Searched for: author%3A%22Dolleman%2C+R.J.%22
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Steeneken, P.G. (author), Dolleman, R.J. (author), Davidovikj, D. (author), Alijani, F. (author), van der Zant, H.S.J. (author)
The dynamics of suspended two-dimensional (2D) materials has received increasing attention during the last decade, yielding new techniques to study and interpret the physics that governs the motion of atomically thin layers. This has led to insights into the role of thermodynamic and nonlinear effects as well as the mechanisms that govern...
review 2021
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Dolleman, R.J. (author), Chakraborty, Debadi (author), Ladiges, Daniel R. (author), van der Zant, H.S.J. (author), Sader, John E. (author), Steeneken, P.G. (author)
The resonance frequency of membranes depends on the gas pressure due to the squeeze-film effect, induced by the compression of a thin gas film that is trapped underneath the resonator by the high-frequency motion. This effect is particularly large in low-mass graphene membranes, which makes them promising candidates for pressure-sensing...
journal article 2021
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Dolleman, R.J. (author), Katan, A.J. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
Semi-permeable membranes are important elements in water purification and energy generation applications, for which the atomic thickness and strength of graphene can enhance efficiency and permeation rate while maintaining good selectivity. Here, we show that an osmotic pressure difference forms across a suspended graphene membrane as a...
journal article 2021
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Romijn, J. (author), Dolleman, R.J. (author), Singh, M. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author), Sarro, Pasqualina M (author), Vollebregt, S. (author)
The operating principle of Pirani pressure sensors is based on the pressure dependence of a suspended strip's electrical conductivity, caused by the thermal conductance of the surrounding gas which changes the Joule heating of the strip. To realize such sensors, not only materials with high temperature dependent electrical conductivity are...
journal article 2021
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Dolleman, R.J. (author), Blanter, Y.M. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author), Verbiest, G.J. (author)
Recent experiments have shown surprisingly large thermal time constants in suspended graphene ranging from 10 to 100 ns in drums with a diameter ranging from 2 to 7 μm. The large time constants and their scaling with diameter points toward a thermal resistance at the edge of the drum. However, an explanation of the microscopic origin of this...
journal article 2020
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Dolleman, R.J. (author), Verbiest, G.J. (author), Blanter, Y.M. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
Recent theory has predicted large temperature differences between the in-plane [longitudinal (LA) and transverse (TA)] and out-of-plane [flexural (ZA)] acoustic phonon baths in locally heated suspended graphene. To verify these predictions, and their implications for understanding the nonequilibrium thermodynamics of two-dimensional (2D)...
journal article 2020
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Roslon, I.E. (author), Dolleman, R.J. (author), Licona, H. (author), Lee, M. (author), Siskins, M. (author), Lebius, H. (author), Madauß, L. (author), Schleberger, M. (author), Alijani, F. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
Porous, atomically thin graphene membranes have interesting properties for filtration and sieving applications. Here, graphene membranes are used to pump gases through nanopores using optothermal forces, enabling the study of gas flow through nanopores at frequencies above 100 kHz. At these frequencies, the motion of graphene is closely...
journal article 2020
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Lemme, Max C. (author), Wagner, Stefan (author), Lee, Kangho (author), Fan, Xuge (author), Verbiest, G.J. (author), Wittmann, Sebastian (author), Lukas, Sebastian (author), Dolleman, R.J. (author), Niklaus, Frank (author), van der Zant, H.S.J. (author), Duesberg, Georg S. (author), Steeneken, P.G. (author)
The unique properties and atomic thickness of two-dimensional (2D) materials enable smaller and better nanoelectromechanical sensors with novel functionalities. During the last decade, many studies have successfully shown the feasibility of using suspended membranes of 2D materials in pressure sensors, microphones, accelerometers, and mass...
