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Optics & Photonics - NanoScience + Engineering最新文献

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Optical nanoscopy of a living cell 活细胞的光学纳米显微镜
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-11-19 DOI: 10.1117/12.2062581
B. Ahluwalia, D. Wolfson, Frank Y. S. Chuang, T. Huser
{"title":"Optical nanoscopy of a living cell","authors":"B. Ahluwalia, D. Wolfson, Frank Y. S. Chuang, T. Huser","doi":"10.1117/12.2062581","DOIUrl":"https://doi.org/10.1117/12.2062581","url":null,"abstract":"Optical nanoscopy allows to study biological and functional processes of sub-cellular organelles. In structured illumination microscopy (SIM) the sample is illuminated with a grid-like interference pattern to encode higher spatial frequency information into observable Moiré patterns. By acquiring multiple images and a computation trick a superresolved image is obtained. SIM provides resolution enhancement of 2X in each axis as compared to conventional microscopes. For a visible light, SIM provides an optical resolution of 100 nm. The challenges associated with optical nanoscopy of a living cell are photo-toxicity, special dye requirements and artifacts due to cell movement. SIM works with conventional dyes and is a wide-field technique making it suitable for imaging living cells. In this work, we will discuss the opportunities and challenges of imaging living cells using SIM. Two applications of optical nanoscopy of living cells will be discussed; a) imaging of mitochondria in a keratinocyte cell and Optical microscopy based on fluorescence has emerged as a vital tool in modern bio-medical imaging and diagnosis. Super-resolution bio-imaging allows gathering information from sub-cellular organelles. In structured illumination microscopy (SIM) the sample is illuminated with a grid-like interference patterns to encode higher spatial frequencies information into observable images (Moiré fringes). A super-resolved image is then decoded using computational trick. In this work, we used SIM to acquired super-resolved optical images of mitochondria from a live keratinocyte cell (see Fig 1). SIM provides resolution enhancement of 2X in each axis and contrast enhancement of 8X on a projected image. Time-lapsed imaging was used to study the dynamics of mitochondria in a live cell.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134270298","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
Quantum mechanics compatible Maxwell's stress tensor (presentation video) 量子力学兼容麦克斯韦应力张量(演示视频)
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-11-13 DOI: 10.1117/12.2063942
M. Mazilu
{"title":"Quantum mechanics compatible Maxwell's stress tensor (presentation video)","authors":"M. Mazilu","doi":"10.1117/12.2063942","DOIUrl":"https://doi.org/10.1117/12.2063942","url":null,"abstract":"There are many ways to calculate the optical forces acting on scattering particles such as Maxwell’s stress tensor, Lorentz forces, gradient and scattering forces, Lorenz-Mie formalism, T-matrix. All these approaches use the electromagnetic field and define the amount of linear momentum transferred to the scattering particles. The resulting momentum transferred is proportional to the intensity of the incident fields, however, the single photon momentum (hbar k) does not naturally appear in these classical expressions. In this paper, we discuss an alternative Maxwell’s stress tensor based formalism that renders the classical electromagnetic field momentum compatible to the quantum mechanical one.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-11-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121942782","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
Tunable frequency converter for terahertz frequency range based on space-time transformation 基于时空变换的太赫兹可调谐频率转换器
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-10-08 DOI: 10.1117/12.2062079
E. Gurvitz, A. Vozianova, M. Khodzitskiy
{"title":"Tunable frequency converter for terahertz frequency range based on space-time transformation","authors":"E. Gurvitz, A. Vozianova, M. Khodzitskiy","doi":"10.1117/12.2062079","DOIUrl":"https://doi.org/10.1117/12.2062079","url":null,"abstract":"The analytically realization of electromagnetic wave frequency conversion in a time-varying medium was shown by the two methods. The first method considers the optical analog of the electromagnetic wave redshift in the expanding universe using the transformation optics mathematical approach. The second one describes the transient process of pulse electromagnetic wave interaction with the time-varying medium using method of the second order Volterra integral equation. The frequency conversion was shown for several types of commercial laser wavelengths.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114470897","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: 3
