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Methane concentration detection system based on differential infrared absorption 被引量:1
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作者 宋林丽 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2015年第2期193-196,共4页
The infrared absorption method for methane concentration detection is an ideal way to detect methane at present. However, it is difficult to spread this method due to its high cost. In this paper, by using a wideband ... The infrared absorption method for methane concentration detection is an ideal way to detect methane at present. However, it is difficult to spread this method due to its high cost. In this paper, by using a wideband infrared light emitting di- ode (LED) accompanied with a PIN photo electric diode, a low-cost methane detection system was designed. To overcome the shortcomings caused by the wide working band, a differential light path was designed. By means of a differential ratio algo- rithm, the stability and the accuracy of the system were guaranteed. Finally, the validity of the system with the proposed algo- rithm was verified by the experiment results. 展开更多
关键词 methane detection infrared absorption differential light path differential ratio algorithm
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Infrared Absorption and [CuO_5] Pyramid of High T_c Superconductor Bi-Sb-Sr-Ca-Cu-O System
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作者 宋桂兰 朱正芳 白培光 《Journal of Beijing Institute of Technology》 EI CAS 1996年第1期63-67,共5页
The infrared absorption spectra of different superconducting phase of high Tc super conductor Bi-Sb-Sr-Ca-Cu-O have been measured . The results show that only in the range of 400cm-1 -700cm-1,there is a group of peaks... The infrared absorption spectra of different superconducting phase of high Tc super conductor Bi-Sb-Sr-Ca-Cu-O have been measured . The results show that only in the range of 400cm-1 -700cm-1,there is a group of peaks which changes with different superconducting phases.According to group theory and infrared spectra of CuO, this group of peaks could be assigned to be the [CuO6]octahedron, the [CuO5] pyramid and the [CuO4]plane quadrilateral,but not CU-O plane or CU-O chain. Furthermore, the quasi-three dimensional Cu-O layers consisting of [CuO5] pyramids and proper coupling between them are essential factor for high Tc. It seems that the weaker compling of layers, the higher Tc 展开更多
关键词 infrared absorption high temperature superconductivity [CuO_5] pyramid structure
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Crystal microstructure, infrared absorption, and microwave electromagnetic properties of (La_(1-x)Dy_x)_(2/3)Sr_(1/3)MnO_3 被引量:2
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作者 LIU Jian YUN Guohong SU Meiling 《Rare Metals》 SCIE EI CAS CSCD 2009年第5期494-499,共6页
The manganite perovskite polycrystal samples of (La1-xDyx)2/3Sr1/3MnO3 (x = 0, 0.1, 0.2, 0.35, and 0.5) doped with Dy were prepared by solid state reaction in atmosphere to measure their X-ray diffraction (XRD) ... The manganite perovskite polycrystal samples of (La1-xDyx)2/3Sr1/3MnO3 (x = 0, 0.1, 0.2, 0.35, and 0.5) doped with Dy were prepared by solid state reaction in atmosphere to measure their X-ray diffraction (XRD) patterns, scanning electric microscope (SEM) images, infrared absorption spectra, and microwave electromagnetic properties. The displacement of the XRD peaks of the samples was found, and the 2θ increases from 0.05o to 0.5o. The grains of undoped La2/3Sr1/3MnO3 not only have the greatest size, but also the most regular shape. The size of the grains decreases as the Dy doping content increases from 0 to 0.5. The infrared absorption spectra of all samples were measured at room temperature. An absorption peak corresponding to the stretching vibration mode of Mn-O bonds appears within the range of 591-629 cm-1. The absorption peak shifts from a higher frequency to a lower one with the decrease of the average ionic radius of A-site. The frequency de- pendence of microwave-absorbing properties, imaginary components of the complex magnetic permeability μ" and dielectric permeability ε" for all samples was measured at room temperature from 8 to 13 GHz. The results show that the loss of microwave absorption can be attrib- uted to both the magnetic and electric losses. The increase of Dy content not only enhances the microwave absorption but also causes the displacement of the absorption peaks. 展开更多
