141 citations · 368 across the 18 of their papers we have counts for
19 papers
Fluctuation-Controlled Asymmetric Kinetics in Metal-Insulator Transitions
Tapas Bar, David Pesquera, Timm Swoboda +5
We report asymmetric kinetics in thermally driven metal-insulator transitions (MITs) in 1T-TaS. Using combined transport, calorimetric, and Raman measurements, we show that the…
From Amorphous to Amorphous-Crystalline Mixed-Phase Boron Nitride: Evolution of the Thermal and Elastic Properties
Jiaqi Yang, Thomas Souvignet, Onurcan Kaya +11
Amorphous boron nitride (aBN) is a promising dielectric and protective coating, yet its nanoscale heat dissipation and elastic response remain poorly quantified. Here we synthesize…
Evanescent absorption spectroscopy of transition metal dichalcogenide materials using guided photoluminescence in SiN photonic waveguides
Victor Gonzalez-Morote, Marianna Sledzinska, Arkadiusz P. Gertych +3
On-chip integration of two-dimensional transition metal dichalcogenides (TMDs) with photonic waveguides underpins a growing class of compact optoelectronic and sensing devices, who…
Thermal insulation and heat guiding using nanopatterned MoS2
Peng Xiao, Alexandros El Sachat, Emigdio Chávez Angel +5
In the modern electronics overheating is one of the major reasons for device failure. Overheating causes irreversible damage to circuit components and can also lead to fire, explos…
Excitation and detection of acoustic phonons in nanoscale systems
Ryan C Ng, Alexandros El Sachat, Francisco Cespedes +8
Phonons play a key role in the physical properties of materials, and have long been a topic of study in physics. While the effects of phonons had historically been considered to be…
Phonon dynamics and thermal conductivity of PtSe2 thin films: Impact of crystallinity and film thickness on heat dissipation
Alexandros El Sachat, Peng Xiao, Davide Donadio +11
We present a comparative investigation of the influence of crystallinity and film thickness on the acoustic and thermal properties of 2D layered PtSe2 thin films of varying thickne…
Unraveling heat transport and dissipation in suspended MoSe crystals from bulk to monolayer
D. Saleta Reig, S. Varghese, R. Farris +14
Understanding thermal transport in layered transition metal dichalcogenide (TMD) crystals is crucial for a myriad of applications exploiting these materials. Despite significant ef…
Heat dissipation in few-layer MoS2 and MoS2/hBN heterostructure
Alois Arrighi, Elena del Corro, Daniel Navarro Urrios +8
State-of-the-art fabrication and characterization techniques have been employed to measure the thermal conductivity of suspended, single-crystalline MoS2 and MoS2/hBN heterostructu…
Optomechanical crystals for spatial sensing of submicron sized analytes
D. Navarro-Urrios, E. Kang, P. Xiao +7
Optomechanical crystal cavities have rich perspectives for detecting and indirectly analysing biological particles, such as proteins, bacteria and viruses. In this work we demonstr…
Thermal transport in nanoporous holey silicon membranes investigated with optically-induced transient thermal gratings
Ryan A. Duncan, Giuseppe Romano, Marianna Sledzinska +5
In this study, we use the transient thermal grating optical technique \textemdash a non-contact, laser-based thermal metrology technique with intrinsically high accuracy \textemdas…
Fracturing of polycrystalline MoS nanofilms
M. Sledzinska, G. Jumbert, M. Placidi +4
The possibility of tailoring the critical strain of 2D materials will be crucial for the fabrication of flexible devices. In this paper, the fracture in polycrystalline MoS2 films…
Thermal conductivity of disordered porous membranes
Marianna Sledzinska, Bartlomiej Graczykowski, Francesc Alzina +4
We report measurements and Monte Carlo simulations of thermal conductivity of porous 100nm- thick silicon membranes, in which size, shape and position of the pores were varied rand…
Mechanical oscillations in lasing microspheres
A. Toncelli, N. E. Capuj, B. Garrido +4
We investigate the feasibility of activating coherent mechanical oscillations in lasing microspheres by modulating the laser emission at a mechanical eigenfrequency. To this aim, 1…
Record Low Thermal Conductivity of Polycrystalline MoS2 films: Tuning the Thermal Conductivity by Grain Orientation
M. Sledzinska, R. Quey, B. Mortazavi +8
We report a record low thermal conductivity in polycrystalline MoS2 obtained by varying grain sizes and orientations in ultrathin films. By optimizing the sulphurisation parameters…
Thermal transport in suspended silicon membranes measured by laser-induced transient gratings
Alejandro Vega-Flick, Ryan A. Duncan, Jeffrey K. Eliason +12
Studying thermal transport at the nanoscale poses formidable experimental challenges due both to the physics of the measurement process and to the issues of accuracy and reproducib…
Nonlinear dynamics and chaos in an optomechanical beam
D. Navarro-Urrios, N. E. Capuj, M. F. Colombano +6
Optical non-linearities, such as thermo-optic effects and free-carrier-dispersion, are often considered as undesired effects in silicon-based resonators and, more specifically, opt…
Thermal conductivity of MoS2 polycrystalline nanosheets
M. Sledzinska, B. Graczykowski, M. Placidi +8
We report a technique for transferring large areas of the CVD-grown, few-layer MoS2 from the original substrate to another arbitrary substrate and onto holey substrates, in order t…
Two-Dimensional Phononic Crystals: Disorder Matters
Markus R. Wagner, Bartlomiej Graczykowski, Juan Sebastian Reparaz +4
The design and fabrication of phononic crystals (PnCs) hold the key to control the propagation of heat and sound at the nanoscale. However, there is a lack of experimental studies…
High-frequency nanotube mechanical resonators
J. Chaste, M. Sledzinska, M. Zdrojek +2
We report on a simple method to fabricate high-frequency nanotube mechanical resonators reproducibly. We measure resonance frequencies as high as 4.2 GHz for the fundamental eigenm…