Results 91 to 100 of about 476,472 (303)

Trap‐Modified Inverted Organic Photodetectors via Layer‐by‐Layer Processing with Poly(N‐vinylcarbazole) Additives

open access: yesAdvanced Functional Materials, EarlyView.
Trap state engineering in inverted organic photodetectors (OPDs) is achieved via combined layer‐by‐layer (LbL) processing and poly(N‐vinylcarbazole) (PVK) incorporation. LbL reduces the trap density while PVK additives gradually shift trap states from shallow band‐edge to deep mid‐gap levels, tailoring the energy distribution.
Jingwei Yi   +10 more
wiley   +1 more source

Animal Flight Dynamics II. Longitudinal Stability in Flapping Flight

open access: yesJournal of Theoretical Biology, 2002
Stability is essential to flying and is usually assumed to be especially problematic in flapping flight. If so, problems of stability may have presented a particular hurdle to the evolution of flapping flight. In spite of this, the stability of flapping flight has never been properly analysed.
Taylor, G, Thomas, A
openaire   +3 more sources

Elementary Applications of a Rotorcraft Dynamic Stability Analysis [PDF]

open access: yes
A number of applications of a rotorcraft aeroelastic analysis are presented to verify that the analysis encompasses the classical solutions of rotor dynamics, and to examine the influence of certain features of the model.
Johnson, W.
core   +1 more source

Laser‐Induced Microfabrication of Carbon Nanostructure: Processing Mechanism and Application for Next‐Generation Battery Technology

open access: yesAdvanced Functional Materials, EarlyView.
The article reviews laser‐processed carbons from various precursors, processing mechanism and their application in advanced batteries. The laser process is chemical free, fast, and scalable, enabling improved battery performance and stability for Li, Na, and Zn battery technologies.
Sujit Deshmukh   +2 more
wiley   +1 more source

Helicopter mathematical models and control law development for handling qualities research [PDF]

open access: yes
Progress made in joint NASA/Army research concerning rotorcraft flight-dynamics modeling, design methodologies for rotorcraft flight-control laws, and rotorcraft parameter identification is reviewed.
Aiken, Edwin W.   +3 more
core   +1 more source

Star Trackers Evaluation by Statistical Analysis [PDF]

open access: yesفناوری در مهندسی هوافضا
A comprehensive statistical analysis and comparison on the characteristics of star trackers used in the world can provide valuable information to researchers, manufacturers and customers in this field.
Mohammad Sajjad Mahdiyari   +2 more
doaj   +1 more source

Alkali Ion‐Incorporated HfO2 Dielectrics for Reconfigurable Neuromorphic Computing

open access: yesAdvanced Functional Materials, EarlyView.
This work presents an indium gallium zinc oxide (IGZO) transistor with an alkali cation‐integrated hafnium dioxide (HfO2) dielectric exhibiting synaptic behavior via ion retention. The solution‐based film fabrication strategy overcomes the limitations of atomic layer deposition (ALD) and precursor coating, enabling the control of synaptic retention ...
Seung Yeon Ki   +7 more
wiley   +1 more source

The HIRM+ Flight Dynamics Model [PDF]

open access: yes, 2002
The major objective of the GARTEUR Action Group on Analysis Techniques for Clearance of Flight Control Laws FM(AG-11) is the improvement of the flight clearance process by increased automation of the tools used for modelbased analysis of the aircraft’s ...
Moormann, D.
core  

Model and Dynamic Analysis of a Three-Body Tethered Satellite System in Three Dimensions

open access: yesApplied Sciences
The three-body tethered satellite system is a new potential technology for the purposes of orbital transportation. In contrast to conventional orbit transfer methods, this system is expected to transport space supplies to a predetermined orbital altitude
Teng He, ZhanXia Zhu
doaj   +1 more source

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