关键词 MANGANITE crystal microstructure infrared absorption spectrum microwave electromagnetic property DOPING rare earth
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Deposition of hexagonal boron nitride thin films on silver nanoparticle substrates and surface enhanced infrared absorption 被引量:2
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作者 邓金祥 陈亮 +3 位作者 满超 孔乐 崔敏 高学飞 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第4期513-516,共4页
Silver nanoparticle thin films with different average particle diameters are grown on silicon substrates. Boron nitride thin films are then deposited on the silver nanoparticle interlayers by radio frequency (RF) ma... Silver nanoparticle thin films with different average particle diameters are grown on silicon substrates. Boron nitride thin films are then deposited on the silver nanoparticle interlayers by radio frequency (RF) magnetron sputtering. The boron nitride thin films are characterized by Fourier transform infrared spectra. The average particle diameters of silver nanoparticle thin films are 126.6, 78.4, and 178.8 nm. The results show that the sizes of the silver nanoparticles have effects on the intensities of infrared spectra of boron nitride thin films. An enhanced infrared absorption is detected for boron nitride thin film grown on silver nanoparticle thin film. This result is helpful to study the growth mechanism of boron nitride thin film. 展开更多
关键词 hexagonal boron nitride thin film silver nanoparticles surface enhanced infrared absorption
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Magnetism, Electronic Transport and Infrared Absorption Spectra in Perovskite Manganite La_(0.67-x)Dy_xCa_(0.33)MnO_3 (x=0~0.6)
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作者 曹晓明 卢遵铭 +1 位作者 陈红建 李养贤 《Journal of Rare Earths》 SCIE EI CAS CSCD 2007年第S1期207-210,共4页
Polycrystalline samples La0.67-xDyxCa0.3MnO3 (x=0~0.6) were prepared by traditional solid-state reaction method. The magnetization and resistivity of the samples were measured by PPMS (Quantum Design). The infrared a... Polycrystalline samples La0.67-xDyxCa0.3MnO3 (x=0~0.6) were prepared by traditional solid-state reaction method. The magnetization and resistivity of the samples were measured by PPMS (Quantum Design). The infrared absorption spectra (temperature scope: 20~300 K, frequency: 400~4400 cm-1) were collected by WQF-410 Fourier Transform Spectrophotometer. The substitution of Dy on La sites results in a decrease of the Curie temperature Tc and the magnetization, and also induces cluster-glass behaviors. The resistivity of the compounds is enhanced by Dy doped. Infrared absorption spectra provide the evidence of the variety of Mn-O-Mn bond length due to the Dy substitution and temperature changing. These results suggest that all of the magnetic coupling between Dy and Mn sublattice and La-Dy average ionic radius contribute to the magnetic and electronic character. 展开更多
关键词 PEROVSKITE spin glass infrared absorption rare earths
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Residual compressive stress and intensity of infrared absorption of cubic BN films prepared by plasma enhanced chemical vapor deposition
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作者 杨杭生 金盼盼 +1 位作者 徐亚伯 李海洋 《Chinese Physics B》 SCIE EI CAS CSCD 2014年第3期475-481,共7页
Theoretical and experimental investigations on the dependence of the intensity of infrared (IR) absorption of poly- crystalline cubic boron nitride thin films under the residual compressive stress conditions have be... Theoretical and experimental investigations on the dependence of the intensity of infrared (IR) absorption of poly- crystalline cubic boron nitride thin films under the residual compressive stress conditions have been performed. Our results indicate that the intensity of the IR absorption is proportional to the total degree of freedom of all the ions in the ordered regions. The reduction of interstitial Ar atom concentration, which causes the increase in the ordered regions of cubic boron nitride (cBN) crystallites, could be one cause for the increase in the intensity of IR absorption after residual compressive stress relaxation. Theoretical derivation is in good agreement with the experimental results concerning the IR absorption intensity and the Ar interstitial atom concentration in cubic boron nitride films measured by energy dispersion X-ray spec- troscopy. Our results also suggest that the interstitial Ar is the origin of residual compressive stress accumulation in plasma enhanced cBN film deposition. 展开更多
