu, Rongrong Mu, Hongli Zheng, Changsheng Shao, Yanyan Zhao, Jun Mei, Dongliang Yu, Liping Ke, Yuqiang Sun, Cai Fangfang
Summary: This study further investigated the expression pattern and promoter characteristics of GhLAR1, a critical enzyme in the synthesis pathway of proanthocyanidins in cotton fibers. The results showed that GhLAR1 was strongly expressed in fibers and flowers, with significantly higher expression levels in brown cotton compared to white cotton. The GhLAR1 promoter contained light response elements and defense-related transcription factor-binding boxes, which may explain its response to temperature, NaCl, and PEG treatments.
MOLECULAR BIOTECHNOLOGY
(2023)
Article
Polymer Science
Xin-Xin Zhi, Hua-Sen Wang, Jie Jia, Xiao-Lei Wang, Yan-Shuang Ga, Shu-Jing Chen, Jin-Gang Liu
Summary: In this study, alignment agents derived from different poly(amic acid)s (PAAs) were prepared and applied to the fabrication of liquid crystal (LC) minicells. The polyimides (PI) alignment layers obtained from the thermal dehydration reaction of the PAA precursors showed good alignment effects to the LC molecules and exhibited good optoelectronic features.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2023)
Letter
Surgery
Weili Feng, Anqi Lu, Daoqiang Huang, Xiaoping Wang
ASIAN JOURNAL OF SURGERY
(2023)
Article
Psychiatry
Yu Gu, Huijuan Guo, Jiansong Zhou, Xiaoping Wang
Summary: This study investigated the socio-demographic, clinical, and offense-related characteristics of mentally ill offenders in a forensic psychiatric hospital in China. The majority of the participants were male, unmarried, and had sought medical help for their mental illnesses prior to their offenses. Schizophrenia was the most common diagnosis, and homicide offenses were prevalent, with family members being the most common victims.
Article
Engineering, Civil
Muhammad Mannan Afzal, Xiaolei Wang, Lin Sun, Ting Jiang, Qingkai Kong, Yi Luo
Summary: Glaciers of different dimensions in the Karakoram region respond differently to climate change. The Open Global Glacier Model was used to quantify these variabilities in the Hunza basin and understand how glaciers respond to past and future climate change. The results indicate a negative mass balance and accelerated glacier retreat in recent years. Monthly glacier runoff is sensitive to summer temperature, but glacier runoff per unit area remains consistent across glacier classes. Future climate change scenarios suggest significant volume loss for small and large glaciers, impacting basin runoff. Immediate mitigation measures are needed for long-term water security in the region.
JOURNAL OF HYDROLOGY
(2023)
Article
Automation & Control Systems
Kezhen Han, Jian Feng, Yueyang Li, Ping Jiang, Xiaohong Wang
Summary: This article presents new improvements to the relevant constrained predictive fault-tolerant tracking control (FTTC) methods through embedding optimal preview regulation and reference governance, optimizing robust tracking performance and enlarging fault-tolerant admissible region.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Genetics & Heredity
Liangcheng Yu, Lu Wang, Lijin Wang, Song Yan, Shuqiang Chen, Qian Xu, Danjie Su, Xiaohong Wang
Summary: This study aims to identify the association between immune cell types, immune-related genes, and recurrent implantation failure (RIF) through bioinformatics analysis. Differentially expressed genes (DEGs) were screened, and enrichment analysis and protein-protein interaction (PPI) analysis were conducted. The RIF-associated immune cell types were clarified, and differentially expressed immune cell types-related modules were identified. Three immune-related hub genes were identified and validated, and a ceRNA network was constructed.
FRONTIERS IN GENETICS
(2023)
Article
Environmental Sciences
Yue Ma, Lin Wang, Nan Xu, Shiyi Zhang, Xiao Hua Wang, Song Li
Summary: Coastal slope is a crucial factor in understanding hydrodynamic and morphological processes, estimating extreme water levels, coastline erosion, and coastal vulnerability. However, accurate estimation of coastal slopes is limited, especially in sparsely populated and remote areas. This study demonstrates the potential of ICESat-2 measurements to estimate coastal slope, with promising results obtained in Texas, USA. The improved accuracy of ICESat-2 derived coastal slopes compared to current large-scale slopes derived from other sources suggests the method's applicability at a global scale.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Xiaohong Wang, Guiying Du, Yao Liu
Summary: The study found that lateral meniscal body extrusion (LMBE) is associated with progression of OA-related knee structural damage over 4 years, and identified thresholds for predicting this progression.
EUROPEAN JOURNAL OF RADIOLOGY
(2023)
Article
Immunology
Genwei Zhang, Guodong Niu, Diana Hooker-Romera, Sadeq Shabani, Julian Ramelow, Xiaohong Wang, Noah S. Butler, Anthony A. James, Jun Li
Summary: In this study, antibodies against human alpha-tubulin were found to significantly reduce the number of P. falciparum oocysts in mosquito midguts. Further investigation revealed that antibodies specifically against P. falciparum alpha-tubulin-1 also limited the transmission of P. falciparum to mosquitoes. Mouse monoclonal antibodies against recombinant P. falciparum alpha-tubulin-1 were generated, and two of them, A3 and A16, effectively blocked parasite transmission.
FRONTIERS IN CELLULAR AND INFECTION MICROBIOLOGY
(2023)
Proceedings Paper
Automation & Control Systems
Yan Ming, Wang Jiaxing, Li Heqi, Liu Kai
Summary: This article proposes a neural network based direct lift landing control method for carrier-based aircraft, aiming at optimizing the control parameters in the landing control phase. By introducing neural network into the direct force loop, the controller parameters are optimized online to improve the convergence speed. Simulation experiments with the interference of deck motion, carrier air wake, and Monte Carlo pull deviation condition are performed, and the results show that the trajectory correction speed of the ship-based aircraft direct lift landing control based on neural network is faster, with smaller overshoot and higher accuracy.
PROCEEDINGS OF 2022 INTERNATIONAL CONFERENCE ON AUTONOMOUS UNMANNED SYSTEMS, ICAUS 2022
(2023)
Proceedings Paper
Energy & Fuels
Fan Yang, Xiaohong Wang, Haishan Guo, Hemin Yang, Zhixin Huo, Youzong Jian, Jing Hu
Summary: This paper proposes a direct AC-AC modular multilevel converter called Hexverter, which is based on cascaded full-bridge sub-modules and is suitable for connecting two systems operating at different frequencies. However, the operating range of Hexverter is limited by the capacitor voltage of the sub-modules. To address this issue, a strategy based on optimal neutral voltage and circulating current is proposed to limit the capacitor voltage within a specific range and minimize switching loss. Simulation results confirm that this strategy effectively suppresses the magnitude of the capacitor ripple voltage and reduces switching loss.
PROCEEDINGS OF THE 3RD INTERNATIONAL SYMPOSIUM ON NEW ENERGY AND ELECTRICAL TECHNOLOGY
(2023)
