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Principles to tailor the saturable and reverse saturable absorption of epsilon-near-zero material

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Photonics Research 2021年第5期9卷 678-686页

作者： HAO MA YUANAN ZHAO YUCHEN SHAO YAFEI LIAN WEILI ZHANG GUOHANG HU YUXIN LENG JIANDA SHAO Laboratory of Thin Film Optics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China key Laboratory of Materials for High Power Laser Chinese Academy of SciencesShanghai 201800China State key Laboratory of High Field Laser Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800China Hangzhou Institute for Advanced Study University of Chinese Academy of SciencesHangzhou 310024China

Indium tin oxide(ITO) films have recently emerged as a new class of functional materials for nonlinear optical(NLO) devices due to their exotic properties around epsilon-near-zero(ENZ) wavelength. Here, we experimentally investigated and tailored the NLO absorption properties of ITO films. The NLO absorption response of ITO films is investigated by using the femtosecond Z-scan measurement technique at two different wavelengths of 1030 nm(out of ENZ region) and 1440 nm(within ENZ region). Interestingly, we observed conversion behavior from saturable absorption(SA) to reverse saturable absorption(RSA) at 1030 nm with the increasing incident laser intensity, whereas only SA behavior was observed at 1440 nm. We demonstrate that SA behavior was ascribed to ground-state free electrons bleaching in the conduction band, and RSA was attributed to three-photon absorption. Moreover, results reveal that ITO film shows more excellent SA performance at 1440 nm with a nonlinear absorption coefficient of ~-23.2 cm∕GW and a figure of merit of ~1.22 × 10^(-16) esu · ***, we tailored the SA and RSA behaviors of ITO films at 1030 and 1440 nm wavelengths via post-annealing treatment. The modulatable NLO absorption was ascribed to the changing of free-carrier concentration in ITO films via annealing treatment. The experimental findings offered an inroad for researchers to tailor its NLO absorption properties by changing the free-carrier concentration through chemical modification such as annealing, oxidation, or defect implantation. The superior and tunable nonlinear optical response suggests that ITO film might be employed as a new class material with potential applications in novel optical switches or optical limiters to realize the all-optical information process.

关键词： saturable absorption annealing

Research progress in quantum key distribution

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Chinese Physics B 2023年第12期32卷 129-143页

作者：张春雪吴丹崔鹏伟马俊驰王玥安俊明 State key Laboratory on Integrated Optoelectronics Institute of SemiconductorsChinese Academy of SciencesBeijing 100083China center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China College of Materials Science and Opto-Electronic Technology University of Chinese Academy of SciencesBeijing 100049China

Quantum key distribution(QKD)is a sophisticated method for securing information by leveraging the principles of quantum *** objective is to establish a confidential key between authorized partners who are connected via both a quantum channel and a classical authentication *** paper presents a comprehensive overview of QKD protocols,chip-based QKD systems,quantum light sources,quantum detectors,fiber-based QKD networks,space-based QKD systems,as well as the applications and prospects of QKD technology.

关键词： quantum key distribution(QKD) sources detectors chip

Interface of transition metal oxides at the atomic scale

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Science China(Physics,Mechanics & Astronomy) 2016年第9期59卷 1-9页

作者： Tong-Tong Shang Xin-Yu Liu Lin Gu Beijing National Laboratory Jor Condensed Matter Physics Institute of PhysicsChinese Academy of Sciences Beijing 100190China Collaborative Innovation center of Quantum Matter Beijing 100190China

Remarkable phenomena arise at well-defined heterostructures, composed of transition metal oxides, which is absent in the bulk counterpart, providing us a paradigm for exploring the various electron correlation effects. The functional properties of such heterostructures have attracted much attention in the microelectronic and renewable energy fields. Exotic and unexpected states of matter could arise from the reconstruction and coupling among lattice, charge, orbital and spin at the interfaces. Aberration-corrected scanning transmission electron microscopy （STEM） is a powerful tool to visualize the lattice structure and electronic structure at the atomic scale. In the present study some novel phenomena of oxide heterostructures at the atomic scale are summarized and pointed out from the perspective of electron microscopy.