关键词 infrared absorption compressive stress degree of freedom interstitial atom
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Tuning infrared absorption in hyperbolic polaritons coated silk fibril composite
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作者 Lihong Shi Jiebin Peng 《Chinese Physics B》 SCIE EI CAS CSCD 2022年第11期381-387,共7页
Advanced textiles for thermal management give rise to many functional applications and unveil a new frontier for the study of human thermal comfort.Manipulating the coated quasi-particles between the composite compone... Advanced textiles for thermal management give rise to many functional applications and unveil a new frontier for the study of human thermal comfort.Manipulating the coated quasi-particles between the composite components offers a platform to study the advanced thermoregulatory textiles.Here,we propose that coating the hyperbolic polariton can be an effective tool to tune infrared absorption in hexagonal boron nitride-coated silk composite.Remarkably,we achieve significant tuning of the infrared absorption efficiency of silk fibrils through the designed hexagonal boron nitride film.The underlying mechanism is related to resonance coupling between hyperbolic phonon polaritons.We find a notably high infrared absorption efficiency,nearly 3 orders larger than that without hBN coating,which can be achieved in our composite system.Our results indicate the promising future of advanced polariton-coated textiles and open a pathway to guide the artificial-intelligence design of advanced functional textiles. 展开更多
关键词 thermal radiation thermal management infrared absorption hyperbolic polaritons
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Investigation of a Hot Filament Diamond Deposition by in situ Infrared Absorption
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作者 崔景彪 《High Technology Letters》 EI CAS 1996年第1期72-76,共5页
In situ infrared absorption spectroscopy has been measured for a hot filament diamond growth process. Absorption of CH4 and C2H2 species at 3050 cm-1 and 730 cm-1 were detected respectively. The absorption intensity o... In situ infrared absorption spectroscopy has been measured for a hot filament diamond growth process. Absorption of CH4 and C2H2 species at 3050 cm-1 and 730 cm-1 were detected respectively. The absorption intensity of CH4 decreases while that of C2H2 increases as filament temperature is raised. The correlation between infrared absorption intensity and diamond growth rate or diamond film quality was found. High C2H2 or low CH4 concentration in the reaction region leads to high quality diamond film growth and high growth rate. 展开更多
关键词 Hot filament CVD In situ infrared absorption Diamond quality Growth rate
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Calculation of the Infrared Absorption for MX Compounds
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作者 ZHANGLu-yin QUShi-ming 《Semiconductor Photonics and Technology》 CAS 2003年第2期99-101,共3页
In the theory calculation of lattice vibration, one acoustic and three optical branches were found to compose the phonon vibrating spectrum.Some isolated modes with frequencies lying outside the continuum branches wil... In the theory calculation of lattice vibration, one acoustic and three optical branches were found to compose the phonon vibrating spectrum.Some isolated modes with frequencies lying outside the continuum branches will arise under the defect states.These local model results in the sharp peaks in the infrared absorption and Raman spectra.From calculation of the infrared absorption,the local mode with the infrared activity is obtained in the infrared absorption spectrum of MX compounds. 展开更多
关键词 MX compounds infrared absorption CALCULATION
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Resonant perfect absorption of molybdenum disulfide beyond the bandgap
