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| 1 | Rattle-Type Silica Colloidal Particles Prepared by a Surface- Protected Etching Process显示文摘This paper explores the capability of the“surface-protected etching”process for the creation of rattle-type SiO_(2)@void@SiO_(2) colloidal structures featuring a mesoporous silica shell and a mesoporous movable silica core.The surface-protected etching process involves stabilization of the particle surface using a polymer ligand,and then selective etching of the interior to form hollow structures.In this paper,this strategy has been extended to the formation of rattle-like structures by etching SiO_(2)@SiO_(2) core shell particles which are synthesized by a two-step sol gel process.The key is to introduce a protecting polymer of polyvinylpyrrolidone(PVP)to the surface of both core and shell in order to tailor their relative stability against chemical etching.Upon reacting with NaOH,the outer layer silica becomes a hollow shell as only the surface layer is protected by PVP and the interior is removed,while the core remains its original size thanks to the protection of PVP on its surface.This process can be carried out at room temperature without the need of additional templates or complicated heterogeneous coating procedures.The etching process also results in the rattle-type colloids having mesoscale pores with two distinct average sizes.In our demonstration of a model drug delivery process,such mesoporous structures show an interesting two-step elution profile which is believed to be related to the unique porous rattle structures. | Qiao Zhang Jianping Ge James Goebl Yongxing Hu Zhenda Lu Yadong Yin | 2009 | Nano Research2009，2，7： | 18 |
| 2 | Self-Assembly and Photocatalysis of Mesoporous TiO2 Nanocrystal Clusters显示文摘有大表面区域和提高的 photocatalytic 活动的锐钛矿 TiO2 的 Mesoporous nanocrystal 簇成功地被综合了。合成包含进亚微米簇,有硅石层的这些簇的涂层,移开器官的 ligands 并且改进簇的 crystallinity 的热处理,和暴露 mesoporous 催化剂的最后搬迁的硅石的恐水病的 TiO2 nanocrystals 自己组装。在硅石涂层的帮助下,簇不仅维持他们的小谷物尺寸而且在高温度在锻烧以后保留他们的 mesoporous 结构(与象 277 m2/g 一样高的赌注表面区域) 。蚀刻 SiO2 也导致在水里有高 dispersity 的簇。我们能识别最佳的锻烧温度生产拥有高 crystallinity 和大表面区域的 TiO2 nanocrystal 簇,因此由紫外光在照明下面在器官的分子的分解显示出优秀催化效率。与氮的方便的做在可见的光和自然日光把这些 nanocrystal 簇变换成活跃光催化剂。用 nanocrystals 形成明确的 mesoporous 簇的策略为与提高的活动和稳定性设计光催化剂答应一个万用、有用的方法。 | Qiao Zhang Ji-Bong Joo Zhenda Lu Michael Dahl Diana Q. L. Oliveira Miaomiao Ye Yadong Yin | 2011 | Nano Research2011，4，1： | 17 |
| 3 | Biochemical sensing in graphene-enhanced microfiber resonators with individual molecule sensitivity and selectivity显示文摘Photonic sensors that are able to detect and track biochemical molecules offer powerful tools for information acquisition in applications ranging from environmental analysis to medical diagnosis.The ultimate aim of biochemical sensing is to achieve both quantitative sensitivity and selectivity.As atomically thick films with remarkable optoelectronic tunability,graphene and its derived materials have shown unique potential as a chemically tunable platform for sensing,thus enabling significant performance enhancement,versatile functionalization and flexible device integration.Here,we demonstrate a partially reduced graphene oxide(prGO)inner-coated and fiber-calibrated Fabry-Perot dye resonator for biochemical detection.Versatile functionalization in the prGO film enables the intracavity fluorescent resonance energy transfer(FRET)to be chemically selective in the visible band.Moreover,by measuring the intermode interference via noise canceled beat notes and locked-in heterodyne detection with Hz-level precision,we achieved individual molecule sensitivity for dopamine,nicotine and single-strand DNA detection.This work combines atomic-layer nanoscience and high-resolution optoelectronics,providing a way toward high-performance biochemical sensors and systems. | Zhongxu Cao Baicheng Yao Chenye Qin Run Yang Yanhong Guo Yufeng Zhang Yu Wu Lei Bi Yuanfu Chen Zhenda Xie Gangding Peng Shu-Wei Huang Chee Wei Wong Yunjiang Rao | 2019 | Light(Science & Applications)2019，8，1： | 8 |