关键词： interface transition metal oxides STEM strong correlation

Label-free quantification proteomics reveals novel calcium binding proteins in matrix vesicles isolated from mineralizing Saos-2 cells

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Label-free quantification proteomics reveals novel calcium b...

Experimental realization of honeycomb borophene

第八届全国医学生物化学与分子生物学第五届全国临床应用生物化学与分子生物学2013华东六省一市生物化学与分子生物学联合学术研讨会

作者： Xiaoying Zhou Yazhou Cui Jing Luan Xiaoyan Zhou Genglin Zhang Xiumei Zhang Jinxiang Han Shandong Academy of Medical Sciences Shandong Medical Biotechnological CenterKey Laboratory for Biotech Drugs of the Ministry of Health School of Medicine and Life Sciences University of Jinan-Shandong Academy of Medical Science

Matrix vesicles(MVs) involved in the initiation of mineralization by deposition of hydroxyapatite(HA) in their lumen are released by the budding of mineralization-competent cells during skeletogenesis and bone *** identify additional mineralization-related proteins,MVs were isolated from non-stimulated and stimulated Saos-2 cells in culture via an ExoquickTM approach and the corresponding proteomes were identified and quantified with label-free quantitative proteome *** isolated MVs were confirmed by electron microscopy,alkaline phosphatase activity(ALP),biomarkers,and mineral formation ***-free quantitative proteome analysis revealed that 19 calcium binding proteins(CaBPs),including Grp94,calnexin,calreticulin,calmodulin,and S100 A4/A10,were up-regulated in MVs of Saos-2 cells upon stimulation of *** result provides new clues to study the mechanism of the initiation of MV-mediated mineralization.

关键词： mineralization matrix vesicles ExoquickTM label-free LC-MS/MS calcium-binding Proteins

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Science Bulletin 2018年第5期63卷 282-286页

作者： Wenbin Li Longjuan Kong Caiyun Chen Jian Gou Shaoxiang Sheng Weifeng Zhang Hui Li Lan Chen Peng Cheng Kehui Wu Institute of Physics Chinese Academy of Sciences Beijing 100190 China School of Physical Sciences University of Chinese Academy of Sciences Beijing 100049 China School of Physics and Electronics Henan University Kaifeng 475004 China Beijing Advanced Innovation center for Soft Matter Science and Engineering Beijing University of Chemical Technology Beijing 100029 China Collaborative Innovation center of Quantum Matter Beijing 100871 China

We report the successful preparation of a purely honeycomb,graphene-like borophene,by using an Al(11 1) surface as the substrate and molecular beam epitaxy(MBE) growth in ultrahigh *** tunneling microscopy(STM) images reveal perfect monolayer borophene with planar,non-buckled honeycomb lattice similar as *** calculations show that the honeycomb borophene on Al(1 1 1) is energetically ***,nearly one electron charge is transferred to each boron atom from the Al(1 1 1) substrate and stabilizes the honeycomb borophene structure,in contrast to the negligible charge transfer in case of borophene/Ag(1 1 1).The existence of honeycomb 2 D allotrope is important to the basic understanding of boron chemistry,and it also provides an ideal platform for fabricating boron-based materials with intriguing electronic properties such as Dirac states.

关键词： Borophene Honeycomb structure2 D materials

Pathogenic microorganism biobanking in China

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Journal of Biosafety and Biosecurity 2019年第1期1卷 31-33页

作者： Mengnan Jiang Bo Liu Qiang Wei Office of Laboratory Management Chinese Center for Disease Control and PreventionBeijing 102206China

Pathogenic microbial strains and specimens are crucial national and strategic biological *** and management of the pathogenic microbial resources,as an integral component of biosafety,play an important role in the national biosafety system and in the overall framework of national *** preservation and management rely on the effective designation of preservation institutions,strengthened operation and management of preservation institutions,standardized description and data specifications,establishment of preservation information management systems,and promotion of resource-sharing and *** protection and efficient sharing and utility of pathogenic microbial resources are expected to make a unique contribution to the sustainable development of the national economy.

关键词： Pathogenic microorganism Preservation institutions Management

Investigating the components of the optically stimulated luminescence signals of quartz grains from sand dunes in China

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Investigating the components of the optically stimulated lum...