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作者 于昊 谢颖 +3 位作者 魏佳辉 张培晴 崔志英 于浩海 《Chinese Physics B》 SCIE EI CAS CSCD 2023年第4期670-676,共7页
Light absorption and radiation are fundamental processes in optical science and engineering.Materials with perfect absorption properties play an important role in numerous optical applications.Following the meteoric r... Light absorption and radiation are fundamental processes in optical science and engineering.Materials with perfect absorption properties play an important role in numerous optical applications.Following the meteoric rise of MoS_(2)material,global opportunities and challenges coexist due to its extremely weak light-matter interaction capability beyond its energy band.In this work,we designed a kind of sandwich resonance structure and investigated MoS_(2)as a perfect absorber in the infrared spectrum that should be transparent according to the optical band theory.The infrared absorption properties of W or Au/MoS_(2)/Au models at 800 nm-2400 nm were systematic simulated.By optimizing the structural parameters,the resonant wavelength of perfect absorption can be modulated from 830 nm to 1700 nm with angle insensitivity and polar independence.Moreover,we discovered that the bandwidth of absorption exceeding 50%of the W-top model reaches500 nm,while that of the Au-top model is less than 100 nm,indicating that the top metal material has a great influence on the resonance absorption spectrum.Our work provides a practical route for enhancing and manipulating the light-matter interactions of low-dimensional materials beyond their own band gaps,which will be critical in the future design and implementation of optoelectronic devices and systems. 展开更多
关键词 multilayer MoS_(2) Fabry-Perot structure infrared absorption resonance enhancement
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SYNTHESIS AND CHARACTERIZATIONS OF NEAR INFRARED ABSORBING POLYMERS 被引量:1
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作者 Ying-huaQi PierreDesjardins +3 位作者 MariaBirau Xian-guoWu Zhi-yuanWang Zhi-yuanWang 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2003年第2期147-152,共6页
A series of near infrared (NIR) absorbing dinuclear ruthenium dicarbonylhydrazine complexes (DCH-Ru),[{Ru(bpy)_2)_2μ-DCH]^(n+) (where bpy = 2,2'-bipyridinc and n = 2, 3 or 4), were prepared. The DCH-Ru complexes ... A series of near infrared (NIR) absorbing dinuclear ruthenium dicarbonylhydrazine complexes (DCH-Ru),[{Ru(bpy)_2)_2μ-DCH]^(n+) (where bpy = 2,2'-bipyridinc and n = 2, 3 or 4), were prepared. The DCH-Ru complexes areelectrochromic in the NIR region with a high absorption coefficient at 1550-1600 nm typically over 10000 M^(-1)cm^(-1). DCH-Ru complex polymers with good NIR electrochromic properties were also obtained and processed to make a device foroptical attenuation at a wavelength of 1550 nm. The potential of these DCH-Ru polymers for use in a variable opticalattenuator has been demonstrated with an attenuating power at the 1550-nm telecommunication wavelength over 7.0 dB permicron of polymer film thickness. Other classes of NIR active materials are the pentacenediquinones and the correspondingpoly(ether pentacenediquinone)s. These polymers can be electrochemically reduced to the corresponding semiquinone(radical anion) having NIR absorption within a telecom window (e. g., 1310 nm). 展开更多
关键词 Near infrared absorption Dinuclear ruthenium complex Poly(ether pentacenediquinone)s Radical anion Optical attenuation
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Determination of spin-orbit splitting Δ_0 of valence band at Γ for gallium phosphide nanoparticles using fluorescence and infrared spectroscopes
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作者 ZHANG Zhaochun LI Jianlin 《Rare Metals》 SCIE EI CAS CSCD 2011年第5期510-515,共6页
