24 papers · ranked by Valyu relevance
Giada Petringa, Luigi Raffaele, Giacomo Cuttone, Mariacristina Guarrera + 7 more
Percentage depth-dose (PDD) distributions are fundamental to characterizing radiation beams in radiotherapy. This review provides an overview of both methods and sensor technologies for measuring PDD in photon, electron, proton, and carbon-ion beams. We summarize conventional dosimetry techniques, including…
Juan Garcia-Bellido
Reheating after inflation is one of the strongest sources of gravitational waves (GW), producing a stochastic background (SGWB) with a non-thermal spectrum peaked at frequencies of order a few GHz. Detecting it is difficult: experiments based on the inverse Gertsenshtein effect in intense magnetic fields reach the MHz…
F. Artibani, L. Abbene, Antonino Buttacavoli, Manuele Bettelli + 36 more
Francesco Artibani 1 ,2,a, Leonardo Abbene 3 , 1 , Antonino Buttacavoli 3 , 1 , Manuele Bettelli 4 , Gaetano Gerardi 3 , Fabio Principato3, 1 , Andrea Zappettini 4 , Massimiliano Bazzi 1 , Giacomo Borghi5, 6 , Damir Bosnar7, 1 , Mario Bragadireanu 8 , Marco Carminati 5 , 6 , Alberto Clozza 1 , Francesco Clozza 1 , 10 …
Andreas Gsponer, Sebastian Onder, Stefan Gundacker, Jürgen Burin + 5 more
Silicon carbide (SiC) has been widely adopted in the semiconductor industry, particularly in power electronics, because of its high temperature stability, high breakdown field, and fast switching speeds. Its wide bandgap makes it an interesting candidate for radiation-hard particle detectors in high-energy physics and…
Chiara Rita Failla, Simone Amaducci, Gaetano Elio Poma, Paolo Finocchiaro + 2 more
Highlights What are the main findings? 1. A light readout from scintillators by means of a SiPM can or cannot give rise to non-linearity at a high energy, depending on the light decay time and on the number of SiPM microcells.What is the implication of the main finding? 1. A careful choice of scintillator and SiPM can…
M. Kumar, Tushar Verma, Pankaj Jain, Raj Ganesh Pala + 1 more
Accurate quantification of slow-neutron flux in mixed radiation environments containing chargedparticle and fast-neutron backgrounds is critically important, particularly in systems where the radiation-field composition is not known a priori. In this work, we present an experimentally validated method for the…
Allen R. Goode, Kevin A. Wunderle, David W. Jordan
Today's diagnostic medical physicist finds a broad variety of instruments available to make the numerous quality control (QC) measurements needed for routine equipment evaluations. One of the distinguishing features of different options is the availability of multi-purpose solid-state detectors (SSD) and…
Jinlin Chang, Ting Liu, Xiao Geng, Genting Dai + 6 more
Title: Highlights 1. Surface/interface engineering can compensate for defects, adjust the bandgap, and develop novel quantum structures, which consequently optimize photovoltaic units and revolutionize optoelectronic devices. 2. This review comprehensively elaborates on the surface/interface engineering scheme of…
Yan Liu, Yongxin Deng, Quanwei Zhang, Huafeng Li + 7 more
Silicon carbide (SiC), a third-generation wide-bandgap semiconductor, demonstrates prominent application advantages for extreme-environment sensing scenarios including deep-space exploration, nuclear reactor monitoring, and fusion device diagnosis, which benefit from its excellent radiation resistance, high-temperature…
S. V. Evdokimov, A. M. Gorin, V. I. Izucheev, Yu. V. Kharlov + 6 more
The results of measurements of the characteristics of photodetectors based on large-area SiPM matrices with a wide dynamic range are presented. The potential application of SiPM-based photodetectors for electromagnetic calorimetry in the energy range from hundreds of keV to tens of GeV is explored. The potential…
R. Yu. Chaplynskyi, F. A. Danevich, D. V. Kasperovych, V. R. Klavdiienko + 5 more
This study investigated using of silicon photomultiplier (SiPM) for scintillation γ-spectrometry with CdWO4, CsI(Tl), and NaI(Tl) crystal scintillators. At room temperature, CsI(Tl) crystal scintillator provides the best performance, while the achievable energy resolution is lower compared to that obtained with…
Jingxuan He, Congcong Wang, Yi Zhan, Zhenyu Jiang + 2 more
A silicon carbide PIN detector was fabricated and its radiation tolerance under Ta heavy ion irradiation of 2370 MeV was evaluated. Its electrical properties, charge collection performance and time resolution of $β$-particles ($^{90}$Sr) are reported. The leakage currents for unirradiated and irradiated 4H-SiC PIN…
