Now showing items 1-10 of 532
Photogrammetric refinement of laser-based building roof contours
In this paper a photogrammetric method is proposed for refining 3D building roof contours extracted from airborne laser scanning data. It is assumed that laser-derived planar faces of roofs are potentially accurate, while ...
The effect of low intensity laser therapy on wound healing in Streptozotocin-induced diabetic rats
Diabetes Mellitus is a condition that results in a delay of the wound healing process, that is associated with an insufficient production of collagen, a decrease of the amount of collagen fibrils and deficient blood flow ...
Effects of laser beam energy on the pulsed Nd:YAG laser welding of thin sheet corrosion resistant materials
(Trans Tech Publications Ltd, 2014-01-01)
The aim of this study was to value the possibility to join, for pulsed Nd:YAG laser welding, thin foils lap joints for sealing components in corrosive environment. Experimental investigations were carried out using a pulsed ...
Enhanced multi-wavelength holographic profilometry by laser mode selection
The application of multi-wavelength holography for surface shape measurement is presented. In our holographic setup a Bi12TiO 20 (BTO) photorefractive crystal was the holographic recording medium and a multimode diode laser ...
Variation of Laser Intensity on the Healing of Cutaneous Wounds
Tissue repair is an integration of dynamic interactive processes that involves soluble mediators, blood components, production of extra-cellular matrix and mesenchymal cells. Many studies involving the use of LLLT shows ...
DCOOD optically pumped by a13CO2 laser: New terahertz laser lines
In this work, we report new optically pumped terahertz laser lines from DCOOD. An isotopic 13CO2 laser was used for first time as pump source, and a Fabry-Perot open cavity was used as a terahertz laser resonator. Optoacoustic ...
Ultrafast reflectivity dynamics in bis (n-butylimido) perylene thin films
Using pump-probe reflectometry, we study the ultrafast excited-state dynamics in thin films of BuPTCD, an organic semiconductor, deposited on gold nanoparticles. We observe depletion of the ground state and excited state ...
Process and parameter optimisation for micro structuring of 3D freeform metallic surfaces: A comparative study of short-pulse (nanosecond) and ultrafast (picosecond, femtosecond) laser ablation
Layer-based laser ablation of three dimensional micro structured freeform surfaces has become of significant importance for technical applications such as biomimetic surfaces in recent years. In order to identify the optimum ...
Experimental Demonstration Of Attenuation Resistant Frozen Waves
(Spie-Int Soc Optical EngineeringBellingham, 2016)