Opto-thermal radiometry for in-vivo nail measurements

Opto-thermal technique for in-vivo stratum corneum hydration measurement

A new method for measuring stratum corneum hydration in-vivo, using opto-thermal transient emission radiometry with 2.94pm Er:YAG excitation and wavelength selective detection, is described. Results on skin recovery following exogenous hydration, skin stripping with Sellotape and wound healing are presented.

Fast Focal Plane Array Detector and Readout for Pulsed Opto- Thermal Radiometry

Mid-infrared focal plane array spectroscopic or spatial imaging of opto-thermal transient emission is reported. Pulsed near-surface optical heating of arbitrary unprepared room temperature surfaces produce depth-resolved transient thermal emissions in the mid-infrared chemical fingerprint spectral region. Two optical configurations, both offering a significant advance in pulsed photothermal rad...

In-vivo opto-thermal measurement of epidermal thickness

We report a new opto-thermal method of measuring epidermal thickness in-vivo, using thermal waves generated within the epidermis which reach the surface after transit delays that depend on depth. The method is illustrated with a thickness map of a forearm, a tape stripping sequence and subsequent wound healing.

The 1990 NIST Scales of Thermal Radiometry

Following an absolute NIST measurement of the freezing temperature of gold and the adoption of the International Temperature Scale of 1990 (ITS-90), NIST has adopted new measurement scales for the calibration services based on thermal radiometry. In this paper, the new scales are defined and compared to the ITS-90, and the effects of the scale changes on NIST measurement services in optical pyr...

Microfluidic Transport Driven by Opto-Thermal Effects