The value of spin-orbit splitting Δ 0 of gallium phosphide (GaP) nanoparticles was determined. The information concerning the spin-orbit splitting of the valence band at Γ was acquired using fluorescence and infra... The value of spin-orbit splitting Δ 0 of gallium phosphide (GaP) nanoparticles was determined. The information concerning the spin-orbit splitting of the valence band at Γ was acquired using fluorescence and infrared spectroscopes. Detailed investigation on the fluorescence characteristics under ultraviolet photoexcitation reveals that two doublets of emission transitions are related to the spin-orbit splitting of the valence band. The origin of two broad violet emissions, 3.00 and 3.10 eV, can be attributed to the direct transitions near the Γ point of the Brillouin zone between the Γ 1 conduction band and Γ 15 valance band, that is, Γ 6c –Γ 8v and Γ 6c –Γ 7v , respectively. The origin of two blue emissions, 2.74 and 2.64 eV, can be attributed to the indirect transitions between the X 1 conduction band and Γ 15 valance band, that is, Δ 5c –Γ 8v and Δ 5c –Γ 7v , respectively. Based on these transitions, the spin-orbit splitting Δ 0 of the GaP nanoparticles is determined as 0.10 eV. The infrared spectrum of the GaP nanoparticles shows a band at 817 cm -1 which is assigned to the transition between the Γ 7v and Γ 8v valence band maxima. It follows therefore that the spin-orbit splitting Δ 0 is 0.10 eV. 展开更多
关键词 spin-orbit splitting NANOPARTICLES gallium phosphide FLUORESCENCE infrared absorption
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MOCVD Ga_xIn_(1-x)As_(1-y)Sb_y Alloys and the Infrared Detector
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作者 周天明 张宝林 +2 位作者 金亿鑫 蒋红 宁永强 《Rare Metals》 SCIE EI CAS CSCD 1992年第3期190-194,共5页
Ga_xIn_(1-x)As_(1-y)Sb_y alloys have been grown by atmospheric pressure MOCVD on n-GaSb(Te-doped) substrate.The sohd composition was determined by using electron microprobe.The alloys of GalnAsSb with composition in m... Ga_xIn_(1-x)As_(1-y)Sb_y alloys have been grown by atmospheric pressure MOCVD on n-GaSb(Te-doped) substrate.The sohd composition was determined by using electron microprobe.The alloys of GalnAsSb with composition in miscibility gap were successfully grown.The optical properties of Ga_xIn_(1-x)As_(1-y)Sb_y lavers were characterized by the photoluminescence and the infrared absorption.The spectral responses of p^+-GaInAsSb/p-Ga_xIn_(1-x)As_(1-y)Sb_y/n-GaSb detectors showed wavelength cut off at 2.4μm and detectivity- D~*=5×10~8 cmHz^(1/2)/W at room temperature. 展开更多
关键词 MOCVD Ga_xIn+(1-x)As_(1-y)Sb_y Photoluminescence infrared absorption infrared detector
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Infrared emissivity of transition elements doped ZnO
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作者 姚银华 曹全喜 《Journal of Central South University》 SCIE EI CAS 2013年第3期592-598,共7页
Infrared emissivity was studied in Zno.99Mo.olO (M is Mn, Fe or Ni) and Znl_xCoxO (x=0.01, 0.02, 0.03 and 0.04) powders synthesized by solid-state reaction at various temperatures. XRD patterns confirm the wurtzit... Infrared emissivity was studied in Zno.99Mo.olO (M is Mn, Fe or Ni) and Znl_xCoxO (x=0.01, 0.02, 0.03 and 0.04) powders synthesized by solid-state reaction at various temperatures. XRD patterns confirm the wurtzite structure of the prepared samples. No peaks of other phases arising from impurities are detected in Mn- and Co-doped ZnO, hut the peaks of ZnFe204 and NiO are observed in Zno.99Feo.010 and Zno.99Nio.o10. The SEM observations indicate that with larger grain sizes than those of Zn0.99Feo.010 and Zno.99Ni0.010, Co-doped ZnO exhibits smooth grain surfaces. The infrared absorption spectra show that infrared absorptions related to oxygen in Zn0.99M0.010 are much stronger than those in Co-doped ZnO. Co ions are dissolved into the ZnO lattice with Co2+ state from XPS spectra analysis. The infrared emissivity results imply that the emissivity of Zno.99Ni0.010 is the highest (0.829) and that of Zno.99C00.010 is the lowest (0.784) at 1 200 ℃. The emissivity of Zno.99Co0.010 decreases to the minimum (0.752) at 1 150 ℃ and then increases with growing calcination temperature. As the Co doping content grows, the emissivity of Co-doped ZnO calcined at 1 200 ℃ falls to 0.758 in the molar fraction of 3% and then ascends. 展开更多
关键词 solid-state reaction transition element doping infrared absorption spectrum infrared emissivity
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Signal Processing Circuit Design of Infrared Detection System with SO2 Concentration Based on Correlation Filter Technology
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作者 赵雁雨 姚娜 《Journal of Measurement Science and Instrumentation》 CAS 2011年第4期394-397,共4页