| 4 | Drone-based entanglement distribution towards mobile quantum networks显示文摘Satellites have shown free-space quantum-communication ability;however,they are orbit-limited from full-time all-location coverage.Meanwhile,practical quantum networks require satellite constellations,which are complicated and expensive,whereas the airborne mobile quantum communication may be a practical alternative to offering full-time all-location multi-weather coverage in a cost-effective way.Here,we demonstrate the first mobile entanglement distribution based on drones,realizing multi-weather operation including daytime and rainy nights,with a Clauser-Horne-Shimony-Holt S-parameter measured to be 2.41±0.14 and 2.49±0.06,respectively.Such a system shows unparalleled mobility,flexibility and reconfigurability compared to the existing satellite and fiber-based quantum communication,and reveals its potential to establish a multinode quantum network,with a scalable design using symmetrical lens diameter and single-mode-fiber coupling.All key technologies have been developed to pack quantum nodes into lightweight mobile platforms for local-area coverage,and arouse further technical improvements to establish wide-area quantum networks with high-altitude mobile communication. | Hua-Ying Liu Xiao-Hui Tian Changsheng Gu Pengfei Fan Xin Ni Ran Yang Ji-Ning Zhang Mingzhe Hu Jian Guo Xun Cao Xiaopeng Hu Gang Zhao Yan-Qing Lu Yan-Xiao Gong Zhenda Xie Shi-Ning Zhu | 2020 | National Science Review2020，7，5： | 6 |
| 5 | Electrically controllable laser frequency combs in graphene-fibre microresonators显示文摘Laser frequency combs emitting ultrafast pulses of light,at equidistantly discrete frequencies,are cornerstones of modern information networks.In recent years,the generation of soliton combs in microcavities with ultrahighquality factors has established microcombs as out-oflaboratory tools.However,the material and geometry of a laser cavity,which determine comb formation,are difficult to electrically tune.Such dynamic control can further enrich the diversity of comb outputs and help to actively stabilize them. | Chenye Qin Kunpeng Jia Qianyuan Li Teng Tan Xiaohan Wang Yanhong Guo Shu-Wei Huang Yuan Liu Shining Zhu Zhenda Xie Yunjiang Rao Baicheng Yao | 2020 | Light(Science & Applications)2020，9，1： | 5 |
| 6 | DESERTIFICATION IN CHINA: STATUS, TRENDS, AND STRATEGIES显示文摘Based on defition of desertification in Intematonal Convention toCombat Desertfication. and on China’s situation, desenification is found notonly In and and senuand ropons but also in huAnd and subhunud ropons. InChina the desertified land area has already reached 1,1 17,000kin2, or 11.6percen of China’s total land area. Of which 33.2 percent is caused by winderosion, 33.8 percen by water erosion and 33.0 percen by physical andchemical actions. Besides- another 535,000 kin2 of land is susceptible to wind erosion, 875,000 km2 to water erosion and 173,000 km2 to saliruzation.Land desertification in China is the result Of over growth of populahon and irrational human aCtivities, such as abuse of water res ou rces, overculti vati on’overgrazlng. deforestaion, vopation destruCtion and envirormental polluton caused by industry and nurung under fragile ecological conditions.In recat decades, reverse tronds have occurred in mpons under proper conrol.However. on the Whole it has beenexpanding. For instance, sandy desertification develops at an annual rate of 1.39 percen in agropastoral ropons in Northem China. This paper is supposed to evaluate the curren conrol measures and practices of desertification- in ligh of the distributon characteristics and developmedl trend of land desertification in China. | Zhu Zhenda Cui Shuhong(Insttute of Geography, CAS, Beijing 100101)Pcople’s Republic of China | 1995 | Journal of Geographical Sciences1995，5，3： | 2 |
