Studying the Effect of CO2 Laser Treatment on the Fabric Hand of Cotton and Cotton/Polyester Blended Fabric | Chapter 5 | Current Perspectives on Chemical Sciences Vol. 4

Fabric hand has been identified as one of fashion textiles' most significant efficiency attributes. It is described as "perceived complete aesthetic quality of fabric." The consistency of the textile content is experienced primarily by touching and has a direct effect on the appeal of the product. The effect of laser treatment on the hand properties of cotton and cotton/polyester blended fabric using the PhabrOmeter method is compared in this paper. Five fabric hand characteristics were obtained, namely stiffness, smoothness, softness, wrinkle recovery rate, and drapability, and it was shown that laser treatment could be used effectively to improve the hand of the fabric. The fabrics were found to have enhanced drapability and wrinkle recovery after laser treatment in the case of pure cotton woven fabrics. After laser irradiation, stiffness was found to be comparatively higher in cotton/polyester blended fabrics. Results obtained for the hand properties of the fabric show that laser treatment can be used effectively to improve various aspects of fabrics, including stiffness, smoothness, softness, drapability, and recovery of wrinkles.

Author (s) Details

On-na Hung
Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.

Chi-Wai Kan
Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.

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A Novel Optical Oximeter via Absorption Spectra-Based CO2 Laser Photothermal Effects | Chapter 6 | Recent Research Advances in Biology Vol. 1

 

Spectroscopic and histological study of CO2 laser interaction with rats tissues were carried out. We

detected for the first time the changes in optical absorption spectra of rat's tissues with selective CO2

laser optical densities ranging from 20.64 to 34.40W/cm2. The laser exposed tissues show higher

absorbance in hemoglobin than that for the unexposed tissue. Using the same laser and same optical

densities, the absorption spectra of fresh blood were measured. Much intense peaks of hemoglobin in

the exposed fresh blood than that for the corresponding peaks for the tissue were detected. A scheme

based on recent experimental findings is proposed for explanation of this novel phenomenon. The

histological study shows thermal damage of blood vessels localized at the dermis layer. At high laser

optical densities a vessel rupture with hemorrhage were occurred. The results indicate a pronounced

modification of skin absorption properties by laser irradiation. Such an effect is due to thermally

induced biophysical and biochemical processes inside the highly heterogeneous tissue structure. A

clinical oximeter can be optimized by using CO2 laser Photothermal effects This device plays an

important role during COVID-19 pandemic.

 

Author (s) Details

Hassan H. Mohammed

Physics Department, College of Science, University of Basrah, Basrah, Iraq and Iraq University College, Department of Computer Engineering Technology, Alestiqlal Street, Basrah, Iraq.

Muzahim M. Abdullah

Physics Department, College of Science, University of Basrah, Basrah, Iraq.

Amjad Al-Asadi

Physics Department, College of Science, University of Basrah, Basrah, Iraq.

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