Results 51 to 60 of about 1,771,729 (203)

Ion Concentration and Voltage Imaging With Fluorescent Nanodiamonds

Advanced Materials, EarlyView.
We demonstrate reversible switching between the fluorescent NV0 and the dark NV+ state, in sub‐30 nm FNDs via surface oxidation and hydrogenation, respectively. In an electrochemical cell, we show that the fluorescence from hydrogenated particles enables all‐optical imaging of voltages and ion concentrations at the micrometer scale.
Patrick Voorhoeve, Alessandro Mameli, Hiroshi Abe, Takeshi Ohshima, Qiang Sun, Anita Quigley, Rob Kapsa, Nikolai Dontschuk, Philipp Reineck   +8 more
wiley   +1 more source

DLTPulseGenerator: A library for the simulation of lifetime spectra based on detector-output pulses

SoftwareX, 2018
The quantitative analysis of lifetime spectra relevant in both life and materials sciences presents one of the ill-posed inverse problems and, hence, leads to most stringent requirements on the hardware specifications and the analysis algorithms. Here we
Danny Petschke, Torsten E.M. Staab
doaj   +1 more source

Positron annihilation lifetime spectroscopy using fast scintillators and digital electronics [PDF]

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2019
Positron Annihilation Lifetime Spectroscopy (PALS) is a non-destructive radiological technique widely used in material science studies. PALS typically relies on an analog coincidence measurement setup and allows the estimate of the positron lifetime in a material sample under investigation.
Fang, Ming, Bartholomew, Nathan, Di Fulvio, Angela   +2 more
openaire   +2 more sources

Structural and Compositional Effects on the Scintillation Properties of Fast Emitting Metal‐Organic Frameworks

Advanced Science, EarlyView.
The crystalline structure, the atomic numbers of the constituent elementsand the size of MOF crystals each influence their photoluminescence and scintillation properties in distinct ways. Together, these factors provide valuable guidelines for designing systems with optimized performance and tunable timing characteristics, arising from the synergistic ...
Francesca Cova, Jacopo Perego, Biplab Joarder, Nobuhiro Yanai, Anna Vedda, Silvia Bracco, Angiolina Comotti, Angelo Monguzzi, Irene Villa   +8 more
wiley   +1 more source

Commissioning of the J-PET detector in view of the positron annihilation lifetime spectroscopy [PDF]

, 2018
The Jagiellonian Positron Emission Tomograph (J-PET) is the first PET device built from plastic scintillators. It is a multi-purpose detector designed for medical imaging and for studies of properties of positronium atoms in porous matter and in living ...
Rakoczy, K., Kisielewska, Daria, Skurzok, Magdalena, Zgardzińska, B., Krzemień, Wojciech, Kacprzak, K., Kapłon, Łukasz, Shivani, Shivani, Rudy, Zbigniew, Silarski, Michał, Klimaszewski, Konrad, Gajos, Aleksander, Krawczyk, Nikodem, Niedźwiecki, Szymon, Raj, Juhi, Czerwiński, Eryk, Curceanu, C., Mohammed, Muhsin, Kozik, Tomasz, Kowalski, P., Kubicz, Ewelina, Moskal, Paweł, Wiślicki, W., Sharma, Sushil, Hiesmayr, B. C., Gorgol, M., Jasińska, B., Gupta-Sharma, Neha, Korcyl, Grzegorz, Pawlik-Niedźwiecka, Monika, Shopa, R. Y., Dulski, Kamil, Pałka, Marek, Raczyński, L.   +33 more
core   +1 more source

Positron annihilation spectroscopy on a beam of positrons the LEPTA facility

EPJ Web of Conferences, 2017
The results and possibilities of the samples surfaces research by the Doppler method of positron annihilation spectroscopy (PAS) for a monochromatic beam of positrons at the LEPTA facility are presented in this paper.
Ahmanova E.V., Eseev M.K., Kobets A.G., Meshkov I.N., Orlov O.S., Sidorin A.A., Siemek K., Horodek P.   +7 more
doaj   +1 more source

Detection of phase separation of neutron-irradiated Fe–Cr binary alloys using positron annihilation spectroscopy

Nuclear Materials and Energy, 2018
Phase separation in Fe–Cr binary alloys irradiated with neutrons at 473 K and 573 K was investigated using positron annihilation spectroscopy. Using positron annihilation coincidence Doppler broadening (CDB) measurements, the phase separation progress ...
Y. Noshita, K. Sato, H. Yamashita, R. Kasada, Q. Xu, M. Hatakeyama, S. Sunada   +6 more
doaj   +1 more source

Vacancy creation in electron irradiated Ni₃Al

, 2004
We study the defect creation in electron irradiated Ni3Al. The complete irradiation experiment was simulated using Monte Carlo and molecular dynamics techniques.
Segers, D. (author), Mondelaers, W. (author), van Petegem, S. (author), Zhurkin, Eugeni E. (author)   +3 more
core   +1 more source

Study on the concentration and size of vacancy defect in W-K alloy

四川大学学报. 自然科学版, 2019
W-K alloy has many advantages, such as high melting point, the resistance to thermal shock, and excellent resistance to helium hydrogen plasma irradiation.
ZHANG Yuan-Yuan, LIU Nan-Shun, ZHANG Pei-Yuan, DENG Ai-Hong   +3 more
doaj  

Self‐Assembled Telecom Color Centers in Silicon and Their Growth Environment

Advanced Physics Research, EarlyView.
Influence of the growth pressure during the formation of self‐assembled color centers in silicon grown by molecular beam epitaxy at ultra‐low temperatures on the color center's photoluminescence spectral signature. The growth pressure crucially determines color center selectivity, as evidenced by G‐centers, W‐centers, and T‐centers, matrix purity, and ...
Jacqueline Marböck, Enrique Prado Navarrete, Merve Karaman, Oliver E. Lang, S. Mijatovic, Thomas Fromherz, Maciej O. Liedke, Andreas Wagner, Moritz Brehm, Johannes Aberl   +9 more
wiley   +1 more source