Solid Propellant Micro Rockets - Towards a New Type of Power MEMS

Larangot, B.; Rossi, Carole; Camps, Thierry; Bertholds, A.; Pham, P. Q.; Briand, D.; Rooij, N. F. de; Puig-Vidal, M.; Miribel-Català, Pere Ll.; Montanu, E.; Lopez, Ericsson; Samitier, J.

doi:10.2514/6.2002-5756

Cited by 22 publications

(28 citation statements)

References 3 publications

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“…Due to the major role played by the igniter in the device functioning, special attention should be paid to its design and to its characteristics in order to achieve a successful ignition. Joule effect microheaters as microigniters have been reported in the literature: polysilicon microheaters thermally insulated from the substrate by means of a thick dielectric membrane [2], polysilicon heaters on a thin dielectric membrane and fabricated by bulk micromachining [11,15], platinum/titanium microheaters on a diaphragm [3] or nickel chromium aluminum copper wire inserted in a slot of the microthruster [4]. All these methods present some drawbacks.…”

Section: E-mail Address: Danickbriand@uninech (D Briand)mentioning

confidence: 99%

“…In [2], the power consumption is relatively high to an insufficient thermal insulation of the igniter from the substrate. In the case of igniters on membranes, lowpower is ensure but filling of the igniter with propellant becomes problematic, ignition success rate is an issue and debris are create due to the breaking of the membrane during the combustion [3,11]. Despite that polysilicon exhibits a long term drift of its electrical resistance at relatively high temperatures [21], it remains a suitable heating material for the micropropulsion application due to the short time required to ignite the solid propellants.…”

Section: E-mail Address: Danickbriand@uninech (D Briand)mentioning

confidence: 99%

“…The millimeter-scale already developed device and on which this work is based [11] consisted in a stack of four wafers ( Fig. 1): the microigniter, which is a polysilicon microheater thermally isolated on a dielectric membrane and fabricated by bulk micromachining, a chamber (1.5 mm × 1.5 mm) filled with the solid propellant and closed by a seal, and a nozzle through which the combustion gases expand.…”

Section: Microthruster Designmentioning

confidence: 99%

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Reliability of freestanding polysilicon microheaters to be used as igniters in solid propellant microthrusters

Briand

Pham

Rooij

2007

Sensors and Actuators A: Physical

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This paper presents the design, fabrication and characterisation of surface micromachined polysilicon microheaters to be used as microigniters for micropropulsion applications. The microigniters are heated up by Joule effect and the thermal losses through the substrate are minimised by suspending the microheaters above the substrate. The developed process was compatible with the integration of the nozzle part of the microthruster. The electrical, thermal and mechanical characteristics of the microheaters were studied with the aim of evaluating their reliability. Temperatures up to 470 • C could be reached with an electrical power of 45 mW/beam. The current-voltage relation followed a linear characteristic at low power; at high bias voltages, a drift of the electrical resistance was measured after a few I-V cycles at power higher than 40 mW/beam. The elastic and plastic deformation threshold of the microheaters in operation and their maximum deflection before rupture were measured. The microheaters could dissipate relatively high constant powers for a few minutes to hours. The fabricated microheaters are promising candidates for the ignition of solid propellant microthrusters.

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Section: E-mail Address: Danickbriand@uninech (D Briand)mentioning

confidence: 99%

Section: E-mail Address: Danickbriand@uninech (D Briand)mentioning

confidence: 99%

Section: Microthruster Designmentioning

confidence: 99%

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Reliability of freestanding polysilicon microheaters to be used as igniters in solid propellant microthrusters

Briand

Pham

Rooij

2007

Sensors and Actuators A: Physical

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“…Moreover the sensing or actuating part of some of these devices is thermally induced. Examples of such devices are thermo-pneumatic micropumps [1], microthrusters [2], microhotplate gas sensors [3], or thermopile based IR sensors [4].…”

Section: Introductionmentioning

confidence: 99%

“…In some cases [2], optimal performance needs a real-time control of the input according to output magnitudes. In such a case, a feed-back loop with a model description of the system must be solved to predict the required new input values.…”

Section: Introductionmentioning

confidence: 99%

Comparison of model order reduction methodologies for thermal problems

Salleras

Bechtold²,

Fonseca³

et al.

EuroSimE 2005. Proceedings of the 6th International Conference on Thermal, Mechanial and Multi-Physics Simulation and Experimen

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In this paper two different methodologies for model order reduction for thermal problems are analyzed. These methodologies (Arnoldi algorithm and Proper Orthogonal Decomposition) face the problem from two different points of view. The first, deals with systemn matrices obtained from the space discretization of the system of partial differential equations (e.g. finite element method), which describe the relationship between the different nodes of the system, while Proper Orthogonal Decomposition deals with the input-output information of the system. Both methodologies have its own advantages and inconvenients, which will be discussed for a particular MEMS device.

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DNA Nanoengineering and DNA ‐Driven Nanoparticle Assembly

Estève¹,

Rossi²

2021

Biological Soft Matter

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Table des matières 1 Introduction ____________________________________________________________ 1 2 From the DNA molecule to nanotechnologies _________________________________ 4 3 DNA nanostructures: from Holliday junctions to 3D origami _____________________ 5 4 DNA-directed assembly of particles: from concepts to the realization of ordered assemblies _________________________________________________________________ 8 4.1 DNA/nanoparticle assembly: primary functionalization strategies ______________ 9 4.2 Towards high-order crystalline structures ________________________________ 11 4.3 Crystallization of heterogeneous systems _________________________________ 13 4.4 DNA/nanoparticle assembly: applications ________________________________ 15 5 Nano-engineering of DNA self-assembled Al/CuO nanothermite _________________ 16 5.1 Fundaments and characterization of DNA/surface chemistry and grafting strategies 17 5.1.1 DNA/alumina interaction evaluation through infrared spectroscopy and first principles calculations ___________________________________________________ 18 5.1.2 Functionalization protocol and colloidal characterization _________________ 20 5.1.3 Quantification of streptavidin and DNA surface densities __________________ 21 5.2 Kinetics of DNA-directed assembly of Al and CuO nanoparticles ______________ 23 5.2.1 Design and impact of the DNA coding sequence _________________________ 24 5.3 Structural and energetic properties of the Al/CuO bionanocomposite __________ 26 6 Conclusion ____________________________________________________________ 29

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Solid Propellant Micro Rockets - Towards a New Type of Power MEMS

Cited by 22 publications

References 3 publications

Reliability of freestanding polysilicon microheaters to be used as igniters in solid propellant microthrusters

Reliability of freestanding polysilicon microheaters to be used as igniters in solid propellant microthrusters

Comparison of model order reduction methodologies for thermal problems

DNA Nanoengineering and DNA ‐Driven Nanoparticle Assembly

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