Istituto di Scienza e Tecnologie dell'Informazione     
D'Acunto M., Colantonio S., Moroni D., Salvetti O. Detection limit of biomarkers using the near-infrared band-gap fluorescence of single-walled carbon nanotubes. In: Journal of Modern Optics, vol. 57 (18) pp. 1695 - 1699. Special issue: Advanced Infrared Technology and Applications. Selected papers from the 10th International Workshop, 8-11 September 2009. L. Abbozzo Ronchi et al. (eds.). Taylor & Francis Group, 2010.
Progress is being made in the development of microanalytical systems for biosensing. Because the sensor signal-to-noise ratio increases with decreasing size for many devices, considerable effort to fabricate small sensors is going to be addressed. Due to their hollow cylindrical structure, carbon nanotubes (CNTs) are considered very promising for many potential nano-device applications. Fluorescence microscopy in the near-infrared (NIR) between 950 and 1600nm has been developed as a novel method to image and study single-walled carbon nanotubes (SWNTs) in a variety of environments. Recently, hybridisation of DNA using NIR band-gap fluorescence has been experimentally demonstrated. We describe a numerical simulation, where the fluorescence shift energy is connected to exciton density variation when the molecular recognition is located on the SWNT immersed in a physiological solution.
Il lavoro ha presentato la possibilita' di osservare shift nell'infrarosso prossimo dovuti a processi di ibridizzazione di DNA su Nanotubo in Carbonio a Singtola Parete (Single-walled Carbon Nanotube).
URL: http://www.informaworld.com/smpp/content~db=all?content=10.1080/09500341003658170
DOI: 10.1080/09500341003658170
Subject Near-infrared
Band-gap fluorescence
Single-walled carbon nanotubes
G.1.8 Partial Differential Equations
G.3 Probability and Statistics

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