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In-situ tracking of organic reaction dynamics:an infrared-temperature dual sensing approach using a single chalcogenide fiber 认领 引用
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作者 XINXIANG HUANG SHILIANG KANG +4 位作者 YANQING FU LINLING TAN CHENGWEI GAO SHIXUN DAI CHANGGUI LIN 《Photonics Research》 SCIE EI CAS CSCD 2026年第6期2418-2427,共10页
Precise control over organic reaction dynamic requires in-situ insight into temperature and concentration variations.However,conventional detection strategies,often relying on off-line or decoupled methods,suffer from... Precise control over organic reaction dynamic requires in-situ insight into temperature and concentration variations.However,conventional detection strategies,often relying on off-line or decoupled methods,suffer from delayed responses and poor temporal synchronization.Herein,we propose a bifunctional single-fiber sensor based on Ge5As25Se30Te40 chalcogenide glass,which seamlessly integrates fiber evanescent wave spectroscopy for chemical fingerprinting identification with a thermoresistive effect for thermal sensing.It exhibits exceptional performance with a rapid temperature response(~2.6 s)and a high temperature sensitivity(jTCRj~4.07%K-1).Validated through the in-situ monitoring of ethyl butyrate synthesis,the single-fiber sensor effectively tracked reaction evolution and thermal distinctness,providing reliable guidance for process optimization and control.With its label-free detection,structural simplicity,and high sensitivity,this proposed strategy represents a robust process analytical technology tool for monitoring complex organic reactions. 展开更多
关键词 chemical fingerprinting identification situ tracking fiber evanescent wave spectroscopy thermoresistive effect infrared temperature dual sensing detection strategiesoften precise control organic reaction dynamic organic reaction dynamics
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Glass formation and physical properties of Sb2S3–CuI chalcogenide system 认领 引用
2
作者 Qilin Ye Dan Chen Changgui Lin 《Chinese Physics B》 SCIE EI CAS CSCD 2021年第1期412-416,共5页
Novel chalcogenide glasses of pseudo-binary(100-x)Sb2S3-xCuI systems were synthesized by traditional meltquenching method.The glass-forming region of Sb2S3-CuI system was determined ranging from x=30 mol%t... Novel chalcogenide glasses of pseudo-binary(100-x)Sb2S3-xCuI systems were synthesized by traditional meltquenching method.The glass-forming region of Sb2S3-CuI system was determined ranging from x=30 mol%to 40 mol%.CuI acts as a non-bridging modifier to form appropriate amount of[SbSI]structural units for improving the glass-forming ability of Sb2S3.Particularly,as-prepared glassy sample is able to transmit light beyond 14μm,which is the wider transparency region than most sulfide glasses.Their physical properties,including Vickers hardness(Hv),density(ρ),and ionic conductivity(σ)were characterized and analyzed with the compositional-dependent Raman spectra.These experimental results would provide useful knowledge for the development of novel multi-spectral optical materials and glassy electrolytes. 展开更多
关键词 chalcogenide glass infrared(IR)transparency Sb2S3 SbSI Raman spectra
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Classification,heterogeneity,and evolution of snow drought in Xinjiang under climate warming 认领 引用
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作者 Hong ZHU Peng CUI +4 位作者 Yan WANG Jiansheng HAO Guoqing CHEN Changgui LIN Lanhai LI 《Science China Earth Sciences》 SCIE EI CSCD 2026年第7期2611-2624,共14页
Against the backdrop of global warming,snow drought events have occurred frequently in Xinjiang in recent decades,posing severe threats to agricultural and pastoral ecosystems.Based on ERA5 reanalysis data,the Long-te... Against the backdrop of global warming,snow drought events have occurred frequently in Xinjiang in recent decades,posing severe threats to agricultural and pastoral ecosystems.Based on ERA5 reanalysis data,the Long-term Series of Daily Snow Depth Dataset in China,and CMIP6 climate projections,this study systematically investigates the spatiotemporal heterogeneity and evolutionary characteristics of typical snow droughts in Xinjiang during 1980–2021.The results indicate that snow droughts in Xinjiang exhibit pronounced temporal clustering.Prior to 2000,dry-only snow droughts occurred more frequently,whereas since 2000,warm-dry snow droughts have increased markedly.Meanwhile,the frequency of warm-only snow droughts has relatively declined.Snow droughts also exhibit strong spatial heterogeneity.The Kunlun Mountains experience the highest frequency of snow droughts and are projected to experience higher snow drought risk in the future.In addition,this study identifies cold snow droughts driven primarily by snow sublimation,highlighting a distinct mechanism for snow drought formation in the high-altitude regions of Xinjiang.With continued warming,the risk of snow drought in Xinjiang is projected to intensify by 2100.Warm-dry snow droughts are expected to become more frequent,whereas dry-only snow droughts are projected to decrease.Overall,this study elucidates the formation processes and coupled thermal-hydrological mechanisms of different snow drought types,providing a scientific basis for snow drought prediction and mitigation in Xinjiang. 展开更多
关键词 Snow drought Spatiotemporal heterogeneity Formation mechanism Sublimation Xinjiang
