22 citations · 36 across the 7 of their papers we have counts for
7 papers
Coherent control of thermal transport with pillar-based phononic crystals
Tatu A. S. Korkiamäki, Tuomas A. Puurtinen, Mikko Kivekäs +4
Two-dimensional phononic crystals (PnCs) formed by a periodic array of holes in a suspended membrane have previously been used to coherently control thermal conductance at low temp…
Specific Heat of Thin Phonon Cavities at Low Temperature: Very High Values Revealed by ZeptoJoule Calorimetry
Adib Tavakoli, Kunal J. Lulla, Tuomas Puurtinen +4
Specific heat of phonon cavities is investigated in order to analyse the effect of phonon confinement on thermodynamic properties. The specific heat of free standing very thin SiN…
Controlling thermal conductance using three-dimensional phononic crystals
Samuli Heiskanen, Tuomas Puurtinen, Ilari J. Maasilta
Controlling thermal transport at the nanoscale is vital for many applications. Previously, it has been shown that this control can be achieved with periodically nanostructured two-…
A Composite Phononic Crystal Design for Quasiparticle Lifetime Enhancement in Kinetic Inductance Detectors
Tuomas A. Puurtinen, Karwan Rostem, Pieter J. de Visser +1
A nanoscale phononic crystal filter (reflector) is designed for a kinetic inductance detector where the reflection band is matched to the quasiparticle recombination phonons with t…
Simultaneous Noise and Impedance Fitting to Transition-Edge Sensor Data using Differential Evolution
Ari Pekka Helenius, Tuomas Puurtinen, Kimmo Kinnunen +1
We discuss a robust method to simultaneously fit a complex model both to the complex impedance and the noise data for transition-edge sensors (TES). It is based on a differential e…
Minimizing coherent thermal conductance by controlling the periodicity of two-dimensional phononic crystals
Yaolan Tian, Tuomas A. Puurtinen, Zhuoran Geng +1
Periodic hole array phononic crystals (PnC) can strongly modify the phonon dispersion relations, and have been shown to influence thermal conductance coherently, especially at low…
Radial phononic thermal conductance in thin membranes in the Casimir limit: Design guidelines for devices
Tuomas Puurtinen, Ilari Maasilta
In a previous publication, we discussed the formalism and some computational results for phononic thermal conduction in the suspended membrane geometry for radial heat flow from a…