| 7 | Narrowband photonic quantum entanglement with counterpropagating domain engineering显示文摘Narrowband photonic entanglement is a crucial resource for long-distance quantum communication and quantum information processing,including quantum memories.We demonstrate the first polarization entanglement with 7.1 GHz inherent bandwidth by counterpropagating domain engineering,which is also confirmed by Hong–Ou–Mandel interference with 155-ps base-to-base dip width and(97.1±0.59)%high visibility.The entanglement is harnessed with 18.5-standard-deviations Bell inequality violation,and further characterized with state tomography of(95.71±0.61)%fidelity.Such narrowband entanglement sets a cornerstone for practical quantum information applications. | YI-CHEN LIU DONG-JIE GUO RAN YANG CHANG-WEI SUN JIA-CHEN DUAN YAN-XIAO GONG ZHENDA XIE SHI-NING ZHU | 2021 | Photonics Research2021，9，10： | 1 |
| 8 | Trends of desertification and its rehabilitation in China显示文摘 | Zhu Zhenda Wang Tao | 1993 | Desertification Control Bulletin1993，22，： | 1 |
| 9 | 2 μm optical frequency comb generation via optical parametric oscillation from a lithium niobate optical superlattice box resonator显示文摘Optical parametric oscillators(OPOs) can downconvert the pump laser to longer wavelengths with octave separation via χ^((2)), which is widely used for laser wavelength extension including mid-infrared(MIR) generation.Such a process can be integrated in monolithic resonators, being compact and low in threshold. In this work, we show that the monolithic χ^((2))mini-OPO can also be used for optical frequency comb generation around 2096 nm and enters the boundary of MIR range. A new geometry called an optical superlattice box resonator is developed for this realization with near-material-limited quality factor of 4.0 × 10^(7). Only a continuous-wave near-infrared pump laser is required, with OPO threshold of 80 mW and output power up to 340 mW. Revival temporal profiles are measured at a detectable repetition frequency of 1.426 GHz, and narrow beat note linewidth of less than 10 Hz shows high comb coherence. These results are in good agreement with our simulation for a stable comb generation. Such an OPO-based comb source is useful for carbon dioxide sensing or the mine prospect applications and can be generalized to longer MIR wavelengths for general gas spectroscopy. | Xiaohan Wang Kunpeng Jia Mengwen Chen Shanshan Cheng Xin Ni Jian Guo Yihao Li Huaying Liu Liyun Hao Jian Ning Gang Zhao Xinjie Lv Shu-Wei Huang Zhenda Xie Shi-Ning Zhu | 2022 | Photonics Research2022，10，2： | 1 |
| 10 | Relationship between Arterial Stiffness Assessed by Brachial-Ankle Pulse Wave Velocity and Coronary Artery Disease Severity Assessed by the SYNTAX Score显示文摘 | Zhaojun Xiong Cansheng Zhu Zhenda Zheng | 2012 | J Atheroscler Thromb2012，19，11： | 1 |
| 11 | Laser cladding of WC-Ni eomposite显示文摘 | LIM Leong Chew QIAN Ming | 1996 | J Materials Processing Technology1996，62，： | 1 |
| 12 | Design and simulation of a type of four degrees of freedom parallel robot 显示文摘 | Xu Zhenda You Dazhang | 2012 | Applied Mechanics and Mate- rials2012，，： | 1 |
| 13 | Design and Simulation of a Type of Four Degrees of Freedom Parallel Robot 显示文摘 | XU Zhenda YOU Dazhang | 2012 | Ap-plied Mechanics and Materials2012，，： | 1 |
| 14 | Sandy desertification in the north of China 显示文摘 | WANG Tao ZHU Zhenda WU Wei | 2002 | Science in China ( Series D )2002，，45： | 1 |
| 15 | LiNbO_(3)crystals:from bulk to film显示文摘Lithium niobate^(1,2) is a ferroelectric crystal that features superior electrooptical,nonlinear optical,and acoustic optical performance,and it is thus prominent in various optoelectronic applications.Recent breakthroughs in the fabrication of thin film lithium niobate(TFLN)combine the unique features of the bulk crystal onto an integrated platform with submicron light confinement,driving new records in reducing the energy consumption for high-speed electro-optical modulation,3–5 the footprint for acoustic wave filtering,6 and the power requirement for efficient optical frequency conversion.7–9 TFLN is mainly fabricated using the smart cut technique,10,11 which was developed for silicon-oninsulator materials12 and is known for its capability for manufacturing high-quality,large-sized crystalline wafer.Revolutionary performances are expected by moving from bulk to TFLN,e.g.,in the form of lithium-niobate-on-insulator(LNOI)optical communication and wireless communication devices,and this trend may also lead to fundamental breakthroughs in optical computation,microwave photonics,and quantum optics,as discussed below. | Zhenda Xie Shining Zhu | 2022 | Advanced Photonics2022，4，3： | 1 |
