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Electronic and optical properties of Dirac semimetals in InAs/GaInSb superlattice nanostructures InAs/GaInSb超晶格纳米结构中Dirac半金属的电子和光学性质
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541284
M. Patrashin, N. Sekine, K. Akahane, A. Kasamatsu, I. Hosako
{"title":"Electronic and optical properties of Dirac semimetals in InAs/GaInSb superlattice nanostructures","authors":"M. Patrashin, N. Sekine, K. Akahane, A. Kasamatsu, I. Hosako","doi":"10.1117/12.2541284","DOIUrl":"https://doi.org/10.1117/12.2541284","url":null,"abstract":"In this work we discuss technological aspects of creating a linear energy dispersion spectrum of charge carriers in semiconductor materials and report on the experimental realization of the topological Dirac semimetals (DSM) in nanostructurally engineered zero-gap InAs/GaInSb superlattices (SL) [1]. The SL samples are synthesized by molecular beam epitaxy, which provides monolayer accuracy for growing high-quality single-crystals on large area substrates. The prospects for designing the topological insulator (TI) SLs with the same approach and first results of experimental characterization of the TI candidates are also presented.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"36 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":"127009023","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
Dielectric metasurface based advanced image processing 基于介电超表面的高级图像处理
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2539025
A. Komar, R. A. Aoni, Lei Xu, M. Rahmani, A. Miroshnichenko, D. Neshev
{"title":"Dielectric metasurface based advanced image processing","authors":"A. Komar, R. A. Aoni, Lei Xu, M. Rahmani, A. Miroshnichenko, D. Neshev","doi":"10.1117/12.2539025","DOIUrl":"https://doi.org/10.1117/12.2539025","url":null,"abstract":"We numerically and experimentally demonstrate an optical image processing technique in the form of edge detection of an object by exploring the angular selectivity of dielectric metasurfaces. By taking the advantages of resonant dielectric metasurfaces with spatial dispersion property, we efficiently filter-out the lower k-vector components of an image and only allow the higher k-vectors resulting in displaying the silhouettes of an object. We have considered dielectric amorphous silicon (a-Si) nanodisk with hexagonal structure interface which provides nearly zero transmission for lower k-vectors and near-unity transmission for higher k-vectors at the operating wavelength of 1550 nm. The proposed metasurface has been fabricated using electron beam lithography followed by a lift-off process. Our results suggest a new way to realize the effective edge detection with dielectric metasurfaces and open new opportunities for ultracompact optical image processing devices, having various applications in microscopy.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":" 79","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113948680","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
Evolution of femtosecond laser-induced periodic structures: from nanoholes to regular structures 飞秒激光诱导周期结构的演化:从纳米孔到规则结构
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541301
Zhen-ze Li, Lei Wang, Hua Fan, Yanhao Yu, Qidai Chen, S. Juodkazis, Hongbo Sun
{"title":"Evolution of femtosecond laser-induced periodic structures: from nanoholes to regular structures","authors":"Zhen-ze Li, Lei Wang, Hua Fan, Yanhao Yu, Qidai Chen, S. Juodkazis, Hongbo Sun","doi":"10.1117/12.2541301","DOIUrl":"https://doi.org/10.1117/12.2541301","url":null,"abstract":"Femtosecond laser-induced periodic surface structures have opened broad prospects in the aspect of high-efficient and low-cost nanotextured patterning, yet defined great challenges on how to keep the periodicity in a macro area. Herein, we report a transition from non-periodicity to periodicity as the scan strategies changing. By suppressing the transition from the initial structures to the nanogratings with long-range order, arbitrary high-resolution direct writing patterns have been obtained in a large area. We attribute this phenomenon to the dynamic evolution of the near-field energy deposition around the pre-existing structures. This approach paves another way to high-precision laser processing.","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":"128561725","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: 1
Engineering and application of quantum emitters in hexagonal boron nitride 六方氮化硼量子发射体的工程与应用
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541218
M. Kianinia
