نتایج جستجو برای: near infrared light

تعداد نتایج: 703196  

Journal: :Physics in medicine and biology 2010
Hamid Dehghani Frederic Leblond Brian W Pogue Fabien Chauchard

The use of the spectral derivative method in visible and near-infrared optical spectroscopy is presented, whereby instead of using discrete measurements around several wavelengths, the difference between nearest neighbouring spectral measurements is utilized. The proposed technique is shown to be insensitive to the unknown tissue and fibre contact coupling coefficients providing substantially i...

Journal: :Annual review of physical chemistry 2012
Eric C Le Ru Pablo G Etchegoin

A general overview of the field of single-molecule (SM) surface-enhanced Raman spectroscopy (SERS) as it stands today is provided. After years of debates on the basic aspects of SM-SERS, the technique is emerging as a well-established subfield of spectroscopy and SERS. SM-SERS is allowing the observation of subtle spectroscopic phenomena that were not hitherto accessible. Examples of the latter...

Journal: :Physics in medicine and biology 2000
E B Hanlon R Manoharan T W Koo K E Shafer J T Motz M Fitzmaurice J R Kramer I Itzkan R R Dasari M S Feld

Raman spectroscopy is a potentially important clinical tool for real-time diagnosis of disease and in situ evaluation of living tissue. The purpose of this article is to review the biological and physical basis of Raman spectroscopy of tissue, to assess the current status of the field and to explore future directions. The principles of Raman spectroscopy and the molecular level information it p...

2001
Martin Harwit Michael G Hauser M G Hauser

The cosmic infrared background (CIB) radiation was a long-sought fossil of energetic processes associated with structure formation and chemical evolution since the Big Bang. The COBE Diffuse Infrared Background Experiment (DIRBE) and Far Infrared Absolute Spectropho-tometer (FIRAS) were specifically designed to search for this background from 1.25 µm to millimeter wavelengths. These two instrum...

2012
Truong Quang Dang Khoa

Brain Computer Interface (BCI) has been recently increased in research. Functional Near Infrared Spectroscope (fNIRs) is one the latest technologies which utilize light in the near-infrared range to determine brain activities. Because near infrared technology allows design of safe, portable, wearable, non-invasive and wireless qualities monitoring systems, fNIRs monitoring of brain hemodynamics...

2015
Isaac O. Afara Juuso T. Honkanen Elvis K. Danso Rami K. Korhonen Jukka S. Jurvelin Juha Töyräs E. K. Danso

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