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| 1 | Broadband ultrafast nonlinear optical response of few-layers graphene: toward the mid-infrared regime显示文摘Gapless linear energy dispersion of graphene endows it with unique nonlinear optical properties, including broadband nonlinear absorption and giant nonlinear refractive index. Herein, we experimentally observed that fewlayers graphene has obvious nonlinear absorption and large nonlinear refraction, as investigated by the Z-scan technique in the mid-infrared(mid-IR) regime. Our study may not only, for the first time to our knowledge, verify the giant nonlinear refractive index of graphene(~10-7cm2∕W) at the mid-IR, which is 7 orders of magnitude larger than other conventional bulk materials, but also provide some new insights for graphene-based mid-IR photonics,potentially leading to the emergence of several new conceptual mid-IR optoelectronics devices. | Lili Miao Yaqin Jiang Shunbin Lu Bingxin Shi Chujun Zhao Han Zhang Shuangchun Wen | 2015 | Photonics Research2015，3，5： | 7 |
| 2 | 纳米银线/还原石墨烯复合材料的制备与表征显示文摘用改进的Hummer法制备了氧化石墨烯(GD),并制备了表面用聚乙烯吡咯烷酮修饰的纳米银线(AgNWs),通过原位还原法将二者复合成一种新型的水溶性AgNWs/还原石墨烯(RGD)材料,克服了石墨烯材料不易分散的缺点。用X射线衍射(XRD)、紫外-可见分光(UV-vis)光度计、扫描电子显微镜(SEM)和傅里叶变换红外(FT-IR)光谱分析仪对样品结构和形貌进行了表征。结果表明,制备的AgNWs/RGD材料具有与前驱体不同的物理参数,有望在非线性光学、光电传感器和生物抑菌等方面有良好的表现。 | 朱治广 李若平 韩俊鹤 刘军辉 黄明举 | 2015 | 光电子.激光2015，26，4： | 6 |
| 3 | Sensitive monitoring of RNA transcription levels using a graphene oxide fluorescence switch显示文摘Catalytic transfer of genetic information from DNA to RNA is very important in life activities. The unconventional RNA transcription level may be related to the source of genetic diseases. At present, conventional methods for detection of RNA transcripts usually involve cumbersome preparative steps, or require sophisticated laboratory equipments. In this study, we presented a rapid, sensitive nano-detection platform for monitoring of RNA transcript levels. T7 RNA polymerase transcription reaction is employed as the example to test the feasibility of this method. In this design, in vitro synthesized RNA products can be hybridized to the FAM labeled single strand DNA (ssDNA) probes which can be adsorbed onto the graphene oxide (GO) surface. Using GO as the fluorescence switch, excellent capacity of the signal-on fluorescence platform for detection of RNA transcripts level is demonstrated. Transcription levels sensing with this nano-platform achieved a sensitivity of 5 pmol/L transcription template. It is antici- pated that current developed RNA transcript nano-detection mode has the potential to be an alternative to the conventional RNA transcript detection methods. | ZHOU XiaoMing LIAO YuHui XING Da | 2013 | Chinese Science Bulletin2013，58，21： | 3 |
| 4 | A fluid dynamics route for producing graphene and its analogues显示文摘A novel fluid dynamics route for scalable and efficient production of graphene and its analogues is demonstrated.Atomic force microscopy and transmission electron microscopy analyses strongly suggest that the bulk layered materials(graphite,BN,MoS2,and WS2)are efficiently exfoliated into individual layers containing mono-and few-layer nanosheets.Computational fluid dynamics analysis indicates that multiple fluid dynamics events are responsible for efficient exfoliation.Cavitation and pressure release can generate normal force for exfoliation.The velocity gradient-induced viscous shear stress,the turbulence-induced Reynolds shear stress,and shear effects stemmed from turbulence and flow channel-induced collisions can generate lateral force for exfoliation,resulting in theses bulk layered materials self-exfoliation down to single or few layers through their intrinsically lateral self-lubricating ability. | Min Yi Zhigang Shen Jinyang Zhu | 2014 | Chinese Science Bulletin2014，59，16： | 2 |
| 5 | 聚3-己基噻吩/氧化石墨烯复合材料的制备与光学性能研究显示文摘首先对氧化石墨烯(GO)进行酰氯化得到石墨烯酰氯(GO-Cl),再与3-噻吩甲酸反应形成石墨烯基噻吩(GOT),然后GOT与3-己基噻吩(3-HT)接枝共聚得到聚3-己基噻吩(P3HT)/GO复合材料(P3HT-g-GO)。通过红外光谱(FT-IR)、扫描电镜(SEM)及元素分析(EDX)对产物进行了表征。用热重分析(TGA)研究了复合材料的热稳定性。用紫外吸收(UV-vis)、荧光发射光谱(AFS)、Z-扫描技术(Z-scan)初步研究了P3HT-g-GO的非线性光学特性(NLO)。结果表明,含有5%(wt,质量分数)GO的P3HT-g-GO紫外吸收相对于P3HT发生了16nm的红移。随着GO含量的增加,复合材料容易产生荧光猝灭现象。在相同的线性透过率下,复合材料的非线性吸收系数(18cm/GW)高于纯的P3HT(10cm/GW)和GO(9.2cm/GW),说明P3HT-g-GO具有良好的NLO特性。 | 孙成龙 董延茂 李佳轩 朱广爱 戴旭 | 2016 | 化工新型材料2016，44，2： | 0 |
