Micro + Nano Materials, Devices, and Applications最新文献_第9页

Second harmonic generation from multilayer hexagonal boron nitride 多层六方氮化硼的二次谐波产生

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2537222

Sejeong Kim, J. Fröch, Augustine Gardner, Chi Li, I. Aharonovich, A. Solntsev

引用次数: 0

Light soak study of perovskite-based materials via scanning imaging spectroscopy 扫描成像光谱法研究钙钛矿基材料的光浸

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2539988

Weijian Chen, Y. Vu, Chunhua Zhou, B. Jia, X. Wen

{"title":"Light soak study of perovskite-based materials via scanning imaging spectroscopy","authors":"Weijian Chen, Y. Vu, Chunhua Zhou, B. Jia, X. Wen","doi":"10.1117/12.2539988","DOIUrl":"https://doi.org/10.1117/12.2539988","url":null,"abstract":"Organic-inorganic halide perovskite has emerged as promising candidate materials for next-generation energy harvesting and light-emitting applications with the advantages of low processing cost, high defects tolerance, and excellent power conversion efficiency. The instability of these perovskite-based materials under illumination, however, remains a major technical barrier for commercialization. Various techniques have been applied to improve the photo-stability of perovskites. Since the dynamic of photo-generated charged carriers and photo-activated mobile ions affect the stable performance of these applications, a comprehensive understanding of how illumination affect perovskites are of vital importance to improve the performance of perovskite-based optoelectronic applications. In this report, the recent progress of the light soak study on three kinds of perovskites is presented, using depth-resolved, temporal-resolved, and detection-wavelength selective spectroscopic imaging techniques. These works clarify different dominate roles in different perovskite structures and demonstrate the advantages of the imaging spectroscopy in studying the carrier dynamics of perovskite-based materials under light soaking, which is of crucial importance for their applications.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128027947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Measuring absorption coefficient of excised animal skin exposed to THz radiation 测量动物切除皮肤暴露于太赫兹辐射下的吸收系数

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2539879

A. Lajevardipour, Zoltan Vilagosh, A. Wood

引用次数: 0

Technology for chip based optical gyroscope 基于芯片的光学陀螺仪技术

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541220

M. H. Iqbal, C. Lai, S. Madden

引用次数: 0

Curcumin-nanodiamond-silk wound dressings for sensing infection 姜黄素纳米金刚石丝伤口敷料用于感应感染

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2539576

A. Abraham, A. Khalid, Huu Khuong Duy Nguyen, Denver P. Linklater, E. Ivanova, S. Spencer, B. Gibson

{"title":"Curcumin-nanodiamond-silk wound dressings for sensing infection","authors":"A. Abraham, A. Khalid, Huu Khuong Duy Nguyen, Denver P. Linklater, E. Ivanova, S. Spencer, B. Gibson","doi":"10.1117/12.2539576","DOIUrl":"https://doi.org/10.1117/12.2539576","url":null,"abstract":"The presence of an infection in a wound site is typically diagnosed based on the external appearance, such as redness, swelling, odour, and/or loss of function. However, this can lead to inaccurate and untimely diagnoses, since an infection might be present without obvious symptoms. This would commonly require removal of any dressing that might be present, which can cause further pain to the patient. Therefore, there is a need for more precise methods of detecting infections, with minimal effects to the patient. Comparison of temperature differences between infected tissue and healthy tissue shows an increase ranging from 3-4 °C, while normal skin has a temperature gradient of ±1 °C. Hence, monitoring temperature of wounds can be used to detect the presence of an infection. Nanodiamonds (NDs) containing negatively charged nitrogen-vacancy (NV-) centres are capable of monitoring changes in temperature with minimal influence by environmental factors such as pH, ion concentration or molecular interaction. This study looks at encapsulating these NDs into silk fibres for use as a wound dressing that can monitor temperature changes in the wound, without requiring the removal of the dressing. To further enhance the wound healing and anti-bacterial properties, curcumin was also incorporated into the silk fibres. Curcumin is one of the active ingredients in turmeric and is known to significantly enhance wound healing through its anti-inflammatory and antibacterial properties. This study used this curcumin-nanodiamond-silk hybrid wound dressing to investigate the healing capabilities and temperature sensing properties for use as a wound dressing.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123533828","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Femtosecond laser 3D nanoprinting for functional devices 飞秒激光3D纳米打印功能器件

