Searched for: author:"Vollebregt, S."
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Wardhana, Gandhika K (author), Serdijn, W.A. (author), Vollebregt, S. (author), Giagka, V. (author), Vollebregt, Sten (author)
Neural interface in the form of microelectrodes are used to monitor and treat spinal cord injury and other neurological disorders by the means of recording and stimulation. Despite of the apparent result of these electrical interventions, understanding of the mechanism behind neural stimulation is still inadequate. The use of optical monitoring...
abstract 2019
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Dolleman, R.J. (author), Hsu, Z. (author), Vollebregt, S. (author), Sader, John E. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author), Ghatkesar, M.K. (author)
Current wafer-scale fabrication methods for graphene-based electronics and sensors involve the transfer of single-layer graphene by a support polymer. This often leaves some polymer residue on the graphene, which can strongly impact its electronic, thermal, and mechanical resonance properties. To assess the cleanliness of graphene fabrication...
journal article 2019
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Ricciardella, F. (author), Vollebregt, S. (author), Kurganova, Evgenia (author), Giesbers, A.J.M. (author), Ahmadi, M. (author), Sarro, P.M. (author)
A method to grow multi layers graphene (MLG) just by thermal annealing in an inert atmosphere is reported. A molybdenum (Mo) catalyst layer is used in combination with a solid amorphous carbon (a-C) source on top or below the Mo layer. The formation of MLG directly on top of the catalyst substrate surface is confirmed by Raman spectroscopy,...
journal article 2019
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Ricciardella, F. (author), Polichetti, Tiziana (author), Vollebregt, S. (author), Alfano, Brigida (author), Massera, Ettore (author), Sarro, P.M. (author)
Limitations such as lack of detected stationary signal and slow signal recovery after detection currently affect graphene-based chemi-sensors operating at room temperature. In this work, we model the behavior of a sensor in a test chamber having limited volume and simulating the environmental conditions. From this model, we mathematically derive...
journal article 2019
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Silvestri, C. (author), Riccio, M (author), Poelma, René H. (author), Jovic, A. (author), Morana, B. (author), Vollebregt, S. (author), Irace, A (author), Zhang, G.Q. (author), Sarro, P.M. (author)
The high aspect ratio and the porous nature of spatially oriented forest-like carbon nanotube (CNT) structures represent a unique opportunity to engineer a novel class of nanoscale assemblies. By combining CNTs and conformal coatings, a 3D lightweight scaffold with tailored behavior can be achieved. The effect of nanoscale coatings, aluminum...
journal article 2018
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Huang, Z.Q. (author), Poelma, René H. (author), Vollebregt, S. (author), Koelink, M.H. (author), Boschman, E. (author), Kropf, R. (author), Gallouch, M. (author), Zhang, G.Q. (author)
This article shows the fabrication process and packaging of through polymer optical vias (TPOV). The TPOV enables encapsulation and packaging of silicon photonic systems using film assisted molding (FAM) and the creation of micron-sized through polymer optical vias. The optical vias are lithographically defined in thick film photo-resist (∼ 300...
conference paper 2018
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Kurganova, Evgenia (author), Giesbers, A.J.M. (author), Vollebregt, S. (author), Notenboom, Arnoud (author), Vles, David (author), Nasalevich, Maxim (author), van Zwol, Peter (author)
abstract 2018
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Vollebregt, S. (author), Giesbers, A.J.M. (author), Klootwijk, Johan (author)
journal article 2018
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Vollebregt, S. (author), Ricciardella, F. (author), Romijn, J. (author), Singh, M. (author), Shi, Shengtai (author), Sarro, P.M. (author)
abstract 2018
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Romijn, J. (author), Vollebregt, S. (author), Dolleman, R.J. (author), Singh, M. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author), Sarro, P.M. (author)
Worlds first graphene-based Pirani pressure sensor is presented. Due to the decreased area and low thickness, the graphene-based Pirani pressure sensor allows for low power applications down to 0.9 mW. Using an innovative, transfer-free process, suspended graphene beams are realized. This allows for up to 100x miniaturization of the pressure...
conference paper 2018
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Ricciardella, F. (author), Vollebregt, S. (author), Polichetti, T. (author), Miscuglio, Mario (author), Alfano, B. (author), Miglietta, Maria L. (author), Massera, E. (author), Di Francia, Girolamo (author), Sarro, P.M. (author)
The crystal structure of graphene flakes is expected to significantly affect their sensing properties. Here we report an experimental investigation on the crystalline structure of graphene aimed at exploring the effects on the gas sensing properties. The morphology of graphene, prepared via Chemical Vapor Deposition (CVD), Liquid Phase...
