Applications of Optics and Photonics最新文献_第5页

Fabrication and characterization of a cell electrostimulator device combining physical vapor deposition and laser ablation 结合物理气相沉积和激光烧蚀的细胞电刺激装置的制造和表征

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2271624

Ángel L. Aragón, E. Pérez, A. Pazos, C. Bao-Varela, D. Nieto

{"title":"Fabrication and characterization of a cell electrostimulator device combining physical vapor deposition and laser ablation","authors":"Ángel L. Aragón, E. Pérez, A. Pazos, C. Bao-Varela, D. Nieto","doi":"10.1117/12.2271624","DOIUrl":"https://doi.org/10.1117/12.2271624","url":null,"abstract":"In this work we present the process of fabrication and optimization of a prototype of a cell electrostimulator device for medical application combining physical vapor deposition and laser ablation. The fabrication of the first prototype begins with a deposition of a thin layer of 200 nm of aluminium on a borosilicate glass substrate using physical vapor deposition (PVD). In the second stage the geometry design of the electrostimulator is made in a CAD-like software available in a Nd:YVO4 Rofin Power line 20E, operating at the fundamental wavelength of 1064 nm and 20 ns pulse width. Choosing the proper laser parameters the negative of the electrostimulator desing is ablated. After that the glass is assembled between two polycarbonate sheets and a thick sheet of polydimethylsiloxane (PDMS). The PDMS sheet has a round hole in where cells are placed. There is also included a thin soda-lime silicate glass (100 μm) between the electrostimulator and the PMDS to prevent the cells for being in contact with the electric circuit. In order to control the electrical signal applied to the electrostimulator is used a digital I/O device from National Instruments (USB-6501) which provides 5 V at the output monitored by a software programmed in LabVIEW. Finally, the optical and electrical characterization of the cell electrostimulator device is presented.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128236507","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

Electromagnetic properties of a monolayer of polarisable particles deposited on graphene 沉积在石墨烯上的单层极化粒子的电磁特性

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2271960

André Souto, R. M. Pereira, Jaime E. Santos, N. Peres, M. Vasilevskiy

{"title":"Electromagnetic properties of a monolayer of polarisable particles deposited on graphene","authors":"André Souto, R. M. Pereira, Jaime E. Santos, N. Peres, M. Vasilevskiy","doi":"10.1117/12.2271960","DOIUrl":"https://doi.org/10.1117/12.2271960","url":null,"abstract":"Interesting plasmonic effects can arise from the combination of small polarisable particles with graphene, related to surface plasmon-polaritons (SPPs) supported by the latter in the terahertz (THz) spectral range. The electromagnetic coupling between graphene SPPs and dipole moments of nanoparticles (NPs) deposited on top of it gives rise to optical properties that aren’t present in the individual components of this system. The NPs’ polarisability is renormalized due to the electromagnetic back action of the SPPs which are excited in graphene when an external propagating electromagnetic wave impinges on the particle. Moreover, beyond the usual dipole-dipole interaction, an indirect particle-particle coupling arises via polarisation charges induced on the graphene-covered interface by each particle – this indirect coupling oscillates with the interparticle distance. We derived coupled-dipole equations taking into account all these effects, allowing us to calculate an effective optical conductivity of the particles’ monolayer. One of the G+NPs system’s unique properties is a collective polariton mode, causing a considerable enhancement of the THz radiation absorption in graphene, while the reflection drops to nearly zero for a broad range of angles of incidence. The frequency of this resonant mode can be adjusted by changing the Fermi energy in graphene via electrostatic gating and therefore it can be used for electrically controlled reflection and transmission of THz radiation","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128263885","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

Wavefront coding for visual optics 视觉光学的波前编码

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272065

E. Acosta, J. Arines, C. Almaguer

引用次数: 0

Modelling of optoelectronic circuits based on resonant tunneling diodes 基于谐振隧道二极管的光电电路建模

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2271318

João F. M. Rei, James A. Foot, G. C. Rodrigues, J. Figueiredo

引用次数: 1

Rapid Eye Movements (REMs) and visual dream recall in both congenitally blind and sighted subjects 先天失明和视力正常受试者的快速眼动和视觉梦回忆

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2276048

Helder Bértolo, T. Mestre, A. Barrio, B. Antona

{"title":"Rapid Eye Movements (REMs) and visual dream recall in both congenitally blind and sighted subjects","authors":"Helder Bértolo, T. Mestre, A. Barrio, B. Antona","doi":"10.1117/12.2276048","DOIUrl":"https://doi.org/10.1117/12.2276048","url":null,"abstract":"Our objective was to evaluate rapid eye movements (REMs) associated with visual dream recall in sighted subjects and congenital blind. During two consecutive nights polysomnographic recordings were performed at subjects home. REMs were detected by visual inspection on both EOG channels (EOG-H, EOG-V) and further classified as occurring isolated or in bursts. Dream recall was defined by the existence of a dream report. The two groups were compared using t-test and also the two-way ANOVA and a post-hoc Fisher test (for the features diagnosis (blind vs. sighted) and dream recall (yes or no) as a function of time). The average of REM awakenings per subject and the recall ability were identical in both groups. CB had a lower REM density than CS; the same applied to REM bursts and isolated eye movements. In the two-way ANOVA, REM bursts and REM density were significantly different for positive dream recall, mainly for the CB group and for diagnosis; furthermore for both features significant results were obtained for the interaction of time, recall and diagnosis; the interaction of recall and time was however, stronger. In line with previous findings the data show that blind have lower REMs density. However the ability of dream recall in congenitally blind and sighted controls is identical. In both groups visual dream recall is associated with an increase in REM bursts and density. REM bursts also show differences in the temporal profile. REM visual dream recall is associated with increased REMs activity.","PeriodicalId":150522,"journal":{"name":"Applications of Optics and Photonics","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115846688","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: 7

Strain sensor based on hollow microsphere Fabry-Perot cavity 基于空心微球法布里-珀罗腔的应变传感器

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2275862

Catarina S. Monteiro, Susana O. Silva, O. Frazão

引用次数: 0

Optical, colloidal and biological properties of up-converting nanoparticles embedded in polyester nanocarriers 上转化纳米颗粒嵌入聚酯纳米载体的光学、胶体和生物学特性

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2271694

D. Wawrzyńczyk, J. Kulbacka, U. Bazylińska

引用次数: 0

Simultaneous measurement of temperature and refractive index based on microfiber knot resonator integrated in an abrupt taper Mach-Zehnder interferometer 基于集成在突锥马赫-曾德干涉仪中的微光纤结谐振器的温度和折射率同步测量

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2275813

André D. Gomes, O. Frazão

引用次数: 2

Interchannel collisions of strong dispersion-managed solitons with different energies in the presence of higher-order effects 高阶效应下不同能量强色散控制孤子的通道间碰撞

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2269509

F. Diaz-Otero, L. Pedrosa-Rodriguez, O. Guillan-Lorenzo

引用次数: 0

Evaluation of FEL lamp seasoning behavior for use as a spectral irradiance standard 光谱辐照度标准用FEL灯的调味性能评价

Applications of Optics and Photonics Pub Date : 2017-08-22 DOI: 10.1117/12.2272142

A. G. G. Ferreira, J. Moraes

引用次数: 0