Surface dielectric resonance and giant enhancement of Raman scattering 表面介电共振与拉曼散射的巨大增强
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-10-02 DOI: 10.1117/12.2063299
A. N. Lagarkov, I. Kurochkin, I. Ryzhikov, A. Vaskin, K. Afanasiev, I. Boginskaya, I. Budashov, A. K. Sarychev
{"title":"Surface dielectric resonance and giant enhancement of Raman scattering","authors":"A. N. Lagarkov, I. Kurochkin, I. Ryzhikov, A. Vaskin, K. Afanasiev, I. Boginskaya, I. Budashov, A. K. Sarychev","doi":"10.1117/12.2063299","DOIUrl":"https://doi.org/10.1117/12.2063299","url":null,"abstract":"We propose multiple resonances in the thin profiled dielectric films. The excitation of the dielectric resonances results in giant electric and magnetic field fluctuations. We observe dielectric enhanced Raman scattering in the investigated dielectric films.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128616181","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
Excitation of surface waves in the photonic crystal/graphene structure for terahertz frequency range 光子晶体/石墨烯结构表面波在太赫兹频率范围内的激发
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-10-02 DOI: 10.1117/12.2061204
A. Denisultanov, S. E. Azbite, M. Khodzitskiy
{"title":"Excitation of surface waves in the photonic crystal/graphene structure for terahertz frequency range","authors":"A. Denisultanov, S. E. Azbite, M. Khodzitskiy","doi":"10.1117/12.2061204","DOIUrl":"https://doi.org/10.1117/12.2061204","url":null,"abstract":"Photonic crystals are one of the most remarkable metamaterials for electromagnetic waves manipulation for last decades, therefore they can be used as filters, waveguides, polarization changers, superlenses, superprisms, etc. As well today graphene has attracted considerable attention due to the unusual properties. In this paper the excitation of surface waves in the photonic crystal bounded by graphene layer was investigated for terahertz frequency range from 0.1 to 1 THz. Peaks of transmissivity in band-gaps of photonic crystal that caused by excitation of surface waves were obtained. The control of frequency position of peaks by temperature and magnetic field was demonstrated.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128618369","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: 3
Interesting manifestations of spin orbit interaction and spin Hall shift of light in an optical trap 光阱中自旋轨道相互作用和光的自旋霍尔位移的有趣表现
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-09-30 DOI: 10.1117/12.2063145
Basudev Roy, N. Ghosh, S. Dutta Gupta, Ayan Banerjee
{"title":"Interesting manifestations of spin orbit interaction and spin Hall shift of light in an optical trap","authors":"Basudev Roy, N. Ghosh, S. Dutta Gupta, Ayan Banerjee","doi":"10.1117/12.2063145","DOIUrl":"https://doi.org/10.1117/12.2063145","url":null,"abstract":"The spin orbit interaction (SOI) of light leading to the evolution of trajectory dependent geometric phase and associated spin Hall shift (SHS) in circularly polarized light has led to several fascinating manifestations in scattering, tight focusing, and imaging processes. However, most of these observations are at the sub-wavelength level, with somewhat limited applications of a general nature. We investigate the SOI in an optical trap for a linearly polarized trapping beam where the both the trajectory dependent geometric phase as well as the SHS are magnified significantly due to a stratified medium. The stratified medium is created using an index mismatched cover slip that modifies the radial intensity distribution near the focal plane of the trap due to diffraction effects. The modified intensity distribution causes trapping of polystyrene beads in ring-like patterns, while the tight focusing in the stratified medium also leads to a large spin redirection geometric phase that creates intensity side lobes in the azimuthal direction near the focal plane. Single trapped asymmetric particles can be trapped in the side lobes and translated along the ring by changing the polarization angle of the input beam. A 3D analysis of polarization reveals the generation of polarization vortices as well as spatially separated regions of opposite circular polarizations near the focal plane leading to controlled rotation of trapped particles, again by a linearly polarized input beam. The study can have several interesting consequences in the manipulation of mesoscopic particles in an optical trap.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"298 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134326589","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