Yingjie Huang, Congcong Wang, Jingxuan He, Yi Zhan + 3 more
A novel graphene-optimized silicon carbide PIN detector was fabricated. Its electrical properties, charge collection performance and signal rise time were evaluated under non-irradiated conditions and under X-ray irradiation with an energy of 160 keV at doses of 0.1 MGy and 1 MGy. The leakage currents of the detectors…
Alberto J. Ruiz, Edwin A. Robledo, Eammon A. Littler
Fluorescence imaging remains largely qualitative and device-specific, limiting reproducibility and intersystem comparisons. Advancing toward quantitative imaging requires a radiometric characterization framework that provides SI-traceable units while explicitly addressing the interdependent factors that govern image…
Matteo Biassoni, Andrea Nava, Oscar Azzolini, Mattia Beretta + 20 more
The Neganov-Trofimov-Luke (NTL) effect is used by experiments based on cryogenic detectors to boost the sensitivity of light-sensitive devices down to a few optical photons. In this work we introduce a silicon light-detector technology that implements NTL amplification at millikelvin temperatures using transparent…
Authors not listed
Four new thiourea-functionalized ligands based on aminopyrazole frameworks were synthesized and characterized by NMR spectroscopy, mass spectrometry, and single-crystal X-ray diffraction. The crystal structures of all ligands, as well as a zinc(II) chloride complex, were determined. Excitation and emission properties…
Authors not listed
Solid-state batteries (SSBs) that use a Li metal electrode degrade rapidly. In understanding degradation in SSBs, it is challenging to isolate defects originating from cell manufacturing from those associated with electrochemical processes. It is also difficult to observe the nucleation of critical defects while also…
J. Demas, L. Tan, S. Ramachandran
The performance of a laser scanning microscope inevitably depends on the performance of the point detector. As laser scanning approaches aim to penetrate deeper in tissue, there is a commensurate need for detectors that can operate with high sensitivity, bandwidth, and dynamic range at near-infrared wavelengths where…
Amish Patel, Xingjian Zhong, Mallory Moffett, Yidan Sun + 1 more
While shortwave infrared (SWIR) imaging provides superior tissue penetration and reduced autofluorescence for preclinical applications, quantitative fluorescence analysis is hindered by the limited dynamic range of InGaAs cameras, forcing a focus on either bright or dim anatomical features. We develop a high dynamic…
Authors not listed
Control over electron density and conductivity is a cornerstone of semiconductor technology. Here, we report electrochemical control over electron density and conductivity in films of InAs colloidal quantum dots (QDs) capped with ethanedithiol ligands. The quantum-confined twofold degenerate 1S1/2(e) electron state can…
Authors not listed
In this work, we address the challenge of designing versatile luminophores that maintain their emissive properties across various phases, including solutions and solid states (dual-state emission, DSE). We report the synthesis and detailed characterization of a series of Twisted Intramolecular Charge Transfer…
Authors not listed
Thermally activated delayed fluorescence (TADF) is a desirable emission mechanism that can translate into highly efficient organic light-emitting diodes (OLEDs). Conventionally, the TADF kinetics have been extracted by analysing the transient photoluminescence (PL) of the emitters in combination with measurements of…
Peter Kirchweger, Shahar Seifer, Sharon Grayer Wolf, Neta Varsano + 3 more
Cryo-electron microscopy is transitioning from investigation of isolated macromolecules to in situ studies bridging the realms of structural and cellular biology. Newly available detector technologies enable unconventional contrast modes with particular advantages. Here we demonstrate application of quadrant diode…
Authors not listed
Solid-state cross-coupling is a promising synthetic strategy, enabling green processes and access to otherwise unattainable products. Inspired by the fundamental diffusion dynamics observed in nature, we developed a polymeric palladium-catalyzed solid-state Suzuki–Miyaura reaction that proceeds without mechanical…