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Anomalous quality factor evolution of induced transparency in a virtualized coupled-oscillator system

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 148-155页

作者： Yunhan yang Han Jia Tuo Liu Yuzhen yang Jun yang Key Laboratory of Noise and Vibration Research Institute of Acoustics Chinese Academy of Sciences University of Chinese Academy of Sciences State Key Laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences

The phenomenon of induced transparency, characterized by a high quality(Q) factor, holds significant importance in the fields of high-precision sensing, energy storage and wave manipulation. Conventional transparency systems are often constrained by the limited experimentally accessible parameter space and the lack of independent control over intrinsic parameters, thereby hindering advanced research on high-Q effects. Here we propose a virtualized coupled-oscillator system that enables reconfigurable induced transparency in the reflection spectrum. By virtually incorporating a pair of coupled oscillators into an individual acoustic meta-atom, we achieve the manipulation of induced transparency in a decoupled, wide-ranging, and elaborate manner. Exploiting the diverse evolutions across the intrinsic parameter space, we show experimentally a counter-intuitive increase in the Q-factor of the transparency window, which is attributed to the enhanced dissipation of the bright ***, a constant group delay at the center frequency is observed accompanying this evolution. Our work demonstrates an intriguing platform as well as a novel strategy to engineer high-Q induced transparency phenomenon, and paves the way towards applications in programmable acoustic sensors, filters and slow-wave devices.

关键词： induced transparency acoustic meta-atom high quality-factor scattering programmable intrinsic parameter

NanoSIMS analytical technique and its applications in earth sciences

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Science China Earth Sciences 2015年第9期58卷 1758-1767页

作者： yang wei HU Sen ZHANG JianChao HAO JiaLong LIN yangTing Key Laboratory of Earth and Planetary Physics Institute of Geology and Geophysics Chinese Academy of Sciences

Despite the significant improvement on spatial resolution, NanoSIMS still preserves relatively high mass resolution, sensitivity, and analytical precision. It has become an important analytical platform to determine chemical compositions of solid materials, and has been widely used in space, earth, life, and materials sciences, etc. By using a Cs＋ ion beam with a size as small as 50 nm scanning over sample surfaces, we are able to obtain high spatial resolution images of up to 7 species simultaneously. when utilizing Faraday cup, high analytical precision of 0.3‰-0.5‰ （1SD） for C, O and S isotopic analysis can be achieved. Although this precision level is still lower than that of conventional SIMS, it already meets the major requirements of Earth Sciences. In 2011, the first NanoSIMS of China （Cameca NanoSIMS 50L） was installed at Institute of Geology and Geophysics, Chinese Academy of Sciences. Based on the working mechanism and analytical modes of the instrument, this paper will systematically introduce the analytical methods established with the NanoSIMS and their potential applications in earth sciences. These methods include trace element distribution images in mineral zoning, high spatial resolution （2-5/am） Pb-Pb and U-Pb dating, water content and H isotopic analysis for silicate glass and apatite, C isotopic analysis for diamond and graphite, O isotopic analysis for carbonate, S isotopic analysis for sulfides. In addition, the specific requirements for sample preparation will also be introduced in order to facilitate domestic earth scientists＇ use.

关键词： NanoSIMS micro-beam analysis elemental distribution images Pb-Pb and U-Pb dating stable isotopes

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STRUCTURE AND PROPERTIES OF RE-Ni-B-Al_2O_3 COATING MATERIAL

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Acta Metallurgica Sinica(English Letters) 1997年第1期10卷 56-60页

作者： Z.C Guo X.w yang, H.K Lin, Z.Y wang and M. wang(Department of Metallurgy, Kunming University of Science and Technology Kunming 650093, China) Kunming Univ of Science and Technology Kunming China

The effects of heat treatment temperature on the hardness, wear resistance and structure of a coating material consisting of Ni-0.45wt% RE4.8wt% B-6.2wt% Al2O3 have been discussed. The results showed that the hachess and wear resistance of the composite material reach the optimal values when heating temperature rises to 350℃ and 500℃ respectivelg. X-ray diffraction and scanning electron microscopy indicate that the composite material is amorphous in the as-coating state. The crystallized temperature of Ni-B alloy is increased when RE and Al2O3 particles are inserted. The hardness and wear resistance of the composite are raised obviously with addition of RE and Al2O3 particles.