journal article 2017
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Schiattarella, Chiara (author), Vollebregt, S. (author), Polichetti, T. (author), Alfano, B. (author), Massera, E. (author), Miglietta, Maria L. (author), Di Francia, Girolamo (author), Sarro, P.M. (author)
The sp<sup>2</sup> carbon-based allotropes have been extensively exploited for the realization of gas sensors in the recent years because of their high conductivity and large specific surface area. A study on graphene that was synthetized by means of a novel transfer-free fabrication approach and is employed as sensing material is herein...
journal article 2017
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Ricciardella, F. (author), Vollebregt, S. (author), Polichetti, T. (author), Alfano, B. (author), Massera, E. (author), Sarro, P.M. (author)
<br/>In this work, we present an innovative method which enables to solve fundamental limitations affecting graphene-based chemi-sensors operating under environmental conditions, namely the lack of signal saturation and the scarce recovery after the detection step. The method, which exploits the differential current instead of the current itself...
conference paper 2017
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Yazdan Mehr, M. (author), Vollebregt, S. (author), van Driel, W.D. (author), Zhang, G.Q. (author)
A graphene monolayer has been successfully coated on one side of a bisphenol-A-polycarbonate (BPA-PC) plate, used as a substrate for remote phosphor applications in light-emitting diode (LED)-based products. Using a photoresist transferring method, graphene sheet has been coated on BPA-PC plates. The results show that this graphene monolayer...
journal article 2017
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Ricciardella, F. (author), Vollebregt, S. (author), Polichetti, T. (author), Alfano, B. (author), Massera, E. (author), Sarro, P.M. (author)
In this paper we report on gas sensors based on graphene grown by Chemical Vapor Deposition at 850 °C. Mo was used as catalyst for graphene nucleation. Resistors were directly designed on pre-patterned Mo using the transfer-free process we recently developed, thus avoiding films damage during the transfer to the target substrate. Devices...
conference paper 2017
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Ricciardella, F. (author), Vollebregt, S. (author), Polichetti, T. (author), Alfano, B. (author), Massera, E. (author), Sarro, P.M. (author)
abstract 2017
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Bui, T.H. (author), Vollebregt, S. (author), Morana, B. (author), van Zeijl, H.W. (author), Chu Duc, Trinh (author), Sarro, P.M. (author)
The effect of the contact angle and radius of a microsize droplet on the surface acoustic wave (SAW) response for microfluidic applications is reported. It is studied through the dynamic change of the droplet shape during the evaporation process. An aluminium nitride SAW device, operating at 125.7 MHz, is utilized to investigate the...
journal article 2017
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Li, X. (author), Wei, L. (author), Poelma, René H. (author), Vollebregt, S. (author), Wei, J. (author), Urbach, Paul (author), Sarro, P.M. (author), Zhang, G.Q. (author)
This paper presents a tuneable binary amplitude Fresnel lens produced by wafer-level microfabrication. The Fresnel lens is fabricated by encapsulating lithographically defined vertically aligned carbon nanotube (CNT) bundles inside a polydimethyl-siloxane (PDMS) layer. The composite lens material combines the excellent optical absorption...
journal article 2016
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Silvestri, C. (author), Riccio, M. (author), Poelma, R.H. (author), Morana, B. (author), Vollebregt, S. (author), Santagata, F. (author), Irace, A. (author), Zhang, G.Q. (author), Sarro, P.M. (author)
Thermal material properties play a fundamental role in the thermal management of microelectronic systems. The porous nature of carbon nanotube (CNT) arrays results in a very high surface area to volume ratio, which makes the material attractive for surface driven heat transfer mechanisms. Here, we report on the heat transfer performance of...
journal article 2016
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Ricciardella, F. (author), Vollebregt, S. (author), Polichetti, T. (author), Alfano, B. (author), Massera, E. (author), Sarro, P.M. (author)
The work herein presented investigates the behavior of graphene-based gas sensors realized by using an innovative way to prepare graphene. The sensing layer was directly grown by chemical vapor deposition on pre-patterned CMOS compatible Mo catalyst and then it was eased on the underlying SiO2 through a completely transfer-free process. Devices...
conference paper 2016
Searched for: author:"Vollebregt, S."
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