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| 1 | Graphene/phosphorene nano-heterojunction:facile synthesis, nonlinear optics, and ultrafast photonics applications with enhanced performance显示文摘Owing to its thickness-modulated direct energy band gap, relatively strong light–matter interaction, and unique nonlinear optical response at a long wavelength, few-layer black phosphorus, or phosphorene, becomes very attractive in ultrafast photonics applications. Herein, we synthesized a graphene/phosphorene nano-heterojunction using a liquid phase-stripping method. Tiny lattice distortions in graphene and phosphorene suggest the formation of a nano-heterojunction between graphene and phosphorene nanosheets. In addition, we systematically investigate their nonlinear optical responses at different wavelength regimes. Our experiments indicate that the combined advantages of ultrafast relaxation, broadband response in graphene, and the strong light–matter interaction in phosphorene can be combined together by nano-heterojunction. We have further fabricated two-dimensional(2D) nano-heterojunction based optical saturable absorbers and integrated them into an erbium-doped fiber laser to demonstrate the generation of a stable ultrashort pulse down to 148 fs. Our results indicate that a graphene/phosphorene nano-heterojunction can operate as a promising saturable absorber for ultrafast laser systems with ultrahigh pulse energy and ultranarrow pulse duration. We believe this work opens up a new approach to designing 2D heterointerfaces for applications in ultrafast photonics and other research.The fabrication of a 2D nano-heterojunction assembled from stacking different 2D materials, via this facile and scalable growth approach, paves the way for the formation and tuning of new 2D materials with desirable photonic properties and applications. | SHUNXIANG LIU ZHONGJUN LI YANQI GE HUIDE WANG RUI YUE XIANTAO JIANG JIANQING LI QIAO WEN HAN ZHANG | 2017 | Photonics Research2017，5，6： | 6 |
| 2 | Ultrafast nonlinear absorption and nonlinear refraction in few-layer oxidized black phosphorus显示文摘We experimentally investigated the nonlinear optical response in few-layer oxidized black phosphorus(OBP) by the femtosecond Z-scan measurement technique, and found that OBP not only possesses strong ultrafast saturable absorption but also a nonlinear self-defocusing effect that is absent in black phosphorus(BP). The saturable absorption property originates mainly from the direct band structure, which is still maintained in OBP. The emergence of self-defocusing might originate from the combined consequences of the oxygen-induced defects in BP. Our experimental findings might constitute the first experimental evidence on how to dynamically tune its nonlinear property, offering an inroad in tailoring its optical properties through chemical modification(oxidation, introducing defects, etc.). The versatile ultrafast nonlinear optical properties(saturable absorption and self-defocusing) imply a significant potential of the layered OBP in the development of unprecedented optoelectronic devices, such as mode lockers, optical switches, laser beam shapers, and wavelength converters. | Shunbin Lu Yanqi Ge Zhengbo Sun Zongyu Huang Rui Cao Chujun Zhao Shuangchun Wen Dianyuan Fan Jianqing Li Han Zhang | 2016 | Photonics Research2016，4，6： | 5 |
| 3 | Present advances and perspectives of broadband photo-detectors based on emerging 2D-Xenes beyond graphene显示文摘As an excellent optical device,photodetectors have many important applications,such as communication technology,display technology,scientific measurement,fire monitoring,aerospace and biomedical research,and ifs of great significance in the research of nanotechnology and optoelectronics.Graphene,as the first two-dimensional(2D)single-element nanomaterial,has the advantages of high carrier mobility,high strength,high light transmittance and excellent thermal conductivity,and ifs widely used in various nano-optical devices.The great success of graphene has led scientists to extensive research on other 2D single-element nanomaterials.Recently,a group of novel 2D single-element nanomaterials have attracted a lot of attention from scientists because of its excellent physical,chemical,electronic,mechanical and optical properties.Furthermore,it has opened a new door for the realization of new and efficient photodetectors.The group of 2D single-element nanomaterials are called 2D-Xenes and used to make high-performance photodetectors.Currently,there are few studies on photodetectors based on 2D-Xenes,but some 2D-Xenes have been applied to photodetectors and reported.Some of these have