Results 101 to 110 of about 15,243 (254)

Exploring Pb‐Chelation Chemistry in the Crystallization Dynamics of Halide Perovskites

open access: yesAdvanced 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

Java Sun SPOT sensor nodes

open access: yes, 2010
This thesis deals with the use of Java Sun SPOT sensor nodes for multipoint wireless temperature monitoring and regulation through these nodes. The theoretical part is the description, composition and operation of sensor nodes Sun Spot Java.
Malina, Karel
core  

rADSC-loaded tubular units composed of multilayer electrospun membranes promoted bone regeneration of critical-sized skull defects

open access: yesMaterials Futures
Adipose-derived stem cells (ADSCs) have considerable potential for bone regeneration. However, their performance is limited by a lack of scaffolds that adequately mimic the hierarchical structure of bone to promote proliferation and osteogenic ...
Huamin Jiang   +9 more
doaj   +1 more source

A Solar Position Sensor Based on Image Vision

open access: yesSensors, 2017
Solar collector technologies operate with better performance when the Sun beam direction is normal to the capturing surface, and for that to happen despite the relative movement of the Sun, solar tracking systems are used, therefore, there are rules and ...
Adolfo Ruelas   +5 more
doaj   +1 more source

Dual‐Function Interface Engineering for δ‐Phase‐Free Crystallization Toward Efficient and Stable FAPbI3 Perovskite Solar Cells

open access: yesAdvanced Functional Materials, EarlyView.
This work presents a dual‐function interface engineering strategy using PEACl to suppress the formation of the non‐perovskite δ‐FAPbI3 phase at the critical SnO2 buried interface. This approach enables the direct crystallization of the photoactive α‐phase, yielding highly efficient and stable rigid (25.6%) and flexible perovskite solar cells with ...
Xiao Wu   +7 more
wiley   +1 more source

Plug-and-Play Power Resources and Agent-Based Coordination for Energy-Aware Wireless Sensor Nodes

open access: yes, 2009
A major constraint of sensor network deployments is their power supply: batteries have a limited lifetime and must be replaced when depleted. Recent advances in the field of energy harvesting mean that sensor nodes can now be powered by environmental ...
Grabham, N. J.   +7 more
core  

Distributed state estimation for uncertain Markov-type sensor networks with mode-dependent distributed delays

open access: yes, 2011
This the post-print version of the Article. The official published version can be accessed from the link below - Copyright @ 2012 John Wiley & Sons, Ltd.In this paper, the distributed state estimation problem is investigated for a class of sensor ...
Zidong Wang   +5 more
core   +1 more source

The Ni,Cd Heteroatoms‐Initiated Synergistic Tuning of Electron Configuration in Fe2VO4 Nanosheets Electrocatalysts to Profoundly Stabilize Alkaline Seawater Electrolysis

open access: yesAdvanced Functional Materials, EarlyView.
A Ni,Cd‐codoped Fe2VO4/NF bifunctional electrocatalyst is rationally designed for efficient seawater electrolysis. Synergistic effect modulates electron configuration, optimizes intermediates adsorption, stabilizes high‐valence Fe/V sites, and repels chloride ions to suppress corrosion and side reactions, thus contributing to performance improvement of
Weiguo Huang   +15 more
wiley   +1 more source

Flight Qualified Micro Sun Sensor for Mars Applications

open access: yes, 2005
A Right qualified micro sun sensor is being developed and flight qualified for future Man missions. The micro sun sensor, which Is basically a small pinhole camera, consists of a small mask with pinholes, placed on top of an image detector. Images of the
Lee, Choonsup   +3 more
core  

A PINHOLE SUN SENSOR FOR BALLOON-BORNE EXPERIMENT ATTITUDE DETERMINATION [PDF]

open access: yes, 2013
We report on the design, calibration and in-flight performance of a sun sensor, which is used to determine the attitude of a balloon-borne telescope. The device uses a position-sensitive detector (PSD) in a pinhole camera.
Korotkov, A. L.   +5 more
core   +1 more source

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