171 citations · 374 across the 19 of their papers we have counts for
20 papers
Relational GNS Fusion and an Idempotent Gauge-Gravity Fixed Point
G. J. Verbiest
We propose a relational noncommutative framework in which quantum kinematics, semiclassical geometry, internal gauge structure, and ultraviolet fixed-point behaviour arise as secto…
Mechanical Reinforcement of Graphene via Wrinkling
Hadi Arjmandi-Tash, Roshan Prasad, Hanqing Liu +3
Mechanical cantilevers are central to nanotechnology, with ultimate sensitivity achieved at the atomic limit, where low bending rigidity makes stability the fundamental challenge.…
Amorphous Silicon-Carbide Photonics for Ultrasound Imaging
R. Tufan Erdogan, Bruno Lopez-Rodriguez, Wouter J. Westerveld +4
Photonic ultrasound sensors offer unparalleled potential for improving spatial and temporal resolution in ultrasound imaging applications due to their size-independent noise figure…
Actuation and mapping of SAW-induced high-frequency wavefields on suspended graphene membranes
Hande N. Açıkgöz, Dong Hoon Shin, Inge C. van der Knijff +5
High frequency acoustic devices based on two-dimensional (2D) materials are unique platforms to design and manipulate the spatiotemporal response of acoustic waves for next-generat…
The graphene squeeze-film microphone
M. P. Abrahams, J. Martinez, P. G. Steeneken +1
Most microphones operate by detecting the sound-pressure induced motion of a membrane. In contrast, here we introduce a microphone that operates by monitoring the sound-pressure-in…
Tuning dissipation dilution in 2D material resonators by MEMS-induced tension
M. P. F. Wopereis, N. Bouman, S. Dutta +3
Resonators based on two-dimensional (2D) materials have exceptional properties for application as nanomechanical sensors, which allows them to operate at high frequencies with high…
Optomechanical methodology for characterizing the thermal properties of 2D materials
Hanqing Liu, Hatem Brahmi, Carla Boix-Constant +3
Heat transport in two-dimensions is fundamentally different from that in three dimensions. As a consequence, the thermal properties of 2D materials are of great interest, both from…
Quantifying stress distribution in ultra-large graphene drums through mode shape imaging
Ali Sarafraz, Hanqing Liu, Katarina Cvetanović +6
Suspended drums made of 2D materials hold potential for sensing applications. However, the industrialization of these applications is hindered by significant device-to-device varia…
Enhanced sensitivity and tunability of thermomechanical resonance near the buckling bifurcation
Hanqing Liu, Gabriele Baglioni, Carla B. Constant +3
The high susceptibility of ultrathin two-dimensional (2D) material resonators to force and temperature makes them ideal systems for sensing applications and exploring thermomechani…
Nanomechanical resonators fabricated by atomic layer deposition on suspended 2D materials
Hanqing Liu, Saravana B. Basuvalingam, Saurabh Lodha +4
Atomic layer deposition (ALD), a layer-by-layer controlled method to synthesize ultrathin materials, provides various merits over other techniques such as precise thickness control…
Dynamics of pressurized ultra-thin membranes
Ali Sarafraz, Arthur Givois, Irek Roslon +5
The resonance frequency of ultra-thin layered two-dimensional (2D) materials changes nonlinearly with the tension induced by the pressure from the surrounding gas. Although the dyn…
Ultra-sensitive graphene membranes for microphone applications
Gabriele Baglioni, Roberto Pezone, Sten Vollebregt +8
Microphones exploit the motion of suspended membranes to detect sound waves. Since the microphone performance can be improved by reducing the thickness and mass of its sensing memb…
Tension tuning of sound and heat transport in graphene
H. Liu, M. Lee, M. Šiškins +3
Heat transport by acoustic phonons in 2D materials is fundamentally different from that in 3D crystals because the out-of-plane phonons propagate in a unique way that strongly depe…
Self-sealing complex oxide resonators
Martin Lee, Martin Robin, Ruben Guis +9
Although 2D materials hold great potential for next-generation pressure sensors, recent studies revealed that gases permeate along the membrane-surface interface that is only weakl…
Optical absorption sensing with dual-spectrum silicon LEDs in SOI-CMOS technology
Satadal Dutta, Peter G. Steeneken, Gerard J. Verbiest
Silicon p-n junction diodes emit low-intensity, broad-spectrum light near 1120 nm in forward bias and between 400-900 nm in reverse bias (avalanche). For the first time, we experim…
Nanoelectromechanical Sensors based on Suspended 2D Materials
Max C. Lemme, Stefan Wagner, Kangho Lee +9
The unique properties and atomic thickness of two-dimensional (2D) materials enable smaller and better nanoelectromechanical sensors with novel functionalities. During the last dec…
Phonon Scattering at Kinks in Suspended Graphene
Robin J. Dolleman, Yaroslav M. Blanter, Herre S. J. van der Zant +2
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 microns. The la…
Nonequilibrium Thermodynamics of Acoustic Phonons in Suspended Graphene
Robin J. Dolleman, Gerard J. Verbiest, Yaroslav M. Blanter +2
Recent theory has predicted large temperature differences between the in-plane (LA and TA) and out-of-plane (ZA) acoustic phonon baths in locally-heated suspended graphene. To veri…
Detecting Ultrasound Vibrations by Graphene Resonators
G. J. Verbiest, J. N. Kirchhof, J. Sonntag +3
Ultrasound detection is one of the most important nondestructive subsurface characterization tools of materials, whose goal is to laterally resolve the subsurface structure with na…
Tailoring mechanically-tunable strain fields in graphene
M. Goldsche, J. Sonntag, T. Khodkov +7
There are a number of theoretical proposals based on strain engineering of graphene and other two-dimensional materials, however purely mechanical control of strain fields in these…