| 16 | Electromagnetic characteristics and microwave absorption properties of carbon-encapsulated cobalt nanoparticles in 2–18-GHz frequency range显示文摘 | Danfeng Zhang Fangxing Xu Jin Lin Zhenda Yang Min Zhang | 2014 | Carbon2014，，： | 1 |
| 17 | Sandy desertification in the north China显示文摘 | Wang Tao Zhu Zhenda Wu Wei | 2002 | Science in China:Series D2002，，： | 1 |
| 18 | Sandy desertification in the north of China显示文摘 | Tao Wang Zhenda Zhu Wei Wu | 2002 | Science in China Series D: Earth Sciences2002，，1： | 1 |
| 19 | Realization of a source-device-independent quantum random number generator secured by nonlocal dispersion cancellation显示文摘Quantum random number generators(QRNGs)can provide genuine randomness by exploiting the intrinsic probabilistic nature of quantum mechanics,which play important roles in many applications.However,the true randomness acquisition could be subjected to attacks from untrusted devices involved or their deviations from the theoretical modeling in real-life implementation.We propose and experimentally demonstrate a source-device-independent QRNG,which enables one to access true random bits with an untrusted source device.The random bits are generated by measuring the arrival time of either photon of the time–energy entangled photon pairs produced from spontaneous parametric downconversion,where the entanglement is testified through the observation of nonlocal dispersion cancellation.In experiment,we extract a generation rate of 4 Mbps by a modified entropic uncertainty relation,which can be improved to gigabits per second by using advanced single-photon detectors.Our approach provides a promising candidate for QRNGs with no characterization or error-prone source devices in practice. | Ji-Ning Zhang Ran Yang Xinhui Li Chang-Wei Sun Yi-Chen Liu Ying Wei Jia-Chen Duan Zhenda Xie Yan-Xiao Gong Shi-Ning Zhu | 2023 | Advanced Photonics2023，5，3： | 0 |
| 20 | Unveiling non-radiative center control in CsPbBr_(3) nanocrystals:A comprehensive comparative analysis of hot injection and ligandassisted reprecipitation approaches显示文摘Metal-halide perovskite nanocrystals(NCs)have gained significant attention in the field of optoelectronic and photonic devices due to their promising applications.Despite their exceptional optical properties,the impact of different synthetic strategies on the fundamental nature of NCs,such as nonradiative recombination centers,remains poorly understood.In this study,we investigated the photophysical properties of CsPbBr_(3) NCs synthesized using two distinct methods,hot injection and ligand-assisted reprecipitation,at the individual particle level.We observed different blinking behaviors under specific photoexcitation power densities and proposed,through intensity-lifetime analysis and Monte-Carlo simulations,that these different synthetic strategies can fabricate NCs with similar crystal structures but distinct surface quenchers with varying energy levels,which significantly affected the photo-induced blinking-down and blinking-up behaviors in individual NCs.Our findings indicate a practical and feasible approach for controlling defect engineering in perovskite NCs,with significant implications for their use in optoelectronic and other technological applications. | Daocheng Hong Yuchen Zhang Shuhan Pan Hanyu Liu Wei Mao Wanli Zhang Yuhui Ye Zhihong Wei Xuxing Lu Xiaoyong Wang Zhenda Lu Yuxi Tian | 2024 | Nano Research2024，17，5： | 0 |
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