Article
Chemistry, Physical
Myles C. Silfies, Grzegorz Kowzan, Neomi Lewis, Thomas K. Allison
Summary: The article discusses a cavity-enhanced ultrafast transient absorption spectrometer, extending broadband all-optical ultrafast spectroscopy techniques to dilute beams of gas-phase molecules and clusters. Technical innovations behind the spectrometer and transient absorption data on two molecular systems for excited-state intramolecular proton transfer are presented.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Yichi Zhong, Chun Zhou, Luyang Hou, Jingzhou Li, Wei Xie, Hongxing Dong, Long Zhang
Summary: This study reveals the time-dependent redshift process of cavity-enhanced superfluorescence under high-power injection and explains the physical mechanism of lasing broadening with increasing power from the dynamic perspective. At the same time, the multi-mode lasing dynamic photoluminescence image output at different times is also tracked.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Jingyu Wang, Min Gao, Yonglin He, Zhilin Yang
Summary: Plasmonics, as an essential discipline, has gained significant attention in the development of nanosciences and nanotechnologies. Surface plasmons (SPs) provide a solid foundation and have been widely applied in various fields such as ultrahigh-resolution spectroscopy and optical modulation. The sensitive optical characterizations for SPs, including far/near-field optics, spatial-resolved spectroscopy, and time-resolved behaviors, have sparked intense interest. This Research Update introduces ultrasensitive optical characterizations for sub-radiant SPs, demonstrates distinct characterization methods of nonlinear plasmonics in classical nanostructures, and showcases transient optical characterizations of SPs in well-defined nanostructures, providing insights into time-resolved behaviors.
Article
Chemistry, Multidisciplinary
Linqi Chen, Danqun Mao, Yingjie Hu, Hongxing Dong, Yichi Zhong, Wei Xie, Nanli Mou, Xinjie Li, Long Zhang
Summary: Researchers have successfully developed long-range-ordered and densely packed CsPbBr2Cl quantum dot-assembled superlattice microcavities, addressing the issues of spectral instability caused by photoinduced halide phase segregation and low coupling efficiency between quantum dots and optical cavities. Stable and ultrafast blue cavity-enhanced superfluorescence was achieved in this superlattice structure.
Article
Chemistry, Physical
Giuliana Faggio, Rossella Grillo, Nicola Lisi, Francesco Buonocore, Rosa Chierchia, Min Jung Kim, Gwan-Hyoung Lee, Andrea Capasso, Giacomo Messina
Summary: In this study, ultrasensitive graphene substrates were developed using ethanol Chemical Vapor Deposition (CVD), capable of detecting trace amounts of molecules down to extremely low concentrations. This exceptional result is attributed to two main features: more efficient charge transfer and a large number of grain boundaries that act as trapping sites for the molecules.
APPLIED SURFACE SCIENCE
(2022)
Review
Optics
Chuang Lu, Jerome Morville, Lucile Rutkowski, Francisco Senna Vieira, Aleksandra Foltynowicz
Summary: Vernier spectroscopy is a technique that uses optical cavities to filter and enhance the interaction of frequency comb-based technology with the sample, allowing for applications in trace gas detection to precision spectroscopy. It has been implemented using various near- and mid-infrared comb sources.
Article
Chemistry, Analytical
Chenying He, Yuanao Zhang, Ting Wen, Shenghai Pei, Zhixun Wang, Juan Xia, Guangcheng Xi, Wenjie Li, Jiahong Wang, Guoqiang Gu, Guohua Zhong, Lei Wei, Chunlei Yang, Ming Chen
Summary: A novel oxygen vacancy heteropolyacid (HFMO) is developed as a high-performance volume-enhanced Raman scattering (VERS)-active platform, which forms a special coordination bond with the probe molecule at the molecular level. This platform has excellent VERS enhancing effect and high selectivity for molecules containing the imino group. Rating: 9 out of 10.
