2011 International Workshop on Biophotonics最新文献_第4页

Fabrication and optical stability from silanized gold nanorods as transducers of near infrared light 近红外光换能器硅化金纳米棒的制备及其光学稳定性

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954853

F. Ratto, P. Matteini, F. Rossi, R. Pini, S. Centi, F. Fusi

{"title":"Fabrication and optical stability from silanized gold nanorods as transducers of near infrared light","authors":"F. Ratto, P. Matteini, F. Rossi, R. Pini, S. Centi, F. Fusi","doi":"10.1109/IWBP.2011.5954853","DOIUrl":"https://doi.org/10.1109/IWBP.2011.5954853","url":null,"abstract":"We give new insight into multifunctional nanoparticles with light extinction in the therapeutic window, optical stability even on aggregation, as well as possibility of bio-conjugation. The optical response of these particles rests on gold nanorods, which interact with near infrared (NIR) light via plasmonic oscillations, which is an interface effect. Therefore the optical behavior of these particles is challenged by factors which typically occur in the biological sample and under excitation, such as aggregation (e.g. inside endocytic vesicles) and shape transformations. Here silanization of the gold nanorods is proposed as one effective solution to overcome these issues. A shell of porous silica confers isolation from the local environment and additional stability, and also proves suitable for PEGylation and bio-conjugation with e.g. biological macromolecules. We engineer models of aggregation of these particles, in order to investigate its principal effect on their optical response. While in the absence of silica gold nanorods undergo substantial degradation of their plasmonic bands, silanization proves excellent to maintain pristine optical properties even after critical flocculation.","PeriodicalId":142421,"journal":{"name":"2011 International Workshop on Biophotonics","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124715044","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

Self-mixing interferometer for direct vibration measurement on human skin 用于人体皮肤直接振动测量的自混合干涉仪

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954835

M. Norgia, A. Pesatori, I. Milesi, R. Dellacà

引用次数: 0

Modelling biochemical interactions in a microfluidic assisted porous silicon microarray for optical sensing 模拟生物化学相互作用在微流体辅助多孔硅微阵列光学传感

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954860

E. Orabona, I. Rea, I. Rendina, L. de Stefano

引用次数: 2

Dispensing and manipulation of nano-drops by pyro-EHD (electro-hydro-dynamic) effect 利用电-流体动力效应对纳米滴剂进行点胶和操作

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954863

S. Coppola, V. Vespini, S. Grilli, M. Paturzo, P. Ferraro, L. De Petrocellis, P. Orlando

引用次数: 0

Nanostructured substrates for surface plasmon resonance sensors 表面等离子体共振传感器的纳米结构衬底

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954821

A. Duval, M. Nakkach, A. Bellemain, J. Moreau, M. Canva, A. Dhawan, T. Vo‐Dinh

{"title":"Nanostructured substrates for surface plasmon resonance sensors","authors":"A. Duval, M. Nakkach, A. Bellemain, J. Moreau, M. Canva, A. Dhawan, T. Vo‐Dinh","doi":"10.1109/IWBP.2011.5954821","DOIUrl":"https://doi.org/10.1109/IWBP.2011.5954821","url":null,"abstract":"Surface Plasmon Resonance (SPR) sensors are usually based on continuous thin metallic films and coupling of propagative plasmon (PP) modes using high index prism or grating. The quantitative monitoring of the surface evolution is performed by measuring either shift in angular or spectral dip position, or by reflectivity variation in the slope of the angulo-spectral coupling curve. Such sensors are studied in many laboratories and used in a growing number of commercial devices. It appears however that these systems are reaching their limits in terms of sensitivity [1]. In the field of plasmonic sensing, many other works are devoted to the study of metallic nanoparticles. We anticipate that using nanostructured substrates for exciting coupled localized plasmon (CLP) or quasi propagating plasmon (QPP) will allow to further increase the sensors capabilities, in particular in terms of sensitivity. Samples were realized using either e-beam or deep-UV lithography based techniques. Experimental characterizations were conducted using lab-made angulo-spectral SPR Imaging systems [2]. Using RCWA simulations, we have calculated the plasmonics responses, in term of angulo-spectral reflectivity, of nanostructures. A novel narrow groove plasmonic nano-grating sensing configuration exhibits the highest potential [3].","PeriodicalId":142421,"journal":{"name":"2011 International Workshop on Biophotonics","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-06-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132843272","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

Micro-Raman spectroscopy on human mammary epithelial cells irradiated by different doses of X-Rays 不同剂量x射线照射人乳腺上皮细胞的微拉曼光谱研究

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954828

R. Risi, L. Manti, G. Perna, M. Lasalvia, V. Capozzi, M. Lepore

引用次数: 0

Magnetophotonic crystals with metalized surfaces: an approach to optical biosensors 表面金属化的磁光子晶体:光学生物传感器的一种方法

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954808

A. Baryshev, K. Kawasaki, M. Inoue

引用次数: 0

Long range surface plasmon resonance bacterial pathogen biosensor with magnetic nanoparticle assay 具有磁性纳米粒子测定的远程表面等离子体共振细菌病原体生物传感器

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954795

Yi Wang, W. Knoll, J. Dostálek

引用次数: 1

Single molecule Fluorescent Resonance Energy Transfer Scanning Near-field Optical Microscopy 单分子荧光共振能量转移扫描近场光学显微镜

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954797

S. Sekatskii

引用次数: 1

Integrated lasers for polymer based lab-on-a-chip systems 用于基于聚合物的芯片实验室系统的集成激光器

2011 International Workshop on Biophotonics Pub Date : 2011-06-08 DOI: 10.1109/IWBP.2011.5954812

C. Vannahme, M. Schelb, S. Klinkhammer, U. Lemmer, T. Mappes

引用次数: 1