Signals from infrared detector are very weak in SO2 concentration measuring system.In order to improve the sensitivity of detection,combining with filter correlation technology and infrared absorption principle,the we... Signals from infrared detector are very weak in SO2 concentration measuring system.In order to improve the sensitivity of detection,combining with filter correlation technology and infrared absorption principle,the weak signal processing circuit is designed according to correlation detection technology.Under laboratory conditions,system performance of SO2 concentration is tested,and the experimental data are analyzed and processed.Then relationship of SO2 concentration and the measuring voltage is provided to prove that the design improves measuring sensitivity of the system. 展开更多
关键词 SO2 infrared absorption correlation detecting and filtering technology weak signal processing
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Anti-ultraviolet aging tests of asphalts adapting to environment in Tibetan Plateau of China 被引量:15
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作者 廖公云 黄晓明 巴桑顿珠 《Journal of Southeast University(English Edition)》 EI CAS 2008年第4期503-507,共5页
Ultraviolet (UV) aging is one of the main factors which cause premature damage of asphalt pavements in the Tibetan Plateau, China. According to the measured levels of UV radiation, aging tests of styrene-butadiene r... Ultraviolet (UV) aging is one of the main factors which cause premature damage of asphalt pavements in the Tibetan Plateau, China. According to the measured levels of UV radiation, aging tests of styrene-butadiene rubber (SBR) asphalts with different contents of three anti-UV-aging agents including nano-TiO2, CeO2 and carbon black are performed. Common indices, which include retained penetration after thin film oven tests (TFOT) and softening point, and strategic highway research program (SHRP) indices of aged asphalts are evaluated. Infrared absorption spectral analysis is performed on asphalt specimens with 0. 8% carbon black which have been aged for different aging times (500, 1000 and 1 500 h). By grey incidence analysis, the optimal contents of anti-UV-aging agents are determined. The results show that TiO2 and CeO2 are not only good UV absorbing or shielding agents, but also strong oxidants. Carbon black is a good anti-UV-aging agent, and its optimal content is about 0. 8% of asphalt weight. UV aging of asphalt mainly occurs in the early stages of aging. The longer the aging time, the more severe the aging of asphalt. 展开更多
关键词 ultraviolet (UV) aging agent carbon black infrared absorption spectral analysis grey incidence analysis
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First-principles Study on Infrared Absorptions of Transition Metal-doped ZnO with Oxygen Vacancy 被引量:2
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作者 Yinhua YAO Quanxi CAO 《Acta Metallurgica Sinica(English Letters)》 SCIE EI CAS CSCD 2013年第4期467-472,共6页
Using first-principle theory, the infrared absorptions of transition metal (Mn, Fe, Co, Ni)-doped ZnO were investigated. The results indicate that the absorptions of Mn- and Co-incorporated ZnO without oxygen vacanc... Using first-principle theory, the infrared absorptions of transition metal (Mn, Fe, Co, Ni)-doped ZnO were investigated. The results indicate that the absorptions of Mn- and Co-incorporated ZnO without oxygen vacancy are reduced, while those of Fe- and Ni-doped ZnO are raised. This is consistent with the previous experimental results. The effects of oxygen vacancy on the absorptions of the doped systems were predicted. When a neutral oxygen vacancy is introduced, all doping elements decrease the absorptions. On the contrary, the absorptions of the doped systems are enhanced if the vacancies are charged. Degraded absorptions can be obtained by increasing the permeability. However, the appearance of anti-bonding states may cause enhanced absorptions. In the current study, Mn-doped ZnO is the most suitable for use as low infrared absorption materials. 展开更多
关键词 infrared absorption Oxygen vacancy ZNO Transition metal
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Synthesis and Characteristics of Diamond-like Carbon Films Deposited on Quartz Substrate 被引量:2
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作者 黄卫东 丁鼎 詹如娟 《Plasma Science and Technology》 SCIE EI CAS CSCD 2004年第2期2255-2258,共4页