ANALYTICAL CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Mingcai Xie, Hanyu Liu, Sushu Wan, Xuxing Lu, Daocheng Hong, Yu Du, Weiqing Yang, Zhihong Wei, Susu Fang, Chen-Lei Tao, Dan Xu, Boyang Wang, Siyu Lu, Xue-Jun Wu, Weigao Xu, Michel Orrit, Yuxi Tian
Summary: The authors present a sensitive acoustic detection system based on a single molecule as a probe, which can detect weak acoustic signals at the nanometer scale and extract their frequency and amplitude. This technology has promising potential applications in various fields such as geological exploration, military reconnaissance, and ultrasound imaging.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Francesco Segatta, Mattia Russo, Daniel R. Nascimento, Davide Presti, Francesco Rigodanza, Artur Nenov, Andrea Bonvicini, Alberto Arcioni, Shaul Mukamel, Margherita Maiuri, Luca Muccioli, Niranjan Govind, Giulio Cerullo, Marco Garavelli
Summary: In this study, the applicability of excited-state properties obtained from linear-response time-dependent density functional theory (TDDFT) in describing nonlinear spectra was investigated. The results show that TDDFT can be a suitable option for simulating nonlinear spectroscopy of large molecular systems.
JOURNAL OF CHEMICAL THEORY AND COMPUTATION
(2021)
Article
Optics
Yang Li, Haolin Chen, Yanxian Guo, Kangkang Wang, Yue Zhang, Peilin Lan, Jinhao Guo, Wen Zhang, Huiqing Zhong, Zhouyi Guo, Zhengfei Zhuang, Zhiming Liu
Summary: This study reports HfTe2 as a promising ultra-sensitive platform for Raman identification of trace molecules, demonstrating exceptional SERS activity in terms of sensitivity, uniformity, and reproducibility. Through efficient charge transfer processes, the highest Raman enhancement factor of up to 2.32 x 10(6) for the rhodamine 6G molecule can be achieved, with potential for large-scale preparation of SERS substrates for practical applications.
PHOTONICS RESEARCH
(2021)
Article
Nanoscience & Nanotechnology
Yanlin Mi, Yinzhou Yan, Mengyuan Wang, Lixue Yang, Jing He, Yijian Jiang
Summary: Researchers have reported a novel hybrid SERS substrate composed of a large microsphere and a small microsphere array with Ag nanoparticles. The cascaded structure allows for increased molecular concentration, enhanced intensity of excitation light, and giant Raman enhancement.
Article
Chemistry, Analytical
Andrew Teggert, Harish Datta, Stephen McIntosh, Barry Warden, Simon Bateson, Fathi Abugchem, Zulfiqur Ali
Summary: Absorption is a widely used technique with lower sensitivity compared to techniques like fluorescence. Optical cavity approaches can enhance sensitivity by increasing pathlength, but have not yet been widely used for analytical applications and point-of-care diagnostics.
Article
Multidisciplinary Sciences
Likun Wang, Yunpeng Xia, W. Ho
Summary: This article reports on a method for THz pump-probe measurements based on single molecule quantum sensing, achieved by combining STM and THz laser and using H-2 as a two-level system. Atomic-scale and femtosecond-scale spatial and temporal resolutions were obtained, allowing visualization of heterogeneity in the chemical environment at sub-angstrom scale.
Article
Engineering, Environmental
Teng Zheng, Laihui Luo, Peng Du, Stefan Lis, Ulises R. Rodriguez-Mendoza, Victor Lavin, Inocencio R. Martin, Marcin Runowski
Summary: By designing a series of Ce3(+)-activated Ca2Gd8Si6O26 phosphors, we have overcome the challenges of pressure monitoring with high sensitivity. These phosphors can emit a blue-violet luminescence when excited with UV light. The optimal doping content for Ce3(+) ions in the phosphors is 3 mol%, which exhibits outstanding performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Guoliang Xu, Ruiling Dong, Dayong Gu, Huili Tian, Lei Xiong, Zhixun Wang, Wei Wang, Yan Shao, Wenjie Li, Guangyuan Li, Xue Zheng, Yang Yu, Ye Feng, Yuming Dong, Guohua Zhong, Baoping Zhang, Weimin Li, Lei Wei, Chunlei Yang, Ming Chen
Summary: Defect engineering and active control of defect states bring significant enhancement to surface-enhanced Raman scattering (SERS). In this study, we developed a large-area, uniform, and reliable SERS-active substrate by growing self-grown single-crystalline V-shape SnSe2-x nanoflake arrays with controlled selenium vacancies. Theoretical calculations and experimental results showed that the substrate's superior performance can be attributed to selenium vacancies and the synergistic effect of near and far fields. We also successfully built a detection platform for rapid, antibody-free, in situ, and reliable early malaria detection.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Nutrition & Dietetics
Yongjian Zhu, Yanhua Liu, Wenjun Fu, Fangfang Zeng, Yuan Cao, Weifeng Dou, Dandan Duan, Yuming Chen, Quanjun Lyu, Xianlan Zhao
Summary: This study investigates the associations between dietary patterns and the odds of pre-eclampsia among Chinese pregnant women. The findings suggest that high fruit-vegetable and high protein dietary patterns are associated with a reduced risk of pre-eclampsia in this population.