excellent photodetection performance,such as high photoresponsivity(R),broad spectral response range,fast photoresponse speed and high specific detectivity(D).Based on the novel 2D-Xenes,this review explores the types and preparation methods of 2D-Xenes,and the working mechanisms of 2D-Xenes photodetectors.Finally,the challenges and development trends of 2D-Xenes in the future are discussed.The research of 2D-Xenes is of great significance for the development of high-performance photodetectors in the future,and is expected to be widely used in other nanoelectronics and optical devices. | Bing Wang Shipeng Zhong Yanqi Ge Huide Wang Xiaoling Luo Han Zhang | 2020 | Nano Research2020，13，4： | 4 |
| 4 | 拓普替康联合全脑照射肺癌脑转移的Ⅰ期临床试验(英文)显示文摘Objective:The aim of this study was to define the maximum-tolerated dose (MTD) and observe the toxicity of escalating topotecan combined whole brain radiotherapy for brain metastasis in lung cancer. Methods:Patients with brain metastasis of lung cancer received conventional fractionation radiotherapy, with 5 daily fractions of 2 Gy per week, the total radiation dose was 40 Gy, while the larger lesions were boosted to 50-60 Gy. The initial dose of topotecan was 1.0 mg/m 2 . Escalation dose was 0.25 mg/m 2.Every cohort contained at least 3 patients.If no dose-limiting toxicity (DLT) was observed,the next dose level was opened for entry. These courses were repeated until DLT appeared. MTD was declared as one dose level below which DLT appeared. Results:Eighteen patients were recruited. Two cases of grade 3 leucopenia/neutropenia was observed as DLT at the level of topotecan 2.0 mg/m 2 . MTD of topotecan was defined as 1.75 mg/m 2 .The major side effects were leucopenia/neutropenia, nausea and vomiting. Conclusion:Topotecan combined with whole brain radiotherapy for brain metastasis in lung cancer is well tolerated. Maximum-tolerated dose of topotecan is 1.75 mg/m 2 , once a week of a total of four. | Xiaohui Ge Wenyan Zhao Xiaocang Ren Yongqiang Wang Zhigang Li Yanqi Li Yuee Liu Qiang Lin | 2012 | The Chinese-German Journal of Clinical Oncology2012，11，8： | 1 |
| 5 | The design and implementation of GECAM satellite payload performancemonitoring software显示文摘Background The Gravitational wave high-energy Electromagnetic Counterpart All-sky Monitor(GECAM)is primarily designed to spot gamma-ray bursts corresponding to gravitational waves.In order to achieve stable observations from various astronomical phenomena,the payload performance need to be monitored during the in-orbit operation.Method This article describes the design and implementation of GECAM satellite payload performance monitoring(GPPM)software.The software extracts the payload status and telescope observations(light curves,energy spectrums,characteristic peak fitting of energy spectrums,etc)from the payload data.Considering the large amount of payload status parameters in the engineering data,we have designed a method of parameter processing based on the configuration tables.This method can deal with the frequent changes of the data formats and facilitate program maintenance.Payload status and performance are monitored through defined thresholds and monitoring reports.The entire software is implemented in python language and the huge amount of observation data is stored in MongoDB.Conclusion The design and implementation of GPPM software have been completed,tested with ground and in-orbit payload data.The software can monitor the performance of GECAM payload effectively.The overall design of the software and the data processing method can be applied to other satellites. | Peng Zhang Xiang Ma Yue Huang Shaolin Xiong Shijie Zheng Liming Song Ge Ou Yanqi Du Jing Liang Hong Wu | 2022 | Radiation Detection Technology and Methods2022，6，1： | 0 |
| 6 | Broadband nonlinear optical response of graphdiyne for mid-infrared solid-state lasers显示文摘Graphdiyne(GDY),a novel all-carbon nanomaterial,is considered the most easily synthesized and stable carbon allotrope,positioning it as a promising photoelectric material.Herein,we successfully fabricated a high-quality GDY saturable absorber and saturable absorber mirror.Both broadband nonlinear saturable absorption and ultrafast relaxation dynamic properties in midinfrared region of the GDY were investigated.All solid-state diode-pumped short and ultrashort pulsed lasers were realized using the GDY absorber at wavelengths of 2 and 2.8μm,respectively.The results were then theoretically analyzed.This is the first presentation of ultrashort pulsed lasers in the mid-infrared region with GDY absorbers.These results resolutely confirm that GDY could be an optional broadband SA for all solid-state mid-infrared pulsed lasers,and they evidence its promising applications in mode-locked ultrafast lasers. | MengYu Zong YuQian Zu Jia Guo Zhen Zhang JingJing Liu YanQi Ge Jie Liu LiangBi Su | 2021 | Science China(Physics,Mechanics & Astronomy)2021，64，9： | 0 |
