36 citations · 121 across the 9 of their papers we have counts for
9 papers
Far- and near-field photon noise limits to the detectivity of nanometer-thick thermal detectors
Olivier Merchiers, Aapo Varpula, Kirsi Tappura +2
Thermal-radiation detectors such as bolometers -- often found as thin, suspended films -- are intrinsically limited by their optical absorption properties and by their intrinsic th…
Infrared Bolometers Based on 40-nm-Thick Nano-Thermoelectric Silicon Membranes
Anton Murros, Kuura Sovanto, Jonna Tiira +3
State-of the-art infrared photodetectors operating in the mid- and long-wavelength infrared (MWIR and LWIR) are largely dominated by cryogenically cooled quantum sensors when the t…
Supporting quantum technologies with an ultra-low loss silicon photonics platform
Matteo Cherchi, Arijit Bera, Antti Kemppinen +9
Photonic integrated circuits (PICs) are expected to play a significant role in the ongoing second quantum revolution, thanks to their stability and scalability. Still, major upgrad…
Suppression of noise in graphene due to non-scalar mobility fluctuations induced by impurity motion
Masahiro Kamada, Weijun Zeng, Antti Laitinen +5
Low frequency resistance variations due to mobility fluctuations is one of the key factors of noise in metallic conductors. According to theory, such noise in a two-dimension…
Electrical low-frequency noise due to surface diffusion of scatterers on an ultra low noise graphene platform
Masahiro Kamada, Antti Laitinen, Weijun Zeng +5
Low-frequency noise is ubiquitous, even in high-end electronic devices. For qubits such noise results in decrease of their coherence times. Recently, it was found that adso…
Nano-thermoelectric infrared bolometers
Aapo Varpula, Kirsi Tappura, Jonna Tiira +5
Infrared (IR) radiation detectors are used in numerous applications from thermal imaging to spectroscopic gas sensing. Obtaining high speed and sensitivity, low-power operation and…
Large-area implementation and critical evaluation of the material and fabrication aspects of a thin-film thermoelectric generator based on aluminum-doped zinc oxide
Kirsi Tappura, Taneli Juntunen, Kaarle Jaakkola +4
A large-area thermoelectric generator (TEG) utilizing a folded thin-film concept is implemented and the performance evaluated for near room temperature applications having modest t…
Exploitation of Transparent Conductive Oxides in the Implementation of a Window-Integrated Wireless Sensor Node
Kaarle Jaakkola, Kirsi Tappura
Exploitation of transparent conductive oxides (TCO) to implement an energy-autonomous sensor node for a wireless sensor network (WSN) is studied and a practical solution presented.…
A numerical study on the design trade-offs of a thin-film thermoelectric generator for large-area applications
Kirsi Tappura
Thin-film thermoelectric generators with a novel folding scheme are proposed for large-area, low energy-density applications. Both the electrical current and heat transfer are in t…