{"title":"Engineering and application of quantum emitters in hexagonal boron nitride","authors":"M. Kianinia","doi":"10.1117/12.2541218","DOIUrl":"https://doi.org/10.1117/12.2541218","url":null,"abstract":"Layered van der Waals materials are emerging as compelling two-dimensional platforms for nanophotonics, polaritonics, valleytronics and spintronics, and have the potential to transform applications in sensing, imaging and quantum information processing. Amongst these, hexagonal boron nitride (hBN) is known to host ultra-bright, room temperature quantum emitters, whose nature is yet to be fully understood. Here we present a summary of the recent advances in our group on controlling and engineering the quantum emission energies in hBN as well as demonstration of using these emitters for various quantum applications. First, we show a CVD technique to grow hBN hosting high density of emitters with emission energies distributed over 20nm range. This is a milestone on continuing the hBN progress in quantum optics as uncontrollable emission wavelength hinders the potential development of hBN-based devices and applications. In addition, we report our recent understanding of photophysical properties and level structure of hBN emitters. In this regard we show a new modality for super resolution imaging based on quantum emitters in hBN which is expandable to other systems. Our findings expand current understanding of quantum emitters in hBN and demonstrate the potential of hBN for the development of hybrid quantum nanophotonic and optoelectronic devices based on two-dimensional materials.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"60 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":"126466165","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
Silicon-based metasurfaces for vortex beam generation 用于涡束产生的硅基超表面
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541234
Raghu Dharmavarapu, S. Ng, S. Bhattacharya, S. Juodkazis
{"title":"Silicon-based metasurfaces for vortex beam generation","authors":"Raghu Dharmavarapu, S. Ng, S. Bhattacharya, S. Juodkazis","doi":"10.1117/12.2541234","DOIUrl":"https://doi.org/10.1117/12.2541234","url":null,"abstract":"Silicon metasurfaces were fabricated on fused silica substrates by using sputtering, electron beam lithography and reactive ion etching. A chromium etch mask was used to protect the silicon during plasma etching. We designed a hologram with phase range of 0 - 1.17π to generate a higher order Bessel beam. The device produced the expected beam profile and the presence of charge 3 was confirmed using a interference test. Tests on spiral plate devices were less successful owing to the thickness non-uniformity in the sputtered Si film.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"59 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":"133783993","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
Ultraviolet light emitting diode lamp for color perception research 紫外发光二极管灯的色彩感知研究
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541251
Charitha Weerasuriya, W. Woods, S. Ng, T. Johnstone, S. Juodkazis
{"title":"Ultraviolet light emitting diode lamp for color perception research","authors":"Charitha Weerasuriya, W. Woods, S. Ng, T. Johnstone, S. Juodkazis","doi":"10.1117/12.2541251","DOIUrl":"https://doi.org/10.1117/12.2541251","url":null,"abstract":"Color influences human decision making process, affects mood. It is important to investigate human color judgment of objects under different illumination. By controlling of a red (R), green (G), Blue (B) and Amber (A) colored lamp a MagnetoEncephaloGraphy (MEG) brain scanner was tested for its performance. We developed a software to generate all the colors in the visual spectrum, predefined white light combinations and saturation of an illuminated objects by using RGBA colors. The lamp was controlled from outside of the shielded MEG room while the LED lamp was located inside of electromagnetically shielded room. The USB was used as for LED-lamp control. To check the feasibility of using LED lamp with MEG brain scanner and showed feasibility to use the LED-lamp, color control software and MEG scanner together for human and color related research.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"45 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":"115053966","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
Towards an active micropump-mixer for rapid anti-platelet drug screening in whole blood 用于全血抗血小板药物快速筛选的活性微泵混合器的研制
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541102
C. Szydzik, R. Brazilek, F. Akbaridoust, C. D. de Silva, Mitchell J. Moon, I. Marusic, H. Nandurkar, J. Hamilton, A. Mitchell, W. Nesbitt
