Results 71 to 80 of about 53,375 (285)
Silent emergency alarm system for schools and the like [PDF]
, 1973 An emergency alert system is described. In a school each classroom (or other area) is instrumented with a hidden microphone and receiver tuned to a non-audible frequency.
Read, W. S., Roberts, V. W.
core +1 more source
Advanced Functional Materials, EarlyView.Hydroxyl‐terminated MXene is integrated with a redox‐active covalent organic framework through electrostatic self‐assembly followed by hydrothermal treatment to construct MXene/COF heterostructures with a built‐in interfacial electric field. Termination‐controlled interfacial electronic modulation induces charge redistribution and favorable band ...
Cheru Fekadu Molla +4 more
wiley +1 more source
Fast Thermo-reflectance Bolometry [PDF]
, 2003 We present a new approach to bolometry based on the measurement of the optical reflectivity change of a thin metal layer deposited on a transparent substrate.
Boller, K.J. +3 more
core +1 more source
Apparatus to control and visualize the impact of a high-energy laser pulse on a liquid target [PDF]
, 2017 We present an experimental apparatus to control and visualize the response of a liquid target to a laser-induced vaporization. We use a millimeter-sized drop as target and present two liquid-dye solutions that allow a variation of the absorption ...
Alexander L. Klein +8 more
core +3 more sources
Advanced Functional Materials, EarlyView.A 2D heterointerface with a two‐site anchor bridge suppresses nonradiative recombination at the perovskite/C₆₀ interface by reducing surface defects, elevating the Fermi level, and strengthening the electric field. This strategy enables efficient electron extraction, delivering 26.32% efficiency, 1.217 V Voc, excellent operational stability, and broad ...
Chaohui Li +27 more
wiley +1 more source
Design of A Thermoelectric Generator for Battery Charging using Heat from A Steam Iron Base
Jurnal ELTIKOM: Jurnal Teknik Elektro, Teknologi Informasi dan KomputerThis study explores an alternative method of generating electrical energy using a thermoelectric generator that utilizes heat from the soleplate of a steam iron and six thermoelectric units connected in series.
Delta Sundari +7 more
doaj +1 more source
Exploring Pb‐Chelation Chemistry in the Crystallization Dynamics of Halide Perovskites
Advanced Functional Materials, EarlyView.A mechanism of how Pb‐chelation chemistry governs coordination geometry and initial nucleation behavior at the precursor level of halide perovskite, by regulating the deprotonation state of a chelating additive, is elucidated. This allows for innovative reaction‐system design principles that promote coherent growth while suppressing defect formation in
Byeong Jun Kim +13 more
wiley +1 more source
Advanced Functional Materials, EarlyView.A fully programmable, dual‐inductive switchable halide perovskite memristor is demonstrated through precise BDAI2‐mediated interface engineering. This ion‐modulating layer suppresses stochastic filamentary growth, enabling stable, non‐filamentary switching via dynamic barrier modulation.
So‐Yeon Kim, Juan Bisquert
wiley +1 more source
Issues of dynamic chaos in technical discipline
Қарағанды университетінің хабаршысы. Физика сериясы, 2015 In article the description of experience of introduction to the content of technical disciplines of achievements of modern physics on the example of concept of dynamic chaos is given.
L.V. Chirkova +2 more
doaj
Index to NASA Tech Briefs, January - June 1966 [PDF]
, 1966 Index to NASA technological innovations for January-June ...
core +1 more source