In-vivo opto-thermal measurement of epidermal thickness
نویسندگان
چکیده
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.
منابع مشابه
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.
متن کاملWeak Force Measurement in Bistable Optomechanical System
One of the main milestones in the study of opto-mechanical system is to increase the sensitivity of weak forces measurement up to the standard quantum limit. We have studied the detection of weak force under a bistable condition in red detuned regime. In this case, dynamics of the system behaves asymptotically similar to stationary state and applying external force affects phase and fluctuation...
متن کاملFast 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...
متن کاملDimensional stability of mirror materials for opto-mechanical reference system
Sensors, IR beams and lasers used in many opto-mechanical systems have stringent alignment retention requirements for use over an extended temperature range. Thermal effects are the primary cause for alignment drift during operation. Thermal expansion and contraction of materials can result in dimensional instability of mirror surfaces. This paper focuses on the importance of dimensional stabil...
متن کاملParasitic Effect of Tube Wall Longitudinal Heat Conduction on Cryogenic Gas Temperature
Longitudinal heat conduction is an important parameter in the cryogenic field, especially in cryogenic heat exchangers. In the present work, the parasitic effect of tube wall longitudinal heat conduction on temperature measurement has been studied in cryogenic laminar hydrogen flow. The effects of various parameters such as wall cold end temperature, wall thermal conductivity, gas volumetric fl...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2017