- document
-
Vezio, P. (author), Bonaldi, M. (author), Borrielli, A. (author), Marino, F. (author), Morana, B. (author), Sarro, Pasqualina M (author), Serra, E. (author), Marin, F. (author)Thermal noise is a major obstacle to observing quantum behavior in macroscopic systems. To mitigate its effect, quantum optomechanical experiments are typically performed in a cryogenic environment. However, this condition represents a considerable complication in the transition from fundamental research to quantum technology applications. It...journal article 2023
- document
-
Low Noise Opto-Electro-Mechanical Modulator for RF-to-Optical Transduction in Quantum CommunicationsBonaldi, Michele (author), Borrielli, Antonio (author), Di Giuseppe, Giovanni (author), Malossi, Nicola (author), Morana, B. (author), Natali, Riccardo (author), Piergentili, Paolo (author), Sarro, Pasqualina M (author), Serra, E. (author), Vitali, David (author)In this work, we present an Opto-Electro-Mechanical Modulator (OEMM) for RF-to-optical transduction realized via an ultra-coherent nanomembrane resonator capacitively coupled to an rf injection circuit made of a microfabricated read-out able to improve the electro-optomechanical interaction. This device configuration can be embedded in a...journal article 2023
- document
-
Hagendoorn, Y. (author), Pandraud, G. (author), Vollebregt, S. (author), Morana, B. (author), Sarro, Pasqualina M (author), Steeneken, P.G. (author)Since the transfer process of graphene from a dedicated growth substrate to another substrate is prone to induce defects and contamination and can increase costs, there is a large interest in methods for growing graphene directly on silicon wafers. Here, we demonstrate the direct CVD growth of graphene on a SiO2 layer on a silicon wafer by...journal article 2022
- document
-
Borrielli, A. (author), Bonaldi, M. (author), Serra, E. (author), Sarro, Pasqualina M (author), Morana, B. (author)Feedback-based control techniques are useful tools in precision measurements as they allow us to actively shape the mechanical response of high quality factor oscillators used in force detection measurements. In this paper, we implement a feedback technique on a high-stress low-loss SiN membrane resonator, exploiting the charges trapped on...journal article 2021
- document
-
Serra, E. (author), Borrielli, Antonio (author), Marin, Francesco (author), Marino, Francesco (author), Malossi, Nicola (author), Morana, B. (author), Piergentili, Paolo (author), Prodi, Giovanni Andrea (author), Sarro, Pasqualina M (author)Micro- and nanomechanical resonators play a prominent part in many sensing and signal processing platforms due to their capability to pervasively couple with a wide variety of physical systems. Particularly relevant is their embedding in advanced optomechanical setups, which has recently pioneered optically cooled mechanical oscillators...journal article 2021
- document
-
Bonaldi, Michele (author), Borrielli, Antonio (author), Chowdhury, Avishek (author), Di Giuseppe, Gianni (author), Morana, B. (author), Piergentili, Paolo (author), Prodi, Giovanni A. (author), Sarro, Pasqualina M (author), Serra, E. (author)Abstract: Phenomenological models aiming to join gravity and quantum mechanics often predict effects that are potentially measurable in refined low-energy experiments. For instance, modified commutation relations between position and momentum, that account for a minimal scale length, yield a dynamics that can be codified in additional...journal article 2020
- document
-
Chowdhury, A. (author), Vezio, P. (author), Bonaldi, M. (author), Borrielli, A. (author), Marino, F. (author), Morana, B. (author), Prodi, G. A. (author), Sarro, Pasqualina M (author), Serra, E. (author), Marin, F. (author)Recent optomechanical experiments have observed nonclassical properties in macroscopic mechanical oscillators. A key indicator of such properties is the asymmetry in the strength of the motional sidebands produced in the probe electromagnetic field, which is originated by the noncommutativity between the oscillator ladder operators. Here we...journal article 2020
- document
-
Vezio, P. (author), Chowdhury, A. (author), Bonaldi, M. (author), Borrielli, Antonio (author), Marino, F. (author), Morana, B. (author), Prodi, G.A. (author), Sarro, Pasqualina M (author), Serra, E. (author), Marin, F. (author)We experimentally investigate a mechanical squeezed state realized in a parametrically modulated membrane resonator embedded in an optical cavity. We demonstrate that a quantum characteristic of the squeezed dynamics can be revealed and quantified even in a moderately warm oscillator, through the analysis of motional sidebands. We provide a...journal article 2020
- document
-