| 7 | Tourism Image Perception Research of Mount Tai Scenic Area: Text Analysis Based on Ctrip Tourist Comments显示文摘Tourism destination image research has always been a hot issue in tourism research, which is related to the development and sustainability of destination tourism. Mount Tai Scenic Area, a world double-heritage site is taken as the research object. By collecting comments about Mount Tai Scenic Area on Ctrip, and using content analysis, cognitive image, emotional image and overall image of Mount Tai Scenic Area are analyzed with the help of “cognitive-emotional” model. The results show that visitors' perception of the cognitive image of Mount Tai Scenic Area is multi-dimensional;tourists' perception of the emotional image of Mount Tai Scenic Area is positive;the tourists' perception of the overall image of Mount Tai Scenic Area shows a four-layer “core-edge” structure of “core-sub core-sub edge-edge”. On this basis, the paper puts forward some suggestions for improving the tourism development of Mount Tai Scenic Area. | GE Xinyu ZHANG Jian LIU Yanqi | 2022 | Journal of Landscape Research2022，14，6： | 0 |
| 8 | Boron quantum dots all-optical modulator based on efficient photothermal effect显示文摘All-optical devices without external electronic components have drawn extraordinary attentions in all-optical communication.In this work,boron quantum dots(BQDs)were synthesized by a facile liquid-phase exfoliation method.The as-prepared BQDs showed good structural homogeneity and crystallinity,broadband optical absorption as well as excellent photothermal properties.Femtosecond-resolved transient absorption further revealed the short carrier relaxation time of BQDs.Inspired by the outstanding photothermal properties and ultrafast carrier dynamic of BQDs,we fabricated BQDsbased all-optical modulator.The phase shift with a slope efficiency of 0.032π/m W and response time of 0.97 ms can be achieved.The modulator was used in laser resonance cavity to achieve all-optical actively Q-switched laser operation with control repetition rate.This prototypical BQDs-based all-optical modulator shows a great potential to be applied in all-optical information processing and communication. | Cong Wang Qianyuan Chen Hualong Chen Jun Liu Yufeng Song Jie Liu Delong Li Yanqi Ge Youning Gong Yupeng Zhang Han Zhang | 2021 | Opto-Electronic Advances2021，4，7： | 0 |
| 9 | Light-induced tumor theranostics based on chemical-exfoliated borophene显示文摘Among 2D materials(Xenes)which are at the forefront of research activities,borophene,is an exciting new entry due to its uniquely varied optical,electronic,and chemical properties in many polymorphic forms with widely varying band gaps including the lightest 2D metallic phase.In this paper,we used a simple selective chemical etching to prepare borophene with a strong near IR light-induced photothermal effect.The photothermal efficiency is similar to plasmonic Au nanoparticles,with the added benefit of borophene being degradable due to electron deficiency of boron.We introduce this selective chemical etching process to obtain ultrathin and large borophene nanosheets(thickness of ~4 nm and lateral size up to ~600 nm)from the precursor of AlB_(2).We also report first-time observation of a selective Acid etching behavior showing HCl etching of Al to form a residual B lattice,while HF selectively etches B to yield an Al lattice.We demonstrate that through surface modification with polydopamine(PDA),a biocompatible smart delivery nanoplatform of B@PDA can respond to a tumor environment,exhibiting an enhanced cellular uptake efficiency.We demonstrate that borophene can be more suitable for safe photothermal theranostic of thick tumor using deep penetrating near IR light compared to gold nanoparticles which are not degradable,thus posing longterm toxicity concerns.With about 40 kinds of borides,we hope that our work will open door to more discoveries of this top-down selective etching approach for generating borophene structures with rich unexplored thermal,electronic,and optical properties for many other technological applications. | Zhongjian Xie Yanhong Duo Taojian Fan Yao Zhu Shuai Feng Chuanbo Li Honglian Guo Yanqi Ge Shakeel Ahmed Weichun Huang Huiling Liu Ling Qi Rui Guo Defa Li Paras N.Prasad Han Zhang | 2022 | Light(Science & Applications)2022，11，12： | 0 |
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