Search Results

You are looking at 1 - 5 of 5 items for

  • Author: Zbigniew Bielecki x
Clear All Modify Search
Open access

Zbigniew Bielecki, Jacek Janucki, Adam Kawalec, Janusz Mikołajczyk, Norbert Pałka, Mateusz Pasternak, Tadeusz Pustelny, Tadeusz Stacewicz and Jacek Wojtas

Sensors and Systems for the Detection of Explosive Devices - An Overview

The paper presents analyses of current research projects connected with explosive material sensors. Sensors are described assigned to X and γ radiation, optical radiation sensors, as well as detectors applied in gas chromatography, electrochemical and chemical sensors. Furthermore, neutron techniques and magnetic resonance devices were analyzed. Special attention was drawn to optoelectronic sensors of explosive devices.

Open access

Janusz Mikołajczyk, Zbigniew Bielecki, Maciej Bugajski, Józef Piotrowski, Jacek Wojtas, Waldemar Gawron, Dariusz Szabra and Artur Prokopiuk

Abstract

The article presents state of work in technology of free-space optical communications (Free Space Optics − FSO). Both commercially available optical data links and their further development are described. The main elements and operation limiting factors of FSO systems have been identified. Additionally, analyses of FSO/RF hybrid systems application are included. The main aspects of LasBITer project related to such hybrid technology for security and defence applications are presented.

Open access

Janusz Mikołajczyk, Zbigniew Bielecki, Tadeusz Stacewicz, Janusz Smulko, Jacek Wojtas, Dariusz Szabra, Łukasz Lentka, Artur Prokopiuk and Paweł Magryta

Abstract

Sensing technology has been developed for detection of gases in some environmental, industrial, medical, and scientific applications. The main tasks of these works is to enhance performance of gas sensors taking into account their different applicability and scenarios of operation. This paper presents the descriptions, comparison and recent progress in some existing gas sensing technologies. Detailed introduction to optical sensing methods is presented. In a general way, other kinds of various sensors, such as catalytic, thermal conductivity, electrochemical, semiconductor and surface acoustic wave ones, are also presented. Furthermore, this paper focuses on performance of the optical method in detecting biomarkers in the exhaled air. There are discussed some examination results of the constructed devices. The devices operated on the basis of enhanced cavity and wavelength modulation spectroscopies. The experimental data used for analyzing applicability of these different sensing technologies in medical screening. Several suggestions related to future development are also discussed.

Open access

Janusz Mikołajczyk, Jacek Wojtas, Zbigniew Bielecki, Tadeusz Stacewicz, Dariusz Szabra, Paweł Magryta, Artur Prokopiuk, Arkadiusz Tkacz and Małgorzata Panek

Abstract

The paper describes an integrated laser absorption system as a potential tool for breath analysis for clinical diagnostics, online therapy monitoring and metabolic disorder control. The sensors operate basing on cavity enhanced spectroscopy and multi-pass spectroscopy supported by wavelength modulation spectroscopy. The aspects concerning selection of operational spectral range and minimization of interference are also discussed. Tests results of the constructed devices collected with reference samples of biomarkers are also presented. The obtained data provide an opportunity to analyse applicability of optoelectronic sensors in medical screening.

Open access

Marek Szczepkowski, Tomasz Banasiewicz, Piotr Krokowicz, Adam Dziki, Grzegorz Wallner, Michał Drews, Roman Herman, Zbigniew Lorenc, Piotr Richter, Krzysztof Bielecki, Wiesław Tarnowski, Jan Kruszewski, Józef Kładny, Stanisław Głuszek, Wojciech Zegarski, Wojciech Kielan, Krzysztof Paśnik, Marek Jackowski, Mariusz Wyleżoł, Zoran Stojcev and Alicja Przywózka