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Unlocking body-surface physiological evolution via IR-temperature dual sensing with single chalcogenide fiber 认领 引用 被引量：2
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作者 Yanqing Fu Shiliang Kang +5 位作者 Gangjie Zhou Xinxiang Huang LinLing Tan Chengwei Gao Shixun Dai Changgui Lin 《Light: Science & Applications》 SCIE EI CAS CSCD 2025年第6期1749-1758,共10页
Improvements to body-surface physiological monitoring ability including real-time,accuracy and integration,are essential to meet the expansive demands for personal healthcare.As part of this,simultaneous monitoring of... Improvements to body-surface physiological monitoring ability including real-time,accuracy and integration,are essential to meet the expansive demands for personal healthcare.As part of this,simultaneous monitoring of sweat metabolites and body temperature offers an exciting path to maximizing diagnostic precision and minimizing morbidity rates.Herein,we report a high-performance biomarker-temperature sensor made of a single As3Se5Te2chalcogenide glass fiber to monitor physiology evolution on body-surface.The sensor integrates efficient thermal resistance and fiber evanescent wave effects,permitting the independent sensing of temperature and biomarkers with an ultrahigh temperature coefficient of resistance(−5.84%K–1),rapid temperature response(0.3 s)and excellent IR sensing sensitivity.Moreover,by attaching a fiber to the wrist,we demonstrate simultaneous observation of both sweat metabolite(urea and lactate)and temperature changes during exercise.This illuminating sensing method will provide crucial capabilities in physiological monitoring and pave the way for advanced personalized diagnostic. 展开更多
关键词 monitor physiology evolution maximizing diagnostic precision body temperature ir temperature dual sensing real time sensing body surface physiological monitoring chalcogenide fiber sweat metabolites
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Rising future tropical cyclone-induced extreme winds in the Mekong River Basin 认领 引用 被引量：2
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作者 Aifang Chen Kerry AEmanuel +2 位作者 Deliang Chen Changgui Lin Fuqing Zhang 《Science Bulletin》 SCIE EI CAS CSCD 2020年第5期419-424,共6页
The societal impact of extreme winds induced by tropical cyclones(TCs)is a major concern in the Mekong River Basin(MRB).Though no clear trend of landfalling TC intensity along the Vietnam coastline has been observed s... The societal impact of extreme winds induced by tropical cyclones(TCs)is a major concern in the Mekong River Basin(MRB).Though no clear trend of landfalling TC intensity along the Vietnam coastline has been observed since the 1970 s,climate models project an increasing TC intensity in the 21 st century over the Western North Pacific,which is the primary TC source region influencing the MRB.Yet,how future TC activities will affect extreme winds quantitatively in the MRB remains unclear.By employing a novel dynamical downscaling technique using a specialized,coupled ocean-atmospheric model,shorter return periods of maximum wind speed in the MRB for 2081–2100 compared with 1981–2000 are projected based on five global climate models under the RCP8.5 scenario,suggesting increases in the future tropical cyclone intensity.The results point to consistently elevated future TC-related risks that may jeopardize sustainable development,disrupt food supply,and exacerbate conflicts in the region and beyond. 展开更多
关键词 Tropical cyclone Extreme wind Return period Mekong River Basin
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Broadband NIR-emitting Te cluster-doped glass for smart light source towards night-vision and NIR spectroscopy applications 认领 引用 被引量：1
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作者 LINLING TAN YANQING FU +3 位作者 SHILIANG KANG LOTHAR WONDRACZEK CHANGGUI LIN YUANZHENG YUE 《Photonics Research》 SCIE EI CAS CSCD 2022年第5期1187-1193,共7页
Broadband near-infrared(NIR)-emitting materials are crucial components of the next generation of smart NIR light sources based on blue light-emitting diodes(LEDs). Here, we report a Te cluster-doped borate glass, whic... Broadband near-infrared(NIR)-emitting materials are crucial components of the next generation of smart NIR light sources based on blue light-emitting diodes(LEDs). Here, we report a Te cluster-doped borate glass, which exhibits ultra-broadband emission around 980 nm with a full-width at half-maximum(FWHM) of 306 nm under blue light excitation. We propose adjustments of glass chemistry and processing condition as a means for topochemical tailoring of the NIR photoemission characteristics in such materials. Through implementing strongly reducing conditions during glass melting, Te clusters with broad NIR photoluminescence can be generated and stabilized once the melt is vitrified to the glassy state. Tunability of the NIR emission peak over the wavelength range of 904 to 1026 nm is possible in this way, allowing for fine adjustments of spectral properties relative to the stretching vibrations of common chemical bonds, for example, in water, proteins, and fats. This potentially enables high sensitivity in NIR spectroscopy. We further demonstrate potential application of glass-converted LEDs in night vision. 展开更多
关键词 Broadband glass smart
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