{"title":"Towards an active micropump-mixer for rapid anti-platelet drug screening in whole blood","authors":"C. Szydzik, R. Brazilek, F. Akbaridoust, C. D. de Silva, Mitchell J. Moon, I. Marusic, H. Nandurkar, J. Hamilton, A. Mitchell, W. Nesbitt","doi":"10.1117/12.2541102","DOIUrl":"https://doi.org/10.1117/12.2541102","url":null,"abstract":"This work reports on development and characterization of an on-chip microfluidic handling system for application in preclinical anti-platelet drug screening. A reciprocating elastomeric micropump/mixer design is presented for use with whole human blood, utilizing flexible structural and actuation properties to manage hemodynamics for an on-chip platelet thrombosis assay on fibrillar collagen. The hemocompatibility of the design is assessed across a range of operational configurations, demonstrating equivalent or superior performance to common microcapillary systems at a range of physiologically relevant shear conditions. Surprisingly efficient mixing phenomena are briefly investigated, validated using dyes within the molecular weight range of common antiplatelet therapies. Finally, a proof-of-concept preclinical application is explored, demonstrating that this prototype can act as a real-time assay of anti-platelet drug pharmacokinetics, compared to an equivalent microcapillary system.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"32 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":"115635944","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: 1
Formation of micro-groove on diamond by femtosecond laser micromachining 飞秒激光微加工金刚石微沟槽的形成
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2542281
Ryoji Maruyama, T. Tamaki, W. Watanabe
{"title":"Formation of micro-groove on diamond by femtosecond laser micromachining","authors":"Ryoji Maruyama, T. Tamaki, W. Watanabe","doi":"10.1117/12.2542281","DOIUrl":"https://doi.org/10.1117/12.2542281","url":null,"abstract":"Laser processing of diamond have attracted attention. Ultrashort laser pulses can be used for micro-structuring on diamond and in bulk diamond. In this paper, we report on laser parameters for surface structuring of diamond by using femtosecond laser pluses at a repetition rate of 1 kHz. By changing scanning speed and energy, different types of grooves were inscribed. The morphology and depth of grooves were investigated.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"47 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":"125135598","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
Large-area mask patterning for solar cell applications 太阳能电池应用的大面积掩模图案
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541103
Jingwen Hu, J. Maksimovic, S. Ng, Stefan Lundgaard, Y. Nishijima, S. Juodkazis
{"title":"Large-area mask patterning for solar cell applications","authors":"Jingwen Hu, J. Maksimovic, S. Ng, Stefan Lundgaard, Y. Nishijima, S. Juodkazis","doi":"10.1117/12.2541103","DOIUrl":"https://doi.org/10.1117/12.2541103","url":null,"abstract":"Light harvesting using photonic crystal (PhC) surface patterns provides an opportunity to surpass the ray-optics defined light trapping and to approach thermodynamic ShockleyQueisser limit of solar cell efficiency, which for a single junction Si solar cell is ~ 32%. For an industry amenable nano-patterning of Si solar cells, we used laser direct write and stepper lithography based approaches for defining a large area (1 cm2) light trapping PhC patterns on silicon. Nanoholes of ~ 500 nm in diameter were fabricated by direct laser writing in a thin layer of chromium to act as a mask for subsequent reactive plasma etching to fabricate the nanostructures forming a PhC surface over a square centimeter. Surface area fabrication throughput was improved by more than order of magnitude as compared with electron beam lithography required to achieve sub-1 μm resolution.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"49 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":"128321850","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: 1
Femtosecond laser writing of metallic nanostructures using silver photo-reduction 利用银光还原技术进行金属纳米结构的飞秒激光书写
Micro + Nano Materials, Devices, and Applications Pub Date : 2019-12-31 DOI: 10.1117/12.2541654
A. Ono, S. Toriyama, V. Mizeikis
{"title":"Femtosecond laser writing of metallic nanostructures using silver photo-reduction","authors":"A. Ono, S. Toriyama, V. Mizeikis","doi":"10.1117/12.2541654","DOIUrl":"https://doi.org/10.1117/12.2541654","url":null,"abstract":"We report on fabrication of silver nanostructures using femtosecond laser lithography in silver-containing polymers. Various metallic structures were fabricated using tightly focused femtosecond laser beam having circular and linear polarization. Fine gratings consisting of ripple patterns were fabricated using linear polarization, and nanorings having size below the diffraction limit were fabricated using circular polarization. This approach offers a promising route for realization of plasmonic nanostructures on flexible substrates.","PeriodicalId":131350,"journal":{"name":"Micro + Nano Materials, Devices, and Applications","volume":"31 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":"125443548","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
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