Absorption in photonic crystals: from order to disorder 光子晶体中的吸收:从有序到无序
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-09-29 DOI: 10.1117/12.2063088
C. Seassal, L. Lalouat, He Ding, E. Drouard, G. Gomard, Romain Peretti, Thierry Deschamp, F. Mandorlo, R. Orobtchouk, A. Fave
{"title":"Absorption in photonic crystals: from order to disorder","authors":"C. Seassal, L. Lalouat, He Ding, E. Drouard, G. Gomard, Romain Peretti, Thierry Deschamp, F. Mandorlo, R. Orobtchouk, A. Fave","doi":"10.1117/12.2063088","DOIUrl":"https://doi.org/10.1117/12.2063088","url":null,"abstract":"In this communication, we present the potentialities offered by 2D photonic crystals to trap and absorb photons in thin silicon layers. We will specifically focus on the impact of the photonic crystal unit cells symmetry, and the possibility to increase light absorption and generated photocurrent using multi-periodic and pseudo-disordered photonic nanostructures.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121943564","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
PT symmetry in optics and photonics 光学与光子学中的PT对称
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-09-29 DOI: 10.1117/12.2066228
D. Christodoulides, M. Miri
{"title":"PT symmetry in optics and photonics","authors":"D. Christodoulides, M. Miri","doi":"10.1117/12.2066228","DOIUrl":"https://doi.org/10.1117/12.2066228","url":null,"abstract":"PT-symmetric optical structures represent a new generation of artificial optical systems which utilize gain and loss in a balanced fashion in order to perform a desired task. Such non-Hemitian arrangements exhibit interesting properties which are otherwise unattainable in passive Hermitian systems. As a result, since the first experimental demonstration of PT-symmetry in coupled optical configurations, there has been a flurry of activities in understanding and utilizing PT-symmetric processes in optics. Here we review recent developments in the newly emerging field of PT-symmetric optics.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125859295","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: 4
Molecular bond Fano resonances in organic thin films enhanced by (A)SRR arrays (A)SRR阵列增强有机薄膜中的分子键Fano共振
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-09-29 DOI: 10.1117/12.2063046
Richard M. De La Rue, I. G. Mbomson, S. I. Khan, G. Sharp, B. Lahiri, N. Johnson, Henrique Vilhena, S. McMeekin
{"title":"Molecular bond Fano resonances in organic thin films enhanced by (A)SRR arrays","authors":"Richard M. De La Rue, I. G. Mbomson, S. I. Khan, G. Sharp, B. Lahiri, N. Johnson, Henrique Vilhena, S. McMeekin","doi":"10.1117/12.2063046","DOIUrl":"https://doi.org/10.1117/12.2063046","url":null,"abstract":"This presentation is concerned with nanophotonic structures, especially with arrays of asymmetric split-ring resonator (ASRR) structures, that may be exploited in a variety of sensing applications. These applications include bio-medical sensing, organic material sensing more generally - and environmental sensing. Specific attention has been paid to the identification of molecules of interest via their bond-resonance spectral signatures.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117279085","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
Graphene plasmons: properties and applications 石墨烯等离子体:性质与应用
Optics & Photonics - NanoScience + Engineering Pub Date : 2014-09-29 DOI: 10.1117/12.2060587
P. Avouris, D. Farmer, M. Freitag, Y. Li, T. Low, H. Yan, H. Wang
{"title":"Graphene plasmons: properties and applications","authors":"P. Avouris, D. Farmer, M. Freitag, Y. Li, T. Low, H. Yan, H. Wang","doi":"10.1117/12.2060587","DOIUrl":"https://doi.org/10.1117/12.2060587","url":null,"abstract":"I will discuss the optical properties and possible applications of graphene in photonics and plasmonics. I will review the basics of the single particle and collective excitations of graphene, discuss the mechanisms of photocurrent generation in graphene and the design and characteristics of graphene-based photodetectors. I will show that the coupling of light to localized graphene plasmons provides an excellent way of enhancing the strength of graphene-light interaction. Plasmon excitations in graphene micro- and nano-structures and their use in graphene devices in the infrared and terahertz ranges of the EM spectrum will be discussed. The interactions of graphene plasmons with intrinsic graphene and substrate phonons and their implications will also be analyzed.","PeriodicalId":128143,"journal":{"name":"Optics & Photonics - NanoScience + Engineering","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130995576","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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