关键词： RE-Ni-B-Al_2O_3 composite material amorphous structure

Nanoscale mapping of optically inaccessible bound-states-in-the-continuum

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Light(Science & Applications) 2022年第2期11卷 188-196页

作者： Zhaogang Dong Zackaria Mahfoud Ramón Paniagua-Domínguez Hongtao wang Antonio I.Fernández-Domínguez Sergey Gorelik Son Tung Ha Febiana Tjiptoharsono Arseniy I.Kuznetsov Michel Bosman Joel K.w.yang Institute of Materials Research and Engineering A*STAR(Agency for ScienceTechnology and Research)2 Fusionopolis Way#08-03 Innovis138634 SingaporeSingapore Department of Materials Science and Engineering National University of Singapore9 Engineering Drive 1117575 SingaporeSingapore Singapore University of Technology and Design 8 Somapah Road487372 SingaporeSingapore Departamento de Física Teórica de la Materia Condensada and Condensed Matter Physics Center Universidad Autónoma de Madrid28049 MadridSpain Singapore Institute of Food and Biotechnology Innovation A*STAR(Agency for ScienceTechnology and Research)31 Biopolis Way#01-02 Nanos138669 SingaporeSingapore

Bound-states-in-the-continuum(BIC)is an emerging concept in nanophotonics with potential impact in applications,such as hyperspectral imaging,mirror-less lasing,and nonlinear harmonic *** true BIC modes are nonradiative,they cannot be excited by using propagating light to investigate their optical *** this paper,for the 1st time,we map out the strong near-field localization of the true BIC resonance on arrays of silicon nanoantennas,via electron energy loss spectroscopy with a sub-1-nm electron *** systematically breaking the designed antenna symmetry,emissive quasi-BIC resonances become *** gives a unique experimental tool to determine the coherent interaction length,which we show to require at least six neighboring antenna *** importantly,we demonstrate that quasi-BIC resonances are able to enhance localized light emission via the Purcell effect by at least 60 times,as compared to unpatterned *** work is expected to enable practical applications of designed,ultra-compact BIC antennas such as for the controlled,localized excitation of quantum emitters.

关键词： antenna states mapping

High-throughput fabrication of large-scale metasurfaces using electron-beam lithography with SU-8 gratings for multilevel security printing

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Photonics Research 2023年第3期11卷 I0040-I0047页

作者： YOU SIN TAN HAO wANG HONGTAO wANG CHENGFENG PAN JOEL K.w.yang Singapore University of Technology and Design 487372 SingaporeSingapore Institute of Materials Research and Engineering A*STAR(Agency for ScienceTechnology and Research)138634 SingaporeSingapore

The field of metasurface research has rapidly developed in the past ***-beam lithography(EBL)is an excellent tool used for rapid prototyping of ***,Gaussian-beam EBL generally struggles with low *** conjunction with the recent rise of interest in metasurfaces made of low-index dielectric materials,we propose in this study the use of a relatively unexplored chemically amplified resist,SU-8 with EBL,as a method for rapid prototyping of low-index *** demonstrate the use of SU-8 grating on silicon for cost-efficient fabrication of an all-dielectric multilevel security print for anti-counterfeiting purposes,which encrypt different optical information with different light illumination conditions,namely,bright-field reflection,dark-field reflection,and cross-polarized *** large-scale print(1 mm^(2))could be exposed in a relatively short time(~11 min)due to the ultrahigh sensitivity of the resist,while the feature size of~200 nm was maintained,demonstrating that SU-8 EBL resist serves as a good candidate for rapid prototyping of metasurface *** results could find applications in the general area of increasing EBL patterning speed for a variety of other devices and structures.

关键词： lithography beam dielectric

High-speed Train Aerodynamic Investigation with a New Moving Model Rig

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High-speed Train Aerodynamic Investigation with a New Moving...

Silica-based microcavity fabricated by wet etching

2016海峡两岸流体力学研讨会

作者： G.w.yang J.H.Song Q.S.yang D.L.Guo LMFS of Institute of Mechanics Chinese Academy of Sciences

To improve the test ability of high-speed train aerodynamics, a new moving model rig was established in Institute of Mechanics, Chinese Academy of Sciences in 2014, in which the train model is accelerated indirectly by high compressed air and decelerated by the induced non-contact magnetic force. The rig can finish the aerodynamic tests of 1:8 scale three-car train models to the speed of up to 500km/h for single-train and twotrain passing by each other in tunnel or in open air. In the past two years, for the rig, pressure measurement systems on tunnel model and on moving train model have been developed, and aerodynamic force measurement systems on the moving train model also have been preliminary realized. In the paper, the design principle of the rig and some experimental results will be emphatically reported.(1) The pressure waves are measured along the single-track and double-track tunnel models of Chinese railway standard with 76m2 and 100m2, respectively. The propagation and superposition characteristics of tunnel pressure waves are investigated. It is indicated that the instantaneous pressure waves are agreed with the calculated results and are corresponded with theoretical analyses.(2) The pressure distributions on the train model with different test speeds and different running scenes are measured. For the running scene of single-train in open air, the measuring pressure distributions agree very well with the CFD simulation. For the running scenes of single-train or two-train passing by in tunnel, the good correlation of the instantaneous pressure waves on the train model and on the tunnel wall can be obtained.(3) Because the development of aerodynamic force balance for the moving train model is completely different with the traditional balance for the wind tunnel test, up to now, only steady aerodynamic drag and lift coefficients for single-train running in open air can be measured and compared with CFD calculation. The measuring balance for instantaneous a