Chowdhury, A. (author), Vezio, P. (author), Bonaldi, M. (author), Borrielli, A. (author), Marino, F. (author), Morana, B. (author), Pandraud, G. (author), Sarro, Pasqualina M (author), Serra, E. (author)Cavity optomechanics has achieved the major breakthrough of the preparation and observation of macroscopic mechanical oscillators in non-classical states. The development of reliable indicators of the oscillator properties in these conditions is important also for applications to quantum technologies. We compare two procedures to infer the...journal article 2019
- document
-
Chowdhury, A. (author), Vezio, P. (author), Bonaldi, M. (author), Borrielli, A. (author), Marino, F. (author), Morana, B. (author), Pandraud, G. (author), Pontin, A. (author), Sarro, Pasqualina M (author)We describe a method to control the cavity detuning in optomechanics experiments. This helps accurate measurements of the asymmetry in the motional sidebands, that testify the quantum behavior of the oscillator and quantifies its occupation number.conference paper 2019
- document
-
Silvestri, C. (author), Riccio, Michele (author), Poelma, René H. (author), Jovic, A. (author), Morana, B. (author), Vollebregt, S. (author), Irace, Andrea (author), Zhang, Kouchi (author), Sarro, Pasqualina 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
- document
-
Serra, E. (author), Morana, B. (author), Borrielli, Antonio (author), Marin, Francesco (author), Pandraud, G. (author), Pontin, Antonio (author), Prodi, Giovanni Andrea (author), Sarro, Pasqualina M (author), Bonaldi, Michele (author)Optomechanical SiN nano-oscillators in high-finesse Fabry-Perot cavities can be used to investigate the interaction between mechanical and optical degree of freedom for ultra-sensitive metrology and fundamental quantum mechanical studies. In this paper, we present a nano-oscillator made of a high-stress round-shaped SiN membrane with an...journal article 2018
- document
-
Bui, T.H. (author), Nguyen, V.C. (author), Vollebregt, S. (author), Morana, B. (author), van Zeijl, H.W. (author), Chu Duc, Trinh (author), Sarro, Pasqualina 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
- document
-
Bui, T.H. (author), Morana, B. (author), Akhnoukh, A.B. (author), Chu Duc, Trinh (author), Sarro, Pasqualina M (author)A surface-acoustic-mode aluminum nitride (AlN) transducer is utilized to determine the type of liquid dropped on the propagation path. It is based on tracking the shrinking droplet radius and observing stagnant liquid molecules during and after the liquid evaporation process. The device configuration is suitable to test small amounts of...journal article 2017
- document
-
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
- document
-
Thomas, S. (author), Jovic, A. (author), Morana, B. (author), Buja, F. (author), Gkouzou, A. (author), Pandraud, G. (author), Sarro, Pasqualina M (author)In this paper we present the characterization of the coefficient of thermal expansion (CTE) of in-situ doped polycrystalline SiC thin films, obtained by low pressure chemical vapor deposition (LPCVD). The material is characterized using V-beam actuators on which the temperature coefficient of resistance (TCR) and the in-plane displacement...journal article 2016
- document
-
Serra, E. (author), Bawaj, M. (author), Borrielli, A. (author), Di Giuseppe, G. (author), Forte, S. (author), Kralj, N. (author), Malossi, N. (author), Marconi, L. (author), Marin, F. (author), Marino, F. (author), Morana, B. (author), Natali, R. (author), Pandraud, G. (author), Pontin, A. (author), Prodi, G.A. (author), Rossi, M. (author), Sarro, Pasqualina M (author), Vitali, D. (author), Bonaldi, M. (author)In view of the integration of membrane resonators with more complex MEMS structures, we developed a general fabrication procedure for circular shape SiN<sub><i>x</i></sub> membranes using Deep Reactive Ion Etching (DRIE). Large area and high-stress SiN<sub><i>x</i></sub> membranes were fabricated and used as optomechanical resonators in a...journal article 2016
- document
-
Vendelbo, S.B. (author), Creemer, J.F. (author), Helveg, S. (author), Morana, B. (author), Mele, L. (author), Molenbroek, A.M. (author), Sarro, P.M. (author), Zandbergen, H.W. (author), Kooyman, P.J. (author)Extended abstract of a paper presented at Microscopy and Microanalysis 2011 in Nashville, Tennessee, USA, August 7–August 11, 2011.journal article 2011
- document
-
Mele, L. (author), Santagata, F. (author), Panraud, G. (author), Morana, B. (author), Tichelaar, F.D. (author), Creemer, J.F. (author), Sarro, P.M. (author)This paper presents a new process for the fabrication of MEMS-based nanoreactors for in situ atomic-scale imaging of nanoparticles under relevant industrial conditions. The fabrication of the device is completed fully at wafer level in an ISO 5 clean room and it is based on silicon fusion bonding and thin film encapsulation for sealed lateral...journal article 2010