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541304

Hongbo Sun, B. Han

引用次数: 0

Infrared imaging in nonlinear GaAs metasurfaces 非线性砷化镓超表面的红外成像

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541224

M. C. Camacho Morales, D. Rocco, Lei Xu, M. Rahmani, V. Gili, A. Komar, N. Dimitrov, L. Stoyanov, M. Lysevych, F. Karouta, A. Dreischuh, H. Tan, G. Leo, C. de Angelis, C. Jagadish, A. Miroshnichenko, D. Neshev

{"title":"Infrared imaging in nonlinear GaAs metasurfaces","authors":"M. C. Camacho Morales, D. Rocco, Lei Xu, M. Rahmani, V. Gili, A. Komar, N. Dimitrov, L. Stoyanov, M. Lysevych, F. Karouta, A. Dreischuh, H. Tan, G. Leo, C. de Angelis, C. Jagadish, A. Miroshnichenko, D. Neshev","doi":"10.1117/12.2541224","DOIUrl":"https://doi.org/10.1117/12.2541224","url":null,"abstract":"Dielectric metasurfaces have recently shown to be an excellent candidate for efficient frequency mixing at the nanoscale due to the excitation of Mie resonances. Among various dielectric materials, GaAs-based nanostructures have been reported to have high-efficiency of second-order nonlinear processes due to their high quadratic nonlinear susceptibility. Efficient frequency up-conversion can thereby be realised in GaAs-based metasurfaces through the process of sum-frequency generation (SFG), thereby opening new opportunities for nonlinear imaging and infrared vision not possible before. Here we demonstrate for the first time, infrared imaging based on nonlinear mixing of an infrared image with a pump beam in a GaAs resonant metasurface. The nonlinear mixing process generates visible images (Fig. 1a), which can be time resolved with femtosecond resolution and can be observed on a conventional CMOS sensor. Our results open new opportunities for the development of compact night-vision devices operating at room temperature and have multiple applications in defense and life sciences.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116704218","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Direct femtosecond laser writing of low-loss waveguides in chalcogenide glasses for mid-infrared applications 中红外应用中硫系玻璃低损耗波导的直接飞秒激光写入

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541175

D. Le Coq, J. Carcreff, P. Masselin

{"title":"Direct femtosecond laser writing of low-loss waveguides in chalcogenide glasses for mid-infrared applications","authors":"D. Le Coq, J. Carcreff, P. Masselin","doi":"10.1117/12.2541175","DOIUrl":"https://doi.org/10.1117/12.2541175","url":null,"abstract":"Direct femtosecond laser writing technique is now widely used in particular in glass, to produce both passive and active photonic devices. This technique offers a real scientific opportunity to generate three-dimensional optical components. The chalcogenide glasses are of great interest since they possess a transparency window from the visible up to the midinfrared range. Moreover, they also have high optical non-linearity and high photosensitivity that facilitate the inscription of permanent refractive index modification. In this presentation, an original method based on both the filamentation phenomenon and a point-by-point technique will be described. The written waveguide is of multicore type and consists in parallel channels of positive ▵n placed parallel to each other on a hexagonal or a circular mesh. The performances in terms of optical losses at both 1.55 μm and 4.55 μm measured in such photowritten buried infrared waveguide are very competitive. This writing technique is particularly suitable for the design of single mode waveguide for wavelengths ranging from the visible up to the mid-infrared since the geometry of the inscription and the amplitude of the refractive index modification can be easily adapted. This also paves the way for the fabrication of advanced mid-infrared optical components such as Y-splitters.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"11 3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116585381","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The double-edged sword of femtosecond laser-induced periodic surface structures for sub-diffraction and high-efficient nanotexturing 飞秒激光诱导亚衍射和高效纳米织构的周期性表面结构的双刃剑

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541062

Lei Wang, Zhen-ze Li, Hua Fan, Yanhao Yu, Qidai Chen, S. Juodkazis, Hongbo Sun

引用次数: 0

Towards a deep submicron CMOS image sensor on a standard FDSOI process 在标准FDSOI工艺上实现深亚微米CMOS图像传感器

Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541223

P. Beckett, R. Unnithan

引用次数: 0