| 6 | Isothermal detection of RNA transcription levels using graphene oxide-based SYBR Green I fluorescence platform显示文摘An isothermal graphene oxide(GO)-based SYBR Green I fluorescence platform for sensitive detection of RNA transcription levels is proposed. Briefly, a synthesized T7 DNA template was transcribed by T7 RNA polymerase, to producemany copies of single-stranded(ss) RNA transcripts. The ssRNA transcripts were then hybridized with a label-free ssDNA probe which alone will be adsorbed on the GO surface. The resultant double-stranded(ds) RNA:DNA hybrids were incubated with GO and SYBR Green I. Then the hybrid binding with SYBR Green I emits enhanced fluorescence for detection. Experimental results show that the detection limit of the method is 0.5 pmol/L of T7 DNA template. A calibration curve with a linearity range of 0.5 pmol/L to 5 nmol/L is established, thus, making quantitative analysis feasible. The method may become a powerful tool for RNA transcription detection due to its sensitivity, rapidity and convenience. | Wen-Ge Ma Su-Qin Lu De-Bin Zhu Xiao-Bo Xing Bi-Hua Su | 2014 | Chinese Chemical Letters2014，25，3： | 0 |
| 7 | 电子辐照制备二维锑烯光限幅材料显示文摘块状材料锑粒通过液相剥离成功制备了锑烯纳米片。采用扫描电镜、紫外-可见吸收光谱和拉曼光谱对所制锑烯进行了表征,制备的锑烯纳米片展现出从紫外区到可见光区的宽谱吸收,并且展现出锑的拉曼特征峰,微观结构上展示出二维纳米片状的独特结构。利用Z-扫描技术对所制样品的三阶非线性光学性质测试发现,在脉冲宽度为4 ns、波长为532 nm的激光光源激发下,锑烯展示出饱和吸收的性质,其非线性吸收系数β为-7.86×10^-11m/W。通过对样品进行电子辐照,成功获取了具有光限幅性质的二维锑烯。辐照后的锑烯展示出反饱和吸收的性质,非线性吸收系数β为8.69×10-11m/W。 | 张磊 武昊然 董涛涛 张则琪 王强 张浩力 | 2019 | 红外与激光工程2019，48，11： | 0 |
| 8 | Physical properties and device applications of graphene oxide显示文摘Graphene oxide(GO),the functionalized graphene with oxygenated groups(mainly epoxy and hydroxyl),has attracted resurgent interests in the past decade owing to its large surface area,superior physical and chemical properties,and easy composition with other materials via surface functional groups.Usually,GO is used as an important raw material for mass production of graphene via reduction.However,under different conditions,the coverage,types,and arrangements of oxygen-containing groups in GO can be varied,which give rise to excellent and controllable physical properties,such as tunable electronic and mechanical properties depending closely on oxidation degree,suppressed thermal conductivity,optical transparency and fluorescence,and nonlinear optical properties.Based on these outstanding properties,many electronic,optical,optoelectronic,and thermoelectric devices with high performance can be achieved on the basis of GO.Here we present a comprehensive review on recent progress of GO,focusing on the atomic structures,fundamental physical properties,and related device applications,including transparent and flexible conductors,field-effect transistors,electrical and optical sensors,fluorescence quenchers,optical limiters and absorbers,surface enhanced Raman scattering detectors,solar cells,light-emitting diodes,and thermal rectifiers. | Xiao-Ming Huang Li-Zhao Liu Si Zhou Ji-Jun Zhao | 2020 | Frontiers of physics2020，15，3： | 0 |
| 9 | RGO-CdSe纳米复合材料的制备及其光学非线性吸收特性显示文摘通过两相法制备了氧化石墨烯-硒化镉(GO-CdSe)纳米复合材料,并进一步通过水合肼还原,制备了还原氧化石墨烯-硒化镉(RGO-CdSe)纳米复合材料。通过透射电镜(TEM)、X射线衍射仪(XRD)、紫外可见光吸收(UV-Vis)光谱和荧光(PL)光谱对复合材料的形貌、结构和光学特性进行了表征。CdSe量子点为闪锌矿结构,粒径在6nm左右,基本均匀的分布在RGO片上。在波长为532nm、脉冲宽度为30ps的激光作用下,采用单光束Z扫描技术,对复合材料的三阶光学非线性吸收性质进行了研究。研究发现,RGO-CdSe纳米复合材料展现出反饱和吸收的非线性光学特性;相对于未附着CdSe量子点的RGO,复合材料的光学非线性吸收特性有所增强。RGO-CdSe纳米复合材料的非线性吸收系数为18.3cm/GW,高于纯RGO的11.2cm/GW。实验结果表明,RGOCdSe纳米复合材料在光限幅器、光开关等光学器件方面有着潜在的应用前景。 | 尉乔南 韩俊鹤 刘军辉 李若平 黄明举 | 2016 | 光电子.激光2016，27，1： | 0 |
| 10 | 等离激元二次谐波的发展与应用显示文摘人们借助等离激元结构,可以在亚波长范围内获得、操控局域放大的光场。它与非线性光学结合,衍生出非线性等离激元。等离激元二次谐波因其卓越特性,近年在理论和应用方面均有较大突破。基于流体动力学模型介绍了等离激元结构二次谐波理论,总结了其发展与应用的报道,包括等离激元共振增强二次谐波效率、基于磁场洛伦兹力的二次谐波效应、对二次谐波辐射方向和频率的调控,以及等离激元二次谐波在结构检测、传感、成像等领域的应用。最后,对等离激元二次谐波研究领域可能的发展方向进行了展望。 | 郭凯 王超 郭忠义 | 2022 | 光学与光电技术2022，20，4： | 0 |
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