Risultati di ricerca
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G. Pennelli, S. Elyamny, E.Dimaggio, "Thermal conductivity of silicon nanowire forests" Nanotechnology , October 2018 doi.org/10.1088/1361-6528/aae5b6
A large amount of parallel silicon nanowires, placed perpendicularly to a silicon substrate (silicon nanowire forests), has been contacted and assembled in order to fabricate legs of a thermoelectric generator. This paper reports the measurement of the...
https://phd.dii.unipi.it/pubblicazioni/item/2297-g-pennelli,-s-elyamny,-e-dimaggio,-thermal-conductivity-of-silicon-nanowire-forests-nanotechnology-,-october-2018-doi-org-10-1088-1361-6528-aae5b6.html -
E.Dimaggio, D.Narducci, G.Pennelli, "Fabrication of silicon nanowire forests for thermoelectric applications by Metal Assisted Chemical Etching", Journal of Materials Engineering and Performance, September 2018, doi.org/10.1007/s11665-018-3605-2
Silicon nanowires, whose thermal conductivity is strongly reduced with respect to that of the bulk silicon, are very promising for high-efficient thermoelectric conversion. This work focuses on the development of a technique for the fabrication of...
https://phd.dii.unipi.it/pubblicazioni/item/2296-e-dimaggio,-d-narducci,-g-pennelli,-fabrication-of-silicon-nanowire-forests-for-thermoelectric-applications-by-metal-assisted-chemical-etching-,-journal-of-materials-engineering-and-performance,-september-2018,-doi-org-10-1007-s11665-018-3605-2.html -
G. Pennelli, E. Dimaggio, M. Macucci, "Thermal Conductivity Reduction in Rough Silicon Nanomembranes", IEEE Transactions on Nanotechnology 17 (3), 500, March 2018
Nanostructured silicon is a promising material for thermoelectric conversion because the thermal conductivity in silicon nanostructures can be strongly reduced with respect to that of bulk materials. We present thermal conductivity measurements,...
https://phd.dii.unipi.it/pubblicazioni/item/2295-g-pennelli,-e-dimaggio,-m-macucci,-thermal-conductivity-reduction-in-rough-silicon-nanomembranes-,-ieee-transactions-on-nanotechnology-17-3-,-500,-march-2018.html -
E. Dimaggio, G. Pennelli, "Potentialities of silicon nanowire forests for thermoelectric generation" Nanotechnology 29, 135401, February 2018
Silicon is a material with very good thermoelectric properties, with regard to Seebeck coefficient and electrical conductivity. Low thermal conductivities, and hence high thermal to electrical conversion efficiencies, can be achieved in nanostructures,...
https://phd.dii.unipi.it/pubblicazioni/item/2294-e-dimaggio,-g-pennelli,-potentialities-of-silicon-nanowire-forests-for-thermoelectric-generation-nanotechnology-29,-135401,-february-2018.html -
G. Pennelli, E. Dimaggio, M. Macucci, Note: Improvement of the 3ω thermal conductivity measurement technique for its application at the nanoscale, Review of Scientific Instru-ments, 89, 016104, January 2018
Conventional techniques for thermal conductivity measurements can lead to unreliable results when applied to nanostructures because heaters and temperature sensors needed for the measurement cannot have a negligible size and therefore perturb the...
https://phd.dii.unipi.it/pubblicazioni/item/2293-g-pennelli,-e-dimaggio,-m-macucci,-note-improvement-of-the-3ω-thermal-conductivity-measurement-technique-for-its-application-at-the-nanoscale,-review-of-scientific-instru-ments,-89,-016104,-january-2018.html -
Pennelli G., Dimaggio E., Macucci M., “Fabrication Techniques for Thermoelectric Devices Based on Nanostructured Silicon”, Journal of Nanoscience and Nanotechnology 17, 1623, July 2017
We discuss processes for the fabrication of devices for thermoelectric generation, based on silicon nanostructures. The main issue that we address is the design and development of fabrication processes for devices exploiting a large number of...
https://phd.dii.unipi.it/pubblicazioni/item/2292-pennelli-g-,-dimaggio-e-,-macucci-m-,-“fabrication-techniques-for-thermoelectric-devices-based-on-nanostructured-silicon”,-journal-of-nanoscience-and-nanotechnology-17,-1623,-july-2017.html -
E.Dimaggio, G.Pennelli: "Reliable fabrication of metal contacts on silicon nanowire forests", Nano Letters 16.7 (2016): 4348-4354.
This paper shows a technique for the fabrication of an electrical (and thermal) contact on the top ends of a large number of vertical silicon nanowires, which are fabricated perpendicularly to a silicon wafer ( silicon nanowire forest). The technique is...
https://phd.dii.unipi.it/pubblicazioni/item/1224-dimaggio,-elisabetta,-and-giovanni-pennelli-reliable-fabrication-of-metal-contacts-on-silicon-nanowire-forests-nano-letters-16-7-2016-4348-4354.html
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