review 2020
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Roslon, I.E. (author), Dolleman, R.J. (author), Solera Licona, Hugo (author), Lee, M. (author), Siskins, M. (author), Madauss, L. (author), Schleberger, M. (author), Alijani, F. (author), Steeneken, P.G. (author)
poster 2019
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Frota Sartori, A. (author), Belardinelli, P. (author), Dolleman, R.J. (author), Steeneken, P.G. (author), Ghatkesar, M.K. (author), Buijnsters, J.G. (author)
Diamond is a highly desirable material for state-of-the-art micro-electromechanical (MEMS) devices, radio-frequency filters and mass sensors, due to its extreme properties and robustness. However, the fabrication/integration of diamond structures into Si-based components remain costly and complex. In this work, a lithography-free, low-cost...
journal article 2019
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Dolleman, R.J. (author), Belardinelli, P. (author), Houri, S. (author), van der Zant, H.S.J. (author), Alijani, F. (author), Steeneken, P.G. (author)
Stochastic switching between the two bistable states of a strongly driven mechanical resonator enables detection of weak signals based on probability distributions, in a manner that mimics biological systems. However, conventional silicon resonators at the microscale require a large amount of fluctuation power to achieve a switching rate in the...
journal article 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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Dolleman, R.J. (author)
Micro and nanomechanical sensors are indispensable in modern consumer electronics, automotive and medical industries. Gas pressure sensors are currently the most widespread membrane-based micromechanical sensors. By reducing their size, their unit costs and energy consumption drops, making them more attractive for integration in new applications...
doctoral thesis 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, Pasqualina 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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Dolleman, R.J. (author), Lloyd, David (author), Lee, M. (author), Scott Bunch, J. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
We measure the thermal time constants of suspended single-layer molybdenum disulfide drums by their thermomechanical response to a high-frequency modulated laser. From this measurement, the thermal diffusivity of single-layer MoS2 is found to be 1.14×10-5m2/s on average. Using a model for the thermal time constants and a model assuming...
journal article 2018
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Dolleman, R.J. (author), Houri, S. (author), Chandrashekar, A. (author), Alijani, F. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
In the field of nanomechanics, parametric excitations are of interest since they can greatly enhance sensing capabilities and eliminate cross-talk. Above a certain threshold of the parametric pump, the mechanical resonator can be brought into parametric resonance. Here we demonstrate parametric resonance of suspended single-layer graphene...
journal article 2018
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Dolleman, R.J. (author), Houri, S. (author), Davidovikj, D. (author), Cartamil Bueno, S.J. (author), Blanter, Y.M. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
The thermal response of graphene is expected to be extremely fast due to its low heat capacity and high thermal conductivity. In this work, the thermal response of suspended single-layer graphene membranes is investigated by characterization of their mechanical motion in response to a high-frequency modulated laser. A characteristic delay...
journal article 2017
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Vollebregt, S. (author), Dolleman, R.J. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author), Sarro, Pasqualina M (author)
We present suspended graphene pressure sensors fabricated using an innovative surface micro-machining process. The great advantage of this process is that the molybdenum (Mo) catalyst layer for multi-layer graphene chemical vapor deposition (CVD) is also used as a sacrificial layer to suspend the graphene. This method allows for accurate control...
conference paper 2017
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Dolleman, R.J. (author), Davidovikj, D. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
Contactless characterization of mechanical resonances using Fabry-Perot interferometry is a powerful tool to study the mechanical and dynamical properties of atomically thin membranes. However, amplitude calibration is often not performed or only possible by making assumptions on the device parameters such as its mass or the temperature. In...
journal article 2017
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Dolleman, R.J. (author), Cartamil Bueno, S.J. (author), van der Zant, H.S.J. (author), Steeneken, P.G. (author)
We show that graphene membranes that separate two gases at identical pressure are deflected by osmotic pressure. The osmotic pressure is a consequence of differences in gas permeation rates into a few-layer graphene enclosed cavity. The deflection of the membrane is detected by measuring the tension-induced resonance frequency with an...
journal article 2016
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