Results 51 to 60 of about 1,357,413 (328)

COMPARISON OF PERFORMANCE CHARACTERISTICS OF GAMMA CAMERAS WITH SCINTILLATION NaI(TI) AND SEMICONDUCTOR CdZnTe DETECTORS

open access: yesSabiad
Objective: In recent years, gamma cameras with semiconductor detectors (CdZnTe) have entered routine practise diagnostic scintigraphic imaging in nuclear medicine.
Armağan Aydın   +2 more
doaj   +1 more source

A system of gamma ray imaging devices with coded apertures

open access: yesMATEC Web of Conferences, 2016
We describe a system consisting of two CdTe based gamma cameras with coded apertures and a video camera. The system is used for the localization of radioactive sources with the aid of triangulation.
Papadimitropoulos Christos   +4 more
doaj   +1 more source

Multi-wavelength observations of the transitional millisecond pulsar binary XSSJ12270-4859 [PDF]

open access: yes, 2015
We present an analysis of X-ray, Ultraviolet and optical/near-IR photometric data of the transitional millisecond pulsar binary XSSJ12270-4859, obtained at different epochs after the transition to a rotation-powered radio pulsar state.
Belloni, Tomaso   +9 more
core   +4 more sources

Microsphere Autolithography—A Scalable Approach for Arbitrary Patterning of Dielectric Spheres

open access: yesAdvanced Functional Materials, EarlyView.
MicroSphere Autolithography (µSAL) enables scalable fabrication of patchy particles with customizable surface motifs. Focusing light through dielectric microspheres creates well defined, tunable patches via a conformal poly(dopamine) photoresist. Nearly arbitrary surface patterns can be achieved, with the resolution set by the index contrast between ...
Elliott D. Kunkel   +3 more
wiley   +1 more source

MOXE: An X-ray all-sky monitor for Soviet Spectrum-X-Gamma Mission [PDF]

open access: yes, 1989
A Monitoring Monitoring X-Ray Equipment (MOXE) is being developed for the Soviet Spectrum-X-Gamma Mission. MOXE is an X-ray all-sky monitor based on array of pinhole cameras, to be provided via a collaboration between Goddard Space Flight Center and Los ...
Fenimore, E. E.   +4 more
core   +1 more source

The intriguing nature of the high energy gamma ray source XSSJ12270-4859 [PDF]

open access: yes, 2010
The nature of the hard X-ray source XSSJ12270-4859 is still unclear though it was claimed to be a magnetic Cataclysmic Variable. We here present a broad-band X-ray and gamma ray study based on a recent XMM-Newton observation and archival INTEGRAL and ...
Abdo   +38 more
core   +5 more sources

Spectrally Tunable 2D Material‐Based Infrared Photodetectors for Intelligent Optoelectronics

open access: yesAdvanced Functional Materials, EarlyView.
Intelligent optoelectronics through spectral engineering of 2D material‐based infrared photodetectors. Abstract The evolution of intelligent optoelectronic systems is driven by artificial intelligence (AI). However, their practical realization hinges on the ability to dynamically capture and process optical signals across a broad infrared (IR) spectrum.
Junheon Ha   +18 more
wiley   +1 more source

Impact of Lattice Heterogeneity on Broadband Optical Retardation in Stacked 2D Perovskite Single Crystals

open access: yesAdvanced Functional Materials, EarlyView.
It is shown that interfaces between organic and inorganic layers govern long‐range stacking disorder and in‐plane anisotropy in 2D metal‐halide perovskites. By comparing single‐cation AB‐AB and ordered mixed‐cation ABCD‐ABCD stackings, SCXRD reveals enhanced mosaicity, while optics confirm high birefringence.
Yixuan Dou   +6 more
wiley   +1 more source

A variable absorption feature in the X-ray spectrum of a magnetar [PDF]

open access: yes, 2013
Soft gamma-ray repeaters (SGRs) and anomalous X-ray pulsars (AXPs) are slowly rotating, isolated neutron stars that sporadically undergo episodes of long-term flux enhancement (outbursts) generally accompanied by the emission of short bursts of hard X ...
AJ van der Horst   +39 more
core   +3 more sources

MPI‐Guided Photothermal Therapy of Prostate Cancer Using Stem Cell Delivery of Magnetotheranostic Nanoflowers

open access: yesAdvanced Functional Materials, EarlyView.
Tumor‐tropic human mesenchymal stem cells (hMSCs) were used as delivery vehicles for magnetotheranostic gold–iron oxide nanoflowers. Magnetic particle imaging of the iron component demonstrated widespread intratumoral distribution and sustained retention in contrast to injection of naked nanoflowers.
Behnaz Ghaemi   +7 more
wiley   +1 more source

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