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Study of high-strength and high-conductivity Cu-Sn-Fe alloys

100%

Zhang J. , Cui X. , Ma J. , Wang Y.

tom Vol. 34, No. 1

142--147

Cu-Sn-Fe alloys with different compositions were developed by casting, normalizing treatment, cold roll and subsequent annealing treatment. The results showed that the tensile strength and resistivity of the Cu-xSn-xFe alloys (where x represents wt.%) improved with increasing the content of Sn and Fe. Compared with the as-cast alloys, the resistivity and tensile strength of the Cu-xSn-xFe alloys after normalizing and cold rolling treatment increased. In addition, the resistivity and mechanical properties of the alloys after the annealing treatment were improved significantly. Finally, a conclusion could be drawn that the annealed Cu-2Sn-5Fe alloy had good mechanical properties and resistivity, and the values of the tensile strength, mechanical elongation and resistivity reached 552 MPa, 32 % and 1.92 μΩ cm, respectively.

Study on Motion Sensing Using Textile Electrodes-Focusing on the Application of PANI Conductive Material

100%

Wang C. , Song H.

Fibres & Textiles in Eastern Europe

2024

tom Vol. 32, no. 2

1--16

This study investigates the application of textile electrodes using PANI (Polyaniline) conductive material for motion sensing, specifically aimed at motion monitoring for the elderly. By depositing a PANI conductive layer on the base of warp-knitted fabric through in-situ polymerization and plasma treatment, a PCCWKF (Polyaniline Coated Conductive Warp-Knitted Fabric) with enhanced electrical conductivity and mechanical flexibility was developed. The research optimized the electrical resistivity and durability of PCCWKF by incorporating Polyvinyl Alcohol (PVA) as a toughening agent, improving the adhesion of the PANI conductive layer to the textile substrate. The sensor’s efficacy in accurately recording and monitoring motion amplitude and frequency in real-time was demonstrated through its application in smart clothing, focusing on respiratory, elbow, and knee motion monitoring. This study holds significant implications for the advancement of wearable technology and smart textiles in the health monitoring of the elderly.

Zastosowania wybranych metali w przyrządach do monitorowania kultur in vitro

63%

Zarzeczny D.

Przegląd Elektrotechniczny

2022

tom R. 98, nr 2

79--82

W pracy opisany został problem związany z wysokimi nakładami koniecznymi do prowadzenia badań medyczno- -biologicznych. Zaproponowano możliwość zastosowania niestandardowych rozwiązań poprawiających efektywność kosztową prowadzenia eksperymentów in vitro metodą pomiaru impedancji elektrycznej. Opisano opracowane matryce z elektrodami wykonanych z różnych materiałów do pomiaru impedancji elektrycznej komórek in vitro. Pomiary przeprowadzono wykorzystując komórki mysich fibroblastów L929 z użyciem płytek z elektrodami z Cu, Ti, NiCr i Ni. Posłużyły one do oceny wpływu danego materiału na hodowlę komórek i próbę określenia możliwości ich zastosowania w eksperymentach medyczno-biologicznych.

The paper describes the problem related to the high costs necessary to conduct medical and biological research. The possibility of using non-standard solutions improving the cost-effectiveness of conducting in vitro experiments using the electrical impedance measurement method was proposed. The developed matrices with electrodes made of various materials for the in vitro measurement of cell electrical impedance are described. Measurements were performed using mouse L929 fibroblast cells using plates with Cu, Ti, NiCr and Ni electrodes. They were used to assess the effect of a given material on cell culture and to attempt to determine the possibility of their use in medical and biological experiments.