Results 111 to 120 of about 30,203 (261)

Testing and Simulation of Multilayer Polyvinylidene Fluoride‐Based Piezoelectric Energy Harvester Devices

open access: yesAdvanced Materials Technologies, EarlyView.
The study considers the use of polymer/dielectric‐based multilayers piezoelectric Energy Harvesters (EH) to produce an output voltage and current, by exploiting the mechanical energy provided by human organs movements. In particular, the heart motion is considered from the kinematic viewpoint, and a multiphysics theoretical model is developed to assess
Hamdi Ezzin   +5 more
wiley   +1 more source

A Direction‐Aware Piezo‐Transmittance Strain Sensor via Engineered Alignment of Carbon Nanotubes (CNTs)

open access: yesAdvanced Materials Technologies, EarlyView.
A direction‐aware piezo‐transmittance strain sensor is realized through the engineered alignment of carbon nanotubes. This anisotropic architecture instantaneously modulates optical transmittance, achieving ultra‐high sensitivity and exceptionally low hysteresis. By effectively eliminating signal crosstalk to precisely decouple multidirectional strains,
Byeongmin Kang   +15 more
wiley   +1 more source

Rolls of Stress Proteins.

open access: yesZen Nihon Shinkyu Gakkai zasshi (Journal of the Japan Society of Acupuncture and Moxibustion), 1997
openaire   +2 more sources

Turning Water Into a Tool: From Degradation Pathways to Functional Engineering in Halide Perovskites

open access: yesAdvanced Materials Technologies, EarlyView.
Water exhibits a threshold‐dependent dual role in lead halide perovskites, acting either as a degradation trigger or as a powerful tool for defect passivation, recrystallization, and structural engineering. This review discusses how controlled water‐mediated interactions govern stability, dimensionality, and optoelectronic performance, providing ...
Raphaella T. S. Gonçalves   +4 more
wiley   +1 more source

Stresses caused by cold-rolling.

open access: yesTechnologic Papers of the Bureau of Standards, 1920
H.M. Howe, E.C. Groesbeck
openaire   +1 more source

Fabrication of Fibers With Complex Features Using Thermal Drawing of 3D‐Printed Preforms

open access: yesAdvanced Materials Technologies, EarlyView.
3D printing enables rapid fabrication of macroscale polymer preforms with complex geometries. Thermal drawing then scales these structures into long fibers while preserving micron‐scale cross‐sectional features. This workflow provides a fast, low‐cost route to functional fibers with tailored geometries and material combinations for catheter, robotic ...
Ali Anil Demircali   +4 more
wiley   +1 more source

重载点接触热弹流润滑中滚子表面剪应力分析

open access: yesJixie chuandong, 2008
The thermal EHL is simulated by an aviation lubricating oil HKD-1 in a point contact under heavier load and computed the shear stress distributions at a roller surface.
王燕霜   +4 more
doaj  

Barn och stress - Specialpedagogens roll i det förebyggande arbetet/Childern and stress - the roll of the education teacher in the stress prevention

open access: yes, 2006
Syftet med följande arbete är att ta del av specialpedagogers uppfattningar, upplevelser och kunskaper om barn och stress. Därigenom kan vi få en ökad kunskap om hur vi identifierar barn som är stressade, om olika stress- och skyddsafaktorer samt hur vi i skolan kan arbeta med stressförebyggande åtgärder.
Olsson, Majlis, Osaeus, Anna
openaire   +1 more source

Evolution of OLED Lamination Technology With Development of Display Form Factors

open access: yesAdvanced Materials Technologies, EarlyView.
This review evaluates the evolution of organic light‐emitting diode (OLED) lamination technologies alongside advancing display form factors. It contrasts optically clear adhesives and resins, highlighting uniformity control for rigid screens, bubble‐free optimization for bended architectures, and visible‐light curing for foldable layers.
Kwan‐Young Han, Ji‐Hoon Park
wiley   +1 more source

Coating‐Free Nanoscratching for Liquid‐Crystal Alignment on PCB‐Compatible Millimeter‐Wave Reflective Unit Cells

open access: yesAdvanced Materials Technologies, EarlyView.
Direct nanoscratching with a 500 nm diamond lapping film creates groove‐guided liquid‐crystal alignment interfaces on PCB‐compatible Cu‐patterned RF substrates within minutes, eliminating polymer coating and high‐temperature baking. The coating‐free process enables optical/molecular alignment validation and voltage‐programmable 28 GHz reflection‐phase ...
Junseok Ma   +5 more
wiley   +1 more source

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