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Thermal lens spectrometry - still a technique on the horizon?
Mladen Franko, 2015

Abstract: In 1980’s thermal lens spectrometry (TLS) was still considered as a “spectrometric technique on the horizon” as one can also read from one of the textbooks on spectrochemical analysis of that time. Intensive development of thermal lens instrumentation and methods of chemical analysis and material characterisation has however resulted in substantial progress in this field, which is evident from important instrumental innovations and first commercial instruments (i.e. thermal lens microscopes -TLM) designed for lab-on-a-chip chemistry as well as from novel applications of TLS in various areas, where highly sensitive and rapid chemical analysis of complex samples is needed, including food safety and quality control, environmental analysis and biomedical diagnostics. This presentation is a review of most significant contributions and applications of thermal lens spectrometry, with emphasis on most recent achievements in instrumentation, which culminated into construction of novel optimized TLM instruments, capable of exploiting the tuneability of incoherent light sources and enabled novel applications particularly in micro-fluidics. Based on latest progress relying on bio-analytical assays and micro-fluidic flow injection with TLM detection we have also witnessed firs routine applications of TLS in analytical and diagnostic laboratories, which on wine side actually classifies TLS as a conventional and routine analytical tool, but at the same time opens new horizons for development and applications of this ultrasensitive and rapid spectrometric technique.
Found in: ključnih besedah
Summary of found: ...lab-on-a-chip chemistry as well as from novel applications of TLS in various areas, where highly...
Keywords: Thermal lens spectrometry, applications, Liquid chromatography, flow injection analysis, bioanalytical methods
Published: 29.03.2016; Views: 3537; Downloads: 0
.pdf Fulltext (609,15 KB)

Determination of Trace Cr(VI) with Diphenylcarbazide by μFIA–Thermal Lens Microscopy
Tatyana Gor’kova, Michail Proskurnina, Mingqiang Liu, Mladen Franko, 2016, original scientific article

Abstract: The optimum reaction parameters for the interaction of hexavalent chromium [Cr(VI)] with diphenylcarbazide in microfluidic chips (μFIA) with thermal-lens microscopic detection were selected. The characteristic feature of the applied flow scheme is the injection of the reagent into the stream containing the test metal, which enables in-field and real-time monitoring of Cr(VI) simply by flowing the sample continuously through the microchip. The limit of detection of Cr(VI) under the selected conditions (signal generating wavelength, 514.5 nm; excitation power, 100 mW; detection position, 10 cm downstream from the mixing zone of the microchip; flow rate 10 μL min–1; injection volume, 1.4 μL) is 15 ng mL–1 (2.9 × 10–7 mol L–1). The linear range is 40 ng mL–1 – 10 μg mL–1 with a relative standard deviation no higher than 10% in the concentration range 0.1–1 μg mL–1. The online monitoring by this scheme provides the possibility of up to 360 analyses per hour.
Found in: ključnih besedah
Summary of found: ...Photothermal lensing, thermal-lens microscopic detection, microfluidic applications, μFIA, hexavalent chromium, diphenylcarbazide...
Keywords: Photothermal lensing, thermal-lens microscopic detection, microfluidic applications, μFIA, hexavalent chromium, diphenylcarbazide
Published: 12.12.2016; Views: 2592; Downloads: 0
.pdf Fulltext (312,62 KB)

Thermal Lens Spectrometry and Microscopy Analytical Chemist’s Approach
Mladen Franko, unpublished invited conference lecture

Abstract: This lecture introduces the basic concepts and recent progres in theory, instrumentation and applications of thermal lens spectrometry, thermal lens microscopy and their utilization for highly sensitive, and high throughput detection in liquid chromatography, flow injectionanalysis in microfluidic systems.
Found in: ključnih besedah
Summary of found: ...and recent progres in theory, instrumentation and applications of thermal lens spectrometry, thermal lens microscopy...
Keywords: Thermal lens spectrometry, TLS microscopy, theory, applications
Published: 01.03.2017; Views: 2834; Downloads: 1
.pdf Fulltext (17,07 MB)
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Technology applications for health safety decision making under COVID-19 pandemic management
Rajan Gupta, Saibal K. Pal, Aayush Khattar, King Baliyan, 2020, published scientific conference contribution

Abstract: A lot of new technological applications are emerging to combat the deadly novel coronavirus. This research study gives an overview of different applications that are developed by Government Institutions, Private Firms, and Individual Citizens across the world. The applications are reviewed based on their widespread use, effectiveness, availability to the broader audience, cost to implement it, concerns regarding the privacy and information collected by these apps and systems. The major eight areas of technology applications covered in this study are Contact Tracing, Social Distancing & Mask Detection, Live-feeds based Dashboards, Information Searching, Big Data and Robotics, Web-based Disease Surveillance Tools, Patient-level Information, Doctor-Patient interaction, and Informatory Chatbots. More than 100 apps were collected for this research survey to conclude the different categories in which technology is being used for decision making. This study will be useful for various health administrators, professionals, researchers, and academicians.
Found in: ključnih besedah
Keywords: COVID-19, coronavirus, technology applications, contact tracing, social distancing, chatbots, data lakes
Published: 02.04.2021; Views: 314; Downloads: 15
URL Fulltext (0,00 KB)
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Technological and analytical review of contact tracing apps for COVID-19 management
Poonam Chaudhary, Saibal K. Pal, Rajan Gupta, Gaurav Pandey, 2021, original scientific article

Abstract: Role of technology is improving for COVID-19 management all around the world. Usage of mobile applications, web applications, cloud computing, and related technologies have helped many public administrators worldwide manage the current pandemic. Contact tracing applications are such mobile app solutions that are used by more than 100 countries today. This study presents a structured research review-based framework related to multiple contact tracing applications. The various components of the framework are related to technological working, design architecture, and feature analysis of the applications, along with the analysis of the acceptance of such applications worldwide. Also, components focusing on the security features and analysis of these applications based on Data Privacy, Security Vetting, and different attacks have been included in the research framework. Many applications are yet to explore the analytical capabilities of the data generated through contact tracing. The various use-cases identified for these applications are detecting positive case probability, identifying a containment zone in the country, finding regional hotspots, monitoring public events & gatherings, identifying sensitive routes, and allocating resources in various regions during the pandemic. This study will act as a guide for the users researching contact tracings applications using the proposed four-layered framework for their app assessment.
Found in: ključnih besedah
Summary of found: ...all around the world. Usage of mobile applications, web applications, cloud computing, and related technologies...
Keywords: novel corona virus, location technology, contact tracing applications, Aarogya Setu App, data science, data analysis
Published: 02.04.2021; Views: 329; Downloads: 0
.pdf Fulltext (3,82 MB)

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