Results 121 to 130 of about 154,815 (302)

Continued development of doped-germanium photoconductors for astronomical observations at wavelengths from 30 to 120 micrometers [PDF]

open access: yes
The development of doped-germanium detectors which have optimized performance in the 30- to 120-mu m wavelength range and are capable of achieving the objectives of the infrared astronomical satellite (IRAS) space mission is discussed.
Bratt, P. R., Lewis, N. N., Long, L. E.
core   +1 more source

NASA needs and trends in cryogenic cooling [PDF]

open access: yes, 1983
Projected NASA needs in spaceborne cryogenic systems and recent results of NASA cryogenic cooling technology efforts in infrared astronomy, X-ray astronomy, gamma ray astronomy, liquid helium and space stations are ...
Sherman, A.
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

open access: yesAdvanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova   +9 more
wiley   +1 more source

Telespectrograph Patent [PDF]

open access: yes, 1969
Telespectrograph for analyzing upper atmosphere by tracking bodies reentering atmosphere at high ...
Ameer, G. A., Walters, R. M.
core   +1 more source

Long-Term Measurement of Piglet Activity Using Passive Infrared Detectors. [PDF]

open access: yesAnimals (Basel), 2021
Besteiro R   +4 more
europepmc   +1 more source

Near‐Infrared Emitting Lanthanide Catecholate Giant Single Crystals – Morphology Control and Photon Down‐Conversion

open access: yesAdvanced Functional Materials, EarlyView.
Controlled syntheses of lanthanide coordination polymers based on the dihydroxybenzoquinone (DHBQ) organic linker afforded large single crystals of Ln‐DHBQ CPs (Ln = Yb, Nd). A novel structural variant of Yb‐DHBQ is identified by means of single crystal diffraction analysis.
Marina I. Schönherr   +7 more
wiley   +1 more source

IR Sensors, Related Materials, and Applications

open access: yesSensors
Infrared (IR) sensors are widely used in various applications due to their ability to detect infrared radiation. Currently, infrared detector technology is in its third generation and faces enormous challenges.
Nikolaos Argirusis   +4 more
doaj   +1 more source

Fast‐Responding O2 Gas Sensor Based on Luminescent Europium Metal‐Organic Frameworks (MOF‐76)

open access: yesAdvanced Functional Materials, EarlyView.
Luminescent MOF‐76 materials based on Eu(III) and mixed Eu(III)/Y(III) show rapid and reversible changes in emission intensity in response to O2 with very short response times. The effect is based on triplet quenching of the linker ligands that act as photosensitizers. Average emission lifetimes of a few milliseconds turn out to be mostly unaffected by
Zhenyu Zhao   +5 more
wiley   +1 more source

Design and experimental study of thermoelectric cooling device for infrared detectors based on the microchannel heat sink

open access: yesCase Studies in Thermal Engineering
Cooled infrared detectors are important in national defense, aerospace, and other fields. Cooled infrared detectors commonly use Stirling, throttling, and thermoelectric cooling.
Lin Zhou   +5 more
doaj   +1 more source

Field induced gap infrared detector [PDF]

open access: yes, 1990
A tunable infrared detector which employs a vanishing band gap semimetal material provided with an induced band gap by a magnetic field to allow intrinsic semiconductor type infrared detection capabilities is disclosed.
Elliott, C. Thomas
core   +1 more source

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