Diamond-like carbon (DLC) films are deposited on quartz substrate using pure CH4 in the surface wave plasma equipment. A direct current negative bias up to -90 V is applied to the substrate to investigate the bias eff... Diamond-like carbon (DLC) films are deposited on quartz substrate using pure CH4 in the surface wave plasma equipment. A direct current negative bias up to -90 V is applied to the substrate to investigate the bias effect on the film characteristics. Deposited films are characterized by Raman spectroscopy, infrared (IR) and ultraviolet-visible absorption techniques. There are two broad Raman peaks around 1340 cm-1 and 1600 cm-1 and the first one has a greater sp3 component with an increased bias. Infrared spectroscopy has three sp3 C-H modes at 2852 cm-1, 2926 cm-1 and 2962 cm-1, respectively and also shows an intensity increase with the negative bias. Optical band gap is calculated from the ultraviolet-visible absorption spectroscopy and the increased values with negative bias and deposition time are obtained. After a thermal anneal at about 500℃ for an hour to the film deposited under the bias of-90 V, we get an almost unchanged Raman spectrum and a peak intensity-reduced IR signal, which indicates a reduced H-content in the film. Meanwhile the optical band gap changed from 0.85 eV to 1.5 eV. 展开更多
关键词 diamond like carbon (DLC) Raman spectrum infrared absorption spectroscopy optical band gap
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Attenuated Total Reflection Surface-Enhanced Infrared Absorption Spectroscopy: a Powerful Technique for Bioanalysis 被引量:1
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作者 Jian Li Bo Zheng +5 位作者 Qian-Wen Zhang Yang Liu Cai-Feng Shi Feng-Bin Wang Kang Wang Xing-Hua Xia 《Journal of Analysis and Testing》 EI 2017年第1期71-83,共13页
Attenuated total reflection surface-enhanced infrared absorption spectroscopy(ATR-SEIRAS)has recently been proven to be a powerful tool for bioanalysis.It enables in situ and in real-time observation of dynamic proces... Attenuated total reflection surface-enhanced infrared absorption spectroscopy(ATR-SEIRAS)has recently been proven to be a powerful tool for bioanalysis.It enables in situ and in real-time observation of dynamic processes occurring on specific interface,revealing rich structural and functional information of biomolecules at sub monolayer level.The aim of this general review was to give an overview of the cutting edge applications of ATRSEIRAS.We start with description of the basic configuration of the standard ATR-SEIRAS platform.The enhanced mechanisms and methods to fabricate enhanced substrates are then presented.We discuss the recent developments,challenges and applications of ATR-SEIRAS in bioanalysis,mainly focusing on DNA analysis,protein behavior and cell properties.Finally,further development of the ATRSEIRAS technique with enhanced sensitivity,improved time and spatial resolutions will be prospected. 展开更多
关键词 Surface-enhanced infrared absorption spectroscopy ATR-SEIRAS BIOANALYSIS DNA PROTEIN CELL
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Photoelectric Conversion Efficiency Enhanced by Tilting Monocrystalline Silicon Photovoltaic Devices 被引量:1
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作者 LIJian-ming CHONGMing +4 位作者 XUJia-dong HUChuan-xian DUANXiao-feng GAOMin WANGFeng-lian 《Semiconductor Photonics and Technology》 CAS 2004年第2期101-103,107,共4页
Based on the idea of tilting a photoelectric conversion device,the monocrystalline silicon p-n junction device was tilted to make light incident upon the device at an angle of 45° with the normal of the device su... Based on the idea of tilting a photoelectric conversion device,the monocrystalline silicon p-n junction device was tilted to make light incident upon the device at an angle of 45° with the normal of the device surface,resulting in infrared multiple-internal-reflection inside the device.The internal reflection leads to path length increase of infrared light,making the enhancement of infrared absorption of the device.An increase of 11% in energy conversion efficiency has been obtained through tilting the device. 展开更多
关键词 SILICON Photoelectric conversion infrared absorption
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