BRITISH JOURNAL OF NUTRITION
(2023)
Editorial Material
Cardiac & Cardiovascular Systems
Jiajun Guo, Yuanwei Xu, Ke Wan, Shi Chen, Yucheng Chen
CIRCULATION JOURNAL
(2023)
Article
Chemistry, Medicinal
Zhao-min Liu, Shu-yi Li, Qi Huang, Fang-fang Zeng, Bao-lin Li, Wen-ting Cao, Yu-ming Chen
Summary: Higher habitual intake of resveratrol and consumption of resveratrol-rich foods are associated with a reduced risk of hip fracture in Chinese elderly.
PHYTOTHERAPY RESEARCH
(2023)
Article
Metallurgy & Metallurgical Engineering
Jingxi Wu, Yuyong Chen, Zhiming Du, Haiyan Jiang
Summary: The centrifugal investment casting process of the air rudder skeleton made of Ti48Al48Cr2Nb2 alloy was studied using finite element analysis and orthogonal experimental design. The results showed that shrinkage porosity mainly occurred at the intersection of the structure and near the junction between the ingate and the casting, which was related to the grain frame and closed region.
INTERNATIONAL JOURNAL OF METALCASTING
(2023)
Article
Biochemical Research Methods
Yu-Cheng Chen, Shan-Jing Yao, Dong-Qiang Lin
Summary: Mechanistic models are important in the development and optimization of ion-exchange chromatography (IEC). The steric mass action (SMA) model has led to a need for better estimation of the nonlinear parameter, steric shielding factor a. In this study, a combination of simplified linear approximation (SLA) and inverse method (IM) was proposed to initialize and determine a. The proposed method showed improved accuracy and reduced time complexity compared to previous methods.
JOURNAL OF CHROMATOGRAPHY A
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Jian Zhang, Yuanwei Xu, Weihao Li, Chao Zhang, Wentao Liu, Dong Li, Yucheng Chen
Summary: This study aimed to evaluate the prognostic value of magnetic resonance imaging (MRI) radiomics analysis of native T1 mapping in dilated cardiomyopathy (DCM). By developing multiple prediction models, it was found that the random forest model based on radiomics combined with clinical and conventional MRI parameters achieved the best performance.
JOURNAL OF MAGNETIC RESONANCE IMAGING
(2023)
Article
Optics
Song Zhu, Wenyu Wang, Linhao Ren, Chaoyang Gong, Yu-Cheng Chen, Lei Shi, Xinliang Zhang
Summary: The generation of EIT and EIA effects in optical cavity systems has various applications, including quantum interference effects, slow light, and light storage. This study proposes and demonstrates TGIT and TGIA effects in a single microcavity, induced by a unique temperature gradient. The platform also enables direct temperature readout with high resolution using photonic barcodes based on TGIT (or TGIA), offering a novel and efficient scheme for dynamic mode coupling in applications like light storage and temperature detection.
LASER & PHOTONICS REVIEWS
(2023)
Article
Environmental Sciences
Jing Yang, Qian Guo, Lei Li, Ruixue Wang, Yucheng Chen, Xingrun Wang
Summary: Compared to the concentration of Cr(VI), the distribution of specific Cr(VI) species in soil is often overlooked. This lack of attention may lead to inaccurate environmental risk assessment of Cr(VI) contaminated soil and hinder soil remediation efforts. This study systematically investigates the mechanisms and factors controlling the evolution of Cr(VI) species in soil by analyzing the distribution of Cr(VI) and Cr(III) species in soils with different particle sizes and textures. The results show that Cr(VI) can be adsorbed by minerals containing exchangeable calcium ions and metal oxide hydrates, forming stable adsorbed Cr(VI). Additionally, a small fraction of Cr(VI) precipitates as calcium chromate. The majority of Cr(VI) discharged into soil tends to be reduced by ferrous ions or minerals containing ferrous ions, resulting in the formation of Fe(III)-Cr(III) coprecipitate. The speciation of Cr in the soil is closely correlated to the contents of iron, exchangeable calcium ions, and metal oxide hydrates, which influence the reduction, precipitation, and adsorption of Cr(VI), respectively. After the equilibrium of these reactions is reached, the remaining Cr(VI) retains its original water-soluble state in soil.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Green & Sustainable Science & Technology
Fu Cheng, Shanshan Ji, Yucheng Chen
Summary: Enterprise innovation is crucial for national economic growth. Employee Stock Ownership Plan (ESOP) is an effective means to stimulate employees' innovation vitality by linking their wealth with firm value. This study examines the impact of ESOP implementation and contract design on enterprise innovation investment in China. The findings highlight that ESOP implementation is beneficial for increasing innovation investment, and the effect varies with the design of incentive contracts.
