21 papers · ranked by Valyu relevance
Roope Kokkoniemi, Joonas Govenius, Visa Vesterinen, Russell E. Lake + 10 more
'András M. Gunyhó' 'Kuan Y. Tan' 'Slawomir Simbierowicz' 'Leif Grönberg' 'Janne Lehtinen' 'Mika Prunnila' 'Juha Hassel' 'Antti Lamminen' 'Olli-Pentti Saira' 'Mikko Möttönen'] Since the introduction of bolometers more than a century ago, they have been used in various applications ranging from chemical sensors, consumer…
Y. Zong, R. U. Datla
A bolometer detector system was developed for the high accuracy infrared spectrophotometer at the National Institute of Standards and Technology to provide maximum sensitivity, spatial uniformity, and linearity of response covering the entire infrared spectral range. The spatial response variation was measured to be…
Fabian Niesler, Justyna K. Gansel, Sarah Fischbach, Martin Wegener
We demonstrate metamaterial metal-based bolometers, which take advantage of resonant absorption in that a spectral and/or polarization filter can be built into the bolometer. Our proof-ofprinciple gold-nanostructure-based devices operate around 1.5 µm wavelength and exhibit roomtemperature time constants of about 134…
A. Catalano, A. Coulais, Jean-Michel Lamarre
Bolometers are most often biased by Alternative Current (AC) in order to get rid of low frequency noises that plague Direct Current (DC) amplification systems. When stray capacitance is present, the responsivity of the bolometer differs significantly from the expectations of the classical theories. We develop an…
Philip Weigel, Erin V. Hansen, M. J. Dolinski
Noble liquid detectors have become an attractive option for exploring physics beyond the standard model. Current experiments are using these detectors to search for dark matter interactions, neutrinoless double beta decay, and other phenomena. Improved energy resolution can be leveraged from an optimized combination of…
S. L. Stever, F. Couchot
Electro-thermal coupling in semiconductor bolometers is known to create nonlinearities in transient detector response, particularly when such detectors are biased outside of their ideal regions (i.e. past the turnover point in their IV curves). This effect is further compounded in the case where a stray capacitance in…
Regina Magalhães, Luis Costa, Sonia Martin-Lopez, Miguel Gonzalez-Herraez + 2 more
'Miguel Gonzalez-Herraez' 'Alejandro F. Braña' 'Hugo F. Martins'] Until recently, the amount of solar irradiance reaching the Earth surface was considered to be a steady value over the years. However, there is increasing observational evidence showing that this quantity undergoes substantial variations over time, which…
Thang Duy Dao, Anh Tung Doan, Satoshi Ishii, Takahiro Yokoyama + 9 more
'Handegård Sele Ørjan' 'Dang Hai Ngo' 'Tomoko Ohki' 'Akihiko Ohi' 'Yoshiki Wada' 'Chisato Niikura' 'Shinsuke Miyajima' 'Toshihide Nabatame' 'Tadaaki Nagao'] We propose and experimentally demonstrate a compact design for membrane-supported wavelength-selective infrared (IR) bolometers. The proposed bolometer device is…
Deyong Duan, Mingxuan Xue, Kangkang Zhao, Taiyuan Liu + 8 more
'Jiaxuan Cao' 'Long Ma' 'Liang Chen' 'Hui Yuan' 'Qing Lin' 'Zizong Xua' 'Xiaolian Wang'] The cryogenic phonon scintillating bolometer is a promising and extremely attractive option to search for the nuclide neutrinoless double beta decay. In this paper, a pre-study of bolometer based on Li2MoO4 (LMO) crystal is…
Mohamed Mousa, Leif Bauer, Daien He, Sakshi Gupta + 6 more
Infrared detectors have traditionally been divided into two fundamental classes, mid-wave (MWIR, 3-5 µm) and long-wave (LWIR, 8-14 µm). Integrating MWIR and LWIR within a single device is challenging due to distinct materials, cooling needs, and detection mechanisms, while such integration is critical for improved…
András M. Gunyhó, Suman Kundu, Jian Ma, Wei Liu + 7 more
Measuring the state of a qubit is a key fundamental operation of a quantum computer. High-fidelity single-shot readout of superconducting qubits can be achieved using parametric amplifiers at millikelvin temperatures. However, scaling parametric amplifiers beyond hundreds of qubits is challenging due to practical size…
Aleksander Sešek, Damjan Berčan, Miha Gradišek, Andrej Švigelj + 1 more
The presented THz receiver is based on an antenna coupled titanium micro-bolometer. A new geometrical design improves the robustness and extends the lifetime of the sensor. A study of sensor lifetime using different biasing currents is presented. The lifetime was verified by several tests and over 1000 operating hours.…
M. J. Rees, Haifei Wang, Thomas Decker, Robinson L. Smith
This paper discusses questions of synthesizing and pressing vanadium oxides to create film-forming materials that can be used in producing optical coatings. Based on the film-forming materials thus created, technological processes have been developed for fabricating coatings from vanadium dioxide by two methods of…
Jolyon Troscianko
Spectroradiometery is a vital tool in a wide range of biological, physical, astronomical and medical fields, yet its cost and accessibility are frequent barriers to use. Research into the effects of artificial light at night (ALAN) further compounds these difficulties with requirements for sensitivity to extremely low…
Andrew Harvie, John de Mello
The Open Polarimeter (“Opol”) is a phase-based, high-resolution laser polarimeter formed from a small number of inexpensive optomechanical parts. The complete instrument can be assembled from scratch in two days for less than US$250, using only a 3D-printer and a benchtop milling machine. However despite its low cost…
Authors not listed
Tuning of the intramolecular charge transfer (ICT) in a molecule could lead to red-shifted absorption and emission maxima as well as enhanced nonlinear optical (NLO) response. Optimization of the electronic donor (D) and acceptor (A) strength, pi-conjugation and the medium could result in enhancement of first…
Authors not listed
Light is often the stimulus of choice for dynamically changing function in materials, from controlling phase transitions and dynamic chemistry to in-situ polymerizations, crosslinking, and 3D printing. The high temporal and spatial control over irradiation underpins the function of photovoltaics, smart materials…
Justin Earley, Anna Zieleniewska, Hunter Ripberger, Megan Lazorski + 7 more
We report evidence of excited-state ion pair reorganisation in a cationic iridium (III) photoredox catalyst in 1,4-dioxane. Microwave-frequency dielectric-loss measurements allow us to assign both ground and excited-state molecular dipoles and excited-state polarizability volumes. These measurements show significant…
Authors not listed
Tri-coordinated and tetra-coordinated boron derivatives form the backbone of boron-containing organic materials, where sp²/sp³ hybridized boron centers endow distinct spatial and electronic features that dictate their chemical/physical behaviors. Herein, we report a rational design of hybrid boron emitters integrating…
Naga Pranava Sree Kothoori, Pandiyan Sivasakthi, Mallesham Baithy, Ramprasad Misra + 1 more
Intramolecular charge transfer (ICT)-based chromophores are highly sought for designing near-Infrared (NIR) absorbing and emitting dyes, as well as designing chromophores for nonlinear optical (NLO) applications. The properties of these so-called ‘push-pull’ molecules could be tuned easily through modification of the…
Aimee Sheehan, Tatsiana Mikulchyk, Catherine De Castro, Safakath Karuthedath + 7 more
A series of new heavy-atom-free photosensitizers using 2,6-diethoxycarbonyl-BODIPY was designed and synthesized. Photoinduced electron transfer between the BODIPY and meso-aryl subunits followed by the formation of BODIPY triplet excited states via spin-orbit charge transfer intersystem crossing (SOCT-ISC) was studied…