Giant barocaloric effect and negative thermal expansion in MM'X materials

中国科学院地质与地球物理研究所2015年度（第15届）学术年会

作者： Zhijun Gong Jimin Sun Tongyan Lü key Laboratory of Cenozoic Geology and Environment Institute of Geology and Geophysics Chinese Academy of Science CAS center for Excellence in Tibetan Plateau Earth Sciences Institute of Geomechanics Chinese Academy of Geological Sciences

The optically stimulated luminescence(OSL) signals from quartz consist of several physically distinct components, which are commonly referred to as fast, medium and slow components. In this study, the OSL components of quartz from the Taklimakan Desert and the Hunshandake sandy land in north China are investigated. Our results show that the relative contributions of OSL components to the bulk OSL signal can be significantly different among quartz grains from both deserts. Laboratory dosing, optical bleaching and heating experiments are used to test their effects on the relative contributions of quartz OSL components. It is found that cycles of dosing and optical bleaching have insignificant impact on the relative contributions of quartz OSL components, while heating to high temperature(500 C) can significantly enhance the contribution of the fast component to the bulk OSL signals, especially for quartz samples from the Taklimakan Desert. Such results suggest that the different heating history of natural quartz grains plays an important role in controlling OSL components. Additionally, the quartz grains from the Hunshandake sandy land can easily be distinguished from those of the Taklimakan Desert, by using a ternary plot of fast-medium-slow components. The quartz grains from the Hunshandake sandy land exhibit a much stronger fast component than those from the Taklimakan Desert. This can be explained by that the quartz grains from the Hunshandake sandy land are mainly of igneous origin, while most of the quartz grains from the Taklimakan Desert are of low grade metamorphic origin.

关键词： Quartz OSL Component Northern desert Provenance

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Giant barocaloric effect and negative thermal expansion in M...

Two styles of plate tectonics in Earth’s history

中国晶体学会第六届学术年会暨会员代表大会（极端条件晶体材料分会）

作者： F.X.Hu Q.Z.Huang Y.Y.Zhao R.R.Wu J.Wang J.R.Sun B.G.Shen State key Laboratory of Magnetism Institute of PhysicsChinese Academy of Sciences School of Physical Sciences University of Chinese Academy of Sciences NIST center for Neutron Research National Institute of Standards and Technology

Recently,the ternary metallic compounds MM’X with hexagonal NiIn-type structure have attracted much attention due to their rich magnetic and structural *** resolution neutron diffraction was performed to study the cr...

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Science Bulletin 2020年第4期65卷 329-334页

作者： Yong-Fei Zheng Guochun Zhao CAS key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space SciencesUniversity of Science and Technology of ChinaHefei 230026China Department of Earth Sciences University of Hong KongHong KongChina The center of Excellence for Comparative Planetology Chinese Academy of Sciences(CAS)Hefei 230026China Department of Geology Northwest UniversityXi’an 710069China

When plate tectonics started to occur on Earth and how it has evolved through time are two of the most fundamental questions in earth sciences. While gravity-driven subducting has been accepted as a critical condition for the operation of plate tectonics on Earth, it is intriguing how the dynamic regime and thermal state of subduction zones have affected the style of plate tectonics in Earth’s history. The metamorphic rocks of regional distribution along convergent plate boundaries record reworking of crustal rocks through dehydration and melting at lithospheric depths. The property of regional metamorphism is determined by both dynamic regime and thermal state of plate margins. The two variables have secularly evolved in Earth’s history, which is recorded by changes in the global distribution of metamorphic facies series through time. This results in two styles of plate tectonics. Modern-style plate tectonics has developed since the Neoproterozoic when plate margins were rigid enough for cold subducting, whereas ancient-style plate tectonics has developed since the Archean when plate margins were ductile enough for warm subducting. Such a difference is primarily dictated by higher mantle temperatures in the Archean than in the Phanerozoic. The development of plate subduction in both cold and warm realms is primarily dictated by the rheology of plate margins. This leads to a holistic model for the style of plate tectonics during different periods in Earth’s history.

关键词： Plate tectonics Mobile belt Subduction zone Extreme metamorphism Thermal state Dynamic regime