Article
Computer Science, Artificial Intelligence
Wan Xiang Shen, Shu Ran Liang, Yu Yang Jiang, Yu Zong Chen
Summary: Researchers have developed an algorithm called MEGMA, which transforms metagenomic data into personalized multichannel microbiome 2D representations and improves disease prediction accuracy. This method analyzes microbial profiles through clustering and learning, and combined with ConvNet-based AggMapNet models, outperforms other commonly used machine learning and deep learning models. Additionally, the method reliably identifies disease-prediction microbes (biomarkers).
Article
Chemistry, Multidisciplinary
Xinyue Cao, Ying Wang, Xinran Song, Wanqing Lou, Xiaoyan Li, Weiping Lu, Kai Chen, Liang Chen, Yu Chen, Bingcang Huang
Summary: Sonodynamic therapy has the potential to revolutionize biomedicine with its non-invasiveness, deep tissue penetration, and controllability. However, the lack of suitable nanosonosensitizers with reactive oxygen species generation ability is a significant obstacle for its wider application. This study designs a bismuth-based nanosonosensitizer (Bi-HJ) that combines tumor therapy with metabolic regulation, photothermal therapy, and computed tomography imaging. The results demonstrate the effectiveness of Bi-HJ in achieving enhanced tumor therapy.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Optics
Nicholas D. Cooper, Uyen M. Ta, Melanie A. R. Reber
Summary: We investigate the use of passive intracavity optical filters for controlling the laser output spectrum of a polarization-mode-locked, ultrafast ytterbium fiber laser. The filter cutoff frequency can increase or extend the overall lasing bandwidth. Shortpass and longpass filters at different cutoff frequencies are studied for their impact on laser performance, including pulse compression and intensity noise. The intracavity filter not only shapes the output spectra, but also enables broader bandwidths and shorter pulses in ytterbium fiber lasers, demonstrating its usefulness in achieving sub-45 fs pulse durations.
Article
Environmental Sciences
Yu-Chuan Yen, Chun-Hung Ku, Ta-Chih Hsiao, Kai Hsien Chi, Chiung-Yu Peng, Yu-Cheng Chen
Summary: The study found that the COVID-19 pandemic and its associated restrictive measures had a significant impact on personal exposure to specific VOCs and aldehydes. During the Level 3 warning period, there was a significant decrease in exposure to VOCs associated with automobile emissions, but an increase in formaldehyde exposure. This study provides valuable insights into the influence of COVID-19 measures on personal exposure to specific VOCs and aldehydes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Yu-Chuan Yen, Chun-Hung Ku, Tsung-Chieh Yao, Hui-Ju Tsai, Chiung-Yu Peng, Yu-Cheng Chen
Summary: This study assessed the variability and potential health risks of exposure to aldehydes in schoolchildren, finding that personal exposure to formaldehyde and acrolein were higher during the warm season. The within-subject variance accounted for the majority of the total variance in exposure. Factors such as season, location, household refurbishment, and indoor ventilation were significantly associated with personal exposure to aldehydes.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Radiology, Nuclear Medicine & Medical Imaging
Lutong Pu, Yike Diao, Jie Wang, Tingting Fang, Ziqian Xu, Jiayu Sun, Yucheng Chen
Summary: This study investigated the left atrial dysfunction of hypertrophic cardiomyopathy (HCM) patients using a rapid semi-automatic method and found that left atrial long-axis strain (LAS) can serve as a predictive value for atrial fibrillation (AF) occurrence in HCM patients.
EUROPEAN RADIOLOGY
(2023)
