Results 51 to 60 of about 58,117 (278)

On the comparison of energy sources: feasibility of radio frequency and ambient light harvesting

open access: yes, 2015
With growing interest in multi source energy harvesting including integrated microchips we propose a comparison of radio frequency (RF) and solar energy sources in a typical city.
Coutsias, Evangelos   +3 more
core   +1 more source

Rectifier for RF Energy Harvesting

open access: yesInternational Journal of Computer Applications, 2016
Wireless medical devices are used for monitoring a patient’s health. These devices transmit patient’s health data to external programming devices through communication links. Battery life is a significant issue with these wireless medical devices.
R. Brinda, P. Rengalakshmi
openaire   +1 more source

Extensive Review of Materials for Next‐Generation Transparent Batteries and Their Design Strategies

open access: yesAdvanced Functional Materials, EarlyView.
Review explores emerging materials and design strategies for transparent batteries, examining electrodes, electrolytes, separators, and device architectures optimized for high electrochemical performance, mechanical flexibility, and optical transparency.
Atul Kumar Mishra   +5 more
wiley   +1 more source

Design and performance analysis of a rectenna system for charging a mobile phone from ambient EM waves

open access: yesHeliyon, 2023
Advances in information technology have dramatically enhanced mobile phones. Power capacity is one of the most significant limitations of a mobile phone. As a result, efficient energy management in such devices is critical everywhere.
Pankaj Chandra Kar, Md. Ariful Islam
doaj   +1 more source

Sensitive and Nonlinear Far Field RF Energy Harvesting in Wireless Communications

open access: yes, 2018
This work studies both limited sensitivity and nonlinearity of far field RF energy harvesting observed in reality and quantifies their effect, attempting to fill a major hole in the simultaneous wireless information and power transfer (SWIPT) literature.
Alevizos, Panos N., Bletsas, Aggelos
core   +1 more source

Broadband, Flexible, Skin‐Compatible Carbon Dots/Graphene Photodetectors for Wearable Applications

open access: yesAdvanced Functional Materials, EarlyView.
Broadband, flexible photodetectors integrating nitrogen‐rich carbon dots with single‐layer graphene on plastic substrates are demonstrated. A biocompatible chitosan–glycerol electrolyte enables efficient low‐voltage gating and on‐skin operation. The devices exhibit ultraviolet‐to‐near‐infrared response, mechanical robustness under bending, and verified
Nouha Loudhaief   +20 more
wiley   +1 more source

A Hybrid Energy Harvester Based on Bowtie Periodic Antenna Surface

open access: yesIEEE Access
An innovative method is introduced for energy harvesting by combining a bowtie frequency selective rectenna surface with a traditional photovoltaic solar panel.
Mahmoud Abushab   +3 more
doaj   +1 more source

Laser‐Microscribed Glass Enables Surface‐Microfluidics‐Facilitated, Affordable, Rapid Cancer Diagnosis

open access: yesAdvanced Functional Materials, EarlyView.
A transparent, laser‐microscribed glass platform enables cancer diagnosis within 1 h—much faster than histology, which takes days, and free from the chemical or contrast risks of MRI or CT scans. The antibody‐functionalized rough glass surface captures viable cancer cells directly from suspension, allowing instant optical readout and offering a rapid ...
Anish Pal   +5 more
wiley   +1 more source

Smart Catheters for Diagnosis, Monitoring, and Therapy

open access: yesAdvanced Healthcare Materials, EarlyView.
This study presents a comprehensive review of smart catheters, an emerging class of medical devices that integrate embedded sensors, robotics, and communication systems, offering increased functionality and complexity to enable real‐time health monitoring, diagnostics, and treatment. Abstract This review explores smart catheters as an emerging class of
Azra Yaprak Tarman   +12 more
wiley   +1 more source

DTER: Schedule Optimal RF Energy Request and Harvest for Internet of Things

open access: yes, 2018
We propose a new energy harvesting strategy that uses a dedicated energy source (ES) to optimally replenish energy for radio frequency (RF) energy harvesting powered Internet of Things.
Luo, Yu   +4 more
core   +1 more source

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