Recent progress and applications of thermal lens spectrometry and photothermal beam deflection techniques in chemical analysis and materials' characterization

lecture at Marquette University, Milwaukee, June 13, 2023

Abstract

Initially the theoretical background relevant to recent developments of thermal lens spectrometry (TLS) which include TLS detection in liquid chromatography and in microfluidic flow injection analysis (μFIA) and to non-contact and non-destructive characterization of composite materials by beam deflection spectrometry (BDS) is presented. The advantages and basic characteristics of the TLS and BDS techniques are illustrated by presenting applications such as the determination of free bilirubin in endothelial cells by HPLC-TLS, studies of diffusion in Taylor-type microfluidic flows by thermal lens microscopy (TLM), μFIA-TLM detection of microcystin-LR and Cr(VI) in waters, and by the dept profiling of multi-layered coatings of orthopaedic implants. In the main part of the presentation the results of joint MU-UNG research are presented with emphasis on BDS and TLS characterisation of biocomposite materials from cellulose and chitosan or keratin with added Ag nanoparticles, sporopollenin capsules or antibiotics. The focus is on BDS determination of thermal parameters including thermal diffusivity and related properties relevant for medical applications, such as porosity and surface roughness, as well as on the TLS detection of Ag and other nanoparticles applied in studies of nanoparticle leaching from biocomposites.

Keywords

Optotermična spektrometrija;TLS;BDS;kemijska analiza;karakterizacija materialov;biokompoziti;

Data

Language:	English
Year of publishing:	2023
Typology:	3.14 - Invited Lecture at Foreign University
Organization:	UNG - University of Nova Gorica
UDC:	54
COBISS:	169538819
Views:	257
Downloads:	0
Average score:	0 (0 votes)
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Other data

Type (COBISS):	Not categorized
ID:	20360117