Draft:RVactuators
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- File:Symbol opinion vote.svg Comment: Please note that Wikipedia is not a reliable source and should be removed. MCE89 (talk) 19:25, 15 December 2025 (UTC)
RVactuators, s.r.o. is a research and development company based in Czech Republic that specializes in manufacturing and customisation of MicroActuators based on Shape Memory Effect in Heusler MicroWires.[1]
RVactuators is a sister company of RVmagnetics active in passive contactless MicroWire Sensors.
Scope of the company's work lays in prototyping and customisation of the Heusler MicroWires to meet the requirements of the customers. The main focus of the company is on MicroWire actuating technologies that can be used where Size, Weight and Power (SwaP design principle) is of essence.
History
[edit | edit source]The company was founded in 2024[2] by Rastislav Varga, former Member of the General Council at the European Magnetism Association [3] and Member of the Technical Committee of IEEE Magnetics Society [4] and Member of European Physical Society (EPS) [5]
Contracts
[edit | edit source]RVactuators has been awarded Early Technology Development contract in November 2025 by ESA (European Space Agency).[6]
Company has also applied for grant DEEP TECH,[7] provided under The Operational Program Technologies and Application for Competitiveness (OP TAC) under Managing authority of Ministry of Industry and Trade of Czech Republic.[8]
Shape Memory Actuation Technology
[edit | edit source]Shape memory actuation refers to the use of materials capable of reversible deformation in response to external stimuli, such as temperature changes or electric current. These materials are employed in various precision-movement applications, where their ability to undergo controlled shape changes enables simplified system architectures and increased operational reliability.
Glass-coated microwires with different valence electron concentrations (e/a) have been investigated for their potential to exhibit structural transformations within a temperature range of 100 K to 400 K.[9]
Magnetic properties of such microwires can be tuned through external magnetic excitation. In particular, the variation of magnetic permeability has been demonstrated to reach up to 1600% [10] when an appropriately selected amplitude of excitation magnetic field is applied.
NiFeGa microwires represent another class of materials relevant to shape memory actuation. These microwires exhibit a monocrystalline structure along their entire length, reported to extend up to 1 km[11]. The monocrystalline nature is associated with reversible shape memory straining of up to 12%, achieved without the need for thermal treatment or training processes.[12]
References
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