Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Laboratory investigations of sub-meter resolution telescope with segmented aperture dedicated to CubeSat platform

Knapkiewicz Paweł, Janisz Tymon, Charytoniuk Grzegorz, Partyka Michał, Pozniak Tomasz, Stefanow Damian, Chołodowski Jakub

Opto-Electronics Review

2024

Vol. 32, No. 2

art. no. e150604

In current CubeSat observation satellites, the main design constraint is the available space. Standards dictating the unit dimensions of the payload severely restrict the maximum aperture and focal length of the optical instrument. In this paper, the authors present the results of work to produce a novel DeploScope optical system for a CubeSat-type observation satellite with a segmented aperture of the primary mirror deployed in space. The telescope is designed for Earth observation and is expected to find its application in the military, precision agriculture or environmental disaster prevention. The work includes a detailed analysis of the segment aperture effect on image repeatability for different numbers of main mirror segments. Based on it, the optimal configuration of the optical model of the telescope with an aperture of 188.5 mm and a focal length of 1100 mm was selected. Based on this analysis, a so-called laboratory version of the telescope was built, providing the possibility of free correction of each segment of the primary mirror while maintaining a solid stable base for other components of the module. Imaging tests were carried out on the laboratory version of the instrument and the system was optimized for a version suitable for implementation in the payload structure of the microsatellite.

Towards microfluidics for mycology – material and technological studies on LOCs as new tools ensuring investigation of microscopic fungi and soil organisms

Podwin Agnieszka, Janisz Tymon, Patejuk Katarzyna, Szyszka Piotr, Walczak Rafał, Dziuban Jan

Bulletin of the Polish Academy of Sciences. Technical Sciences

2021

Vol. 69, nr 1

art. no. e136212

This paper presents material and technological studies on lab-on-chip (LOC) devices as a first step towards biocompatible and reliable research on microscopic fungi and soil organisms on a microscale. This approach is intended to respond to the growing need for environmental control and protection, by means of modern, miniaturized, portable and dependable microfluidics instrumentation. The authors have presented herein long-term, successful cultivation of different fungi representatives (with emphasis put on Cladosporium macrocarpum) in specially fabricated all-glass LOCs. Notable differences were noted in the development of these creatures on polymer, polydimethylosiloxane (PDMS) cultivation substrates, revealing the uncommon morphological character of the fungi mycelium. The utility of all-glass LOCs was verified for other fungi representatives as well – Fusarium culmorum and Pencilium expansum, showing technical correspondence and biocompatibility of the devices. On that basis, other future applications of the solution are possible, covering, e.g. investigation of additional, environmentally relevant fungi species. Further development of the LOC instrumentation is also taken into consideration, which could be used for cultivation of other soil organisms and study of their mutual relationships within the integrated microfluidic device.