National Edu News: IIT Hyderabad-NHAI sign MoU for Transportation Research  |  Cover Story: Elimination Round or Aptitude Test- How to Align CUET with NEP 2020 Goals  |  Life Inspirations: Master of a Dog House  |  Education Information: Climate Predictions: Is it all a Piffle!  |  Leadership Instincts: Raj Mashruwala Establishes CfHE Vagbhata Chair in Medical Devices at IITH   |  National Edu News: TiHAN supports a Chair for Prof Srikanth Saripalli at IIT Hyderabad  |  Teacher Insights: How To Build Competitive Mindset in Children Without Stressing Them  |  Parent Interventions: What Books Children Must Read this Summer Vacation   |  Policy Indications: CUET Mandatory for Central Universities  |  Teacher Insights: Classroom Dialogue for a Better World  |  Rajagiri Round Table: Is Time Ripe for Entrepreneurial Universities in India?  |  Life Inspirations: How to Overcome Fear of Public Speaking  |  Parent Interventions: Wide Ranging Problems of Preterm Infants  |  Technology Inceptions: Smart IoT-based, indigenously-developed, ICU Ventilator “Jeevan Lite” Launched  |  Parent Interventions: Meditation Reduces Guilt Feeling  |  
August 30, 2019 Friday 10:54:16 AM IST

Harvesting energy from knee

Science Innovations

A group of American Institute of Physics researchers has developed a way to power small devices by walking.An energy harvester, attached to the wearer's knee, generates 1.6 microwatts of power while the wearer walks without any increase in effort. The energy is enough to power small electronics such as health monitoring equipment and GPS devices. 

The researchers used a special smart macrofibre material, which generates energy from any sort of bending it experiences, to create a slider-crank mechanism - similar to what drives a motor. The authors chose to attach the device to the knee due to the knee joint's large range of motion, compared to most other human joints. These harvesters can harvest energy directly from large deformations.


Due to the continuous back-and-forth motion the material will encounter when the wearer walks, every time the knee flexes, the device bends and generates electricity. This means the harvester can capture biomechanical energy through the natural motion of the human knee.This energy harvester could promote the