11 citations · 29 across the 10 of their papers we have counts for
12 papers
1/f frequency-noise reduction in nanomechanical resonators by dissipation dilution
Kostas Kanellopulos, Silvan Schmid
The frequency noise of a resonant nanomechanical sensor is well understood down to its thermomechanical limit, but the longest useful averaging time is set by a flicker, or ,…
Reduction of intrinsic losses in nanomechanical silicon nitride resonators through thermal treatment in ultrahigh vacuum
Nicola Cavalleri, Ariane Giesriegl, Robert G. West +7
Since the discovery of dissipation dilution, silicon nitride (SiN) nanomechanical resonators have set the benchmark for ultracoherent mechanical systems, with geometry and strain e…
Position-Dependent Calibration and Frequency Stability in On-Axis Optical Transduction of Vertical InP Nanowire Resonators
Robert G. West, Kostas Kanellopulos, Lukas Hrachowina +2
We present a quantitative framework for on-axis optical transduction of vertical InP nanowire resonators, correlating laser position to signal amplitude, calibration, and frequency…
3D printed waveguides for optogenetics applications: design optimization and optical characterization
Giorgio Scordo, Kostas Kanellopulos, Surangrat Thongkorn +8
Optogenetics has emerged as a powerful tool for disease modeling, enabling precise control of cellular activities through light stimulation and providing a valuable insights into d…
Design optimization of silicon nitride nanomechanical resonators for thermal infrared detectors: a guide through key figures of merit
Paolo Martini, Kostas Kanellopulos, Silvan Schmid
Thermomechanical infrared (IR) detectors have emerged as promising alternatives to traditional photon and thermoelectric sensors, offering broadband sensitivity and low noise witho…
Uncooled Thermal Infrared Detection Near the Fundamental Limit Using a Nanomechanical Resonator with a Broadband Absorber
Paolo Martini, Stefan Emminger, Kostas Kanellopulos +4
This paper introduces a thermal infrared detector utilizing a nano-optomechanical silicon nitride (SiN) resonator, equipped with a free-space impedance-matched (FSIM) absorber comp…
Stress-Dependent Optical Extinction in LPCVD Silicon Nitride Measured by Nanomechanical Photothermal Sensing
Kostas Kanellopulos, Robert G. West, Stefan Emminger +4
Understanding optical absorption in silicon nitride is crucial for cutting-edge technologies like photonic integrated circuits, nanomechanical photothermal infrared sensing and spe…
Comparative Analysis of Nanomechanical Resonators: Sensitivity, Response Time, and Practical Considerations in Photothermal Sensing
Kostas Kanellopulos, Friedrich Ladinig, Stefan Emminger +3
Nanomechanical photothermal sensing has significantly advanced single-molecule/particle microscopy and spectroscopy, and infrared detection through the use of nanomechanical resona…
Optimized Signal Estimation in Nanomechanical Photothermal Sensing via Thermal Response Modelling and Kalman Filtering
Hajrudin Bešić, Andreas Deutschmann-Olek, Kenan Mešić +2
We present an advanced thermal response model for micro- and nanomechanical systems in photothermal sensing, designed to balance speed and precision. Our model considers the two ti…
Photothermal Microscopy & Spectroscopy with Nanomechanical Resonators
Robert G. West, Kostas Kanellopulos, Silvan Schmid
In nanomechanical photothermal absorption spectroscopy and microscopy, the measured substance becomes a part of the detection system itself, inducing a nanomechanical resonance fre…
Nanomechanical Photothermal Near Infrared Spectromicroscopy of Individual Nanorods
Kostas Kanellopulos, Robert G. West, Silvan Schmid
Understanding light-matter interaction at the nanoscale requires probing the optical properties of matter at the individual nano-absorber level. To this end, we have developed a na…
Nanomechanical absorption spectroscopy of 2D materials with femtowatt sensitivity
Jan N. Kirchhof, Yuefeng Yu, Denis Yagodkin +9
Nanomechanical spectroscopy (NMS) is a recently developed approach to determine optical absorption spectra of nanoscale materials via mechanical measurements. It is based on measur…