关键词： moving model rig high-speed train aerodynamics aerodynamic pressure measuring force balance

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Chinese Physics B 2017年第5期26卷 195-198页

作者：龙浩杨文应磊莹张保平 Department of Electronic Engineering Optoelectronics Engineering Research Center Xiamen University Xiamen 361005 China

Silica whispering gallery mode（wGM） microcavities were fabricated by the buffered oxide etcher and potassium hydroxide wet etching technique without any subsequent chemical or laser treatments. The silicon pedestal underneath was an octagonal pyramid, thus providing a pointed connection area with the top silica microdisk while weakly influencing the resonance modes. The sidewalls of our microdisks were wedge shaped, which was believed to be an advantage for the mode confinement. Efficient coupling from and to the 60 μm diameter microdisk structure was achieved using tapered optical fibres, exhibiting a quality factor of 1.5×10^4 near a wavelength of 1550 nm. Many resonance modes were observed, and double transverse electric modes were identified by theoretical calculations. The quality factor of the microdisks was also analysed to deduce the cavity roughness. The wet etching technique provides a more convenient avenue to fabricate wGM microdisks than conventional fabrication methods.

关键词： etching gallery fibres silica pyramid roughness subsequent confinement hydroxide shaped

Study of the CKM angleγsensitivity using flavor untagged B_(s)^(0)→D^(+)^(0)Ф decays

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Chinese Physics C 2021年第2期45卷 56-92页

作者： D.Ao D.Decamp w.B.Qian S.Ricciardi H.Sazak S.T’Jampens V.Tisserand Z.R.wang Z.w.yang S.N.Zhang X.K.Zhou University of Chinese Academy of Sciences Beijing 100049China UnivGrenoble Alpes UnivSavoie Mont BlancCNRSIN2P3-LAPPAnnecyFrance STFC Rutherford Appleton Laboratory DidcotUnited Kingdom UniversitéClermont Auvergne CNRS/IN2P3LPCClermont-FerrandFrance Center for High Energy Physics Tsinghua UniversityBeijing 100084China School of Physics State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China

A sensitivity study on the measurement of the CKM angle γ from B_(s)^(0)→D^(+)^(0)Ф decays is conducted us-ing the D-meson reconstructed in the quasi flavour-specific modes Kπ,K3π,and Kππ^(0),as well as CP-eigenstate modes KK and m,where the notation DO corresponds toa D0 or D0 *** LHCb experiment is presented as a use case.A statistical uncertainty of approximately 8°-19°can be achieved with the pp collision data collcted in the LHCb experiment from 2011 to *** sensitivity to r should be of the order 3°-8°after accumulating 23 fb^(-1) of pp collision data by 2025,whereas it is expected to improve further by 300 fb^(-1) by the second half of the 2030 *** accuracy is dependent on the strong parameters r and og,which together with ydescribe the interfer-ence between the leading ampliudes of the B_(s)^(0)→D^(+)^(0)Ф decays.

关键词： sensitivity study CKM angleyγ B_(s)^(0)→D^(+)^(0)Фdecays

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G蛋白偶联受体激酶的研究进展

世界华人消化杂志 2006年第16期14卷 1602-1607页

作者：杨雯夏时海武警医学院附属医院消化内科胰腺中心天津市300162

G蛋白偶联受体激酶(GRKs)属丝氨酸／酪氨酸蛋白激酶家族,其亚型广泛存在于各种组织, 能特异地使活化的G蛋白偶联受体(GPCR)发生磷酸化及脱敏化,从而终止后者介导的信号转导通路．现就G蛋白偶联受体激酶的结构、种类及分布、生物学功能... 详细信息

G蛋白偶联受体激酶(GRKs)属丝氨酸／酪氨酸蛋白激酶家族,其亚型广泛存在于各种组织, 能特异地使活化的G蛋白偶联受体(GPCR)发生磷酸化及脱敏化,从而终止后者介导的信号转导通路．现就G蛋白偶联受体激酶的结构、种类及分布、生物学功能及与疾病关系的新进展进行总结与概括,并对其发展进行了展望．

关键词： G蛋白偶联受体激酶磷酸化受体脱敏