Results 1 to 10 of about 431,891 (149)

A Study on the Improvement of the Durability of an Energy Harvesting Device with a Mechanical Stopper and a Performance Evaluation for Its Application in Trains [PDF]

open access: goldMicromachines, 2020
Durability is one of the critical issues concerning energy harvesting devices. Even with the energy harvesting device’s excellent performance design, the moving components, such as the spring, get damaged during operation.
Jaehoon Kim
doaj   +2 more sources

Recent Development in Nanomaterial-Based Electrochemical Sensors for Cholesterol Detection

open access: yesChemosensors, 2021
Functional nanomaterials have attracted significant attention in a variety of research fields (in particular, in the healthcare system) because of the easily controllable morphology, their high chemical and environmental stability, biocompatibility, and ...
Hemraj Mahipati Yadav   +3 more
doaj   +1 more source

Design and Manufacturing of Equipment for Investigation of Low Frequency Bioimpedance

open access: yesMicromachines, 2022
The purpose of this study was to highlight a method of making equipment for the investigation of low frequency bioimpedance. A constant current with an average value of I = 100 µA is injected into the human body via means of current injection electrodes,
Lucian Pîslaru-Dănescu   +3 more
doaj   +1 more source

Molecular Engineering of Photosensitizers for Solid‐State Dye‐Sensitized Solar Cells: Recent Developments and Perspectives

open access: yesChemistryOpen, 2023
Dye‐sensitized solar cells (DSSCs) are a feasible alternative to traditional silicon‐based solar cells because of their low cost, eco‐friendliness, flexibility, and acceptable device efficiency. In recent years, solid‐state DSSCs (ss‐DSSCs) have garnered
Dr. Bommaramoni Yadagiri   +6 more
doaj   +1 more source

Cellulose Nanofiber Composite with Bimetallic Zeolite Imidazole Framework for Electrochemical Supercapacitors

open access: yesNanomaterials, 2021
Cellulose nanofiber (CNF) and hybrid zeolite imidazole framework (HZ) are an emerging biomaterial and a porous carbonous material, respectively. The composite of these two materials could have versatile physiochemical characteristics.
Hemraj M. Yadav   +4 more
doaj   +1 more source

Experimentally Verified Analytical Models of Piezoelectric Cantilevers in Different Design Configurations

open access: yesSensors, 2021
This paper deals with analytical modelling of piezoelectric energy harvesting systems for generating useful electricity from ambient vibrations and comparing the usefulness of materials commonly used in designing such harvesters for energy harvesting ...
Zdenek Machu   +3 more
doaj   +1 more source

Surface-Passivated CsPbBr3 for Developing Efficient and Stable Perovskite Photovoltaics

open access: yesCrystals, 2021
All-inorganic perovskites consisting of only inorganic elements have been recently considered as highly stable semiconductors for photoactive layer of optoelectronics applications.
Hyeon Ju Tak   +3 more
doaj   +1 more source

Microactuation of Magnetic Nanofluid Enabled by a Pulsatory Rotating Magnetic Field

open access: yesActuators, 2023
A microactuation process was developed with the help of four coils that generate a pulsatory rotating magnetic field. A small actuator stator, which contains a 46 mm acrylonitrile butadiene styrene (ABS) opened box and four coils with E-type ferrite ...
Lucian Pîslaru-Dănescu   +4 more
doaj   +1 more source

Electrostrictive Polymers for Mechanical-to-Electrical Energy Harvesting [PDF]

open access: yes, 2016
Research of electrostrictive polymers has generated new opportunities for harvesting energy from the surrounding environment and converting it into usable electrical energy. Piezoelectric ceramic based devices have long been used in energy harvesting for
Coutu, Ronald A., Jr.   +2 more
core   +2 more sources

A Novel Capacitance-Based In-Situ Pressure Sensor for Wearable Compression Garments

open access: yesMicromachines, 2019
This paper pertains to the development & evaluation of a dielectric electroactive polymer-based tactile pressure sensor and its circuitry. The evaluations conceived target the sensor’s use case as an in-situ measurement device assessing load ...
Steven Lao   +4 more
doaj   +1 more source

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