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Enhanced Spectroscopies and Nanoimaging 2021最新文献

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Tip-induced nano-engineering of strain, bandgap, and exciton dynamics in low-dimensional semiconductors 低维半导体中应变、带隙和激子动力学的尖端诱导纳米工程
Enhanced Spectroscopies and Nanoimaging 2021 Pub Date : 2021-08-01 DOI: 10.1117/12.2594389
Kyoung-Duck Park
{"title":"Tip-induced nano-engineering of strain, bandgap, and exciton dynamics in low-dimensional semiconductors","authors":"Kyoung-Duck Park","doi":"10.1117/12.2594389","DOIUrl":"https://doi.org/10.1117/12.2594389","url":null,"abstract":"We demonstrate a dynamic nano-mechanical strain-engineering of naturally-formed wrinkles in a WSe2 monolayer, with real-time investigation of nano-spectroscopic properties using hyperspectral adaptive tip-enhanced PL (a-TEPL) spectroscopy. First, we characterize nanoscale wrinkles through hyperspectral a-TEPL nano-imaging with <15 nm spatial resolution which reveals the modified nano-excitonic properties by the induced tensile strain at the wrinkle apex, e.g., an increase in the quantum yield due to the exciton funneling, decrease in PL energy up to ~10 meV, and a symmetry change in the TEPL spectra caused by the reconfigured electronic bandstructure. We then dynamically engineer the local strain by pressing and releasing the wrinkle apex through an atomic force tip control. This nano-mechanical strain-engineering allows us to tune the exciton dynamics and emission properties at the nanoscale in a reversible fashion.","PeriodicalId":243760,"journal":{"name":"Enhanced Spectroscopies and Nanoimaging 2021","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133744318","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
Phonon-enhanced infrared near-field spectroscopy enables probing of the buried 2DEG at the LAO/STO interface 声子增强红外近场光谱可以探测到LAO/STO界面处埋藏的2DEG
Enhanced Spectroscopies and Nanoimaging 2021 Pub Date : 2021-08-01 DOI: 10.1117/12.2594200
J. Barnett, T. Taubner
{"title":"Phonon-enhanced infrared near-field spectroscopy enables probing of the buried 2DEG at the LAO/STO interface","authors":"J. Barnett, T. Taubner","doi":"10.1117/12.2594200","DOIUrl":"https://doi.org/10.1117/12.2594200","url":null,"abstract":"","PeriodicalId":243760,"journal":{"name":"Enhanced Spectroscopies and Nanoimaging 2021","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125999922","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
Broadband plasmon nanofocusing: from fundamental studies to advanced applications 宽带等离子体纳米聚焦:从基础研究到高级应用
Enhanced Spectroscopies and Nanoimaging 2021 Pub Date : 2021-08-01 DOI: 10.1117/12.2596833
T. Umakoshi, Koki Taguchi, P. Verma
{"title":"Broadband plasmon nanofocusing: from fundamental studies to advanced applications","authors":"T. Umakoshi, Koki Taguchi, P. Verma","doi":"10.1117/12.2596833","DOIUrl":"https://doi.org/10.1117/12.2596833","url":null,"abstract":"Plasmon nanofocusing is a phenomenon that creates a localized strong light field at the apex of a tapered metallic structure by propagating plasmons on the metallic taper toward the apex with compressing light energy. One of interesting properties of plasmon nanofocusing is that it can be excited over a broad wavelength range. In this talk, focusing on broadband property of plasmon nanofocusing, we introduce our recent works from fundamental studies to advanced applications. We also discuss potentials of the broadband nanolight source created by plasmon nanofocusing for future applications.","PeriodicalId":243760,"journal":{"name":"Enhanced Spectroscopies and Nanoimaging 2021","volume":"454 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125789579","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
Multimodal Chemical Nano-imaging and Spectroscopy through Peak Force Infrared Microscopy 多模态化学纳米成像和光谱通过峰力红外显微镜
Enhanced Spectroscopies and Nanoimaging 2021 Pub Date : 2021-08-01 DOI: 10.1117/12.2593779
Xiaoji G. Xu
{"title":"Multimodal Chemical Nano-imaging and Spectroscopy through Peak Force Infrared Microscopy","authors":"Xiaoji G. Xu","doi":"10.1117/12.2593779","DOIUrl":"https://doi.org/10.1117/12.2593779","url":null,"abstract":"","PeriodicalId":243760,"journal":{"name":"Enhanced Spectroscopies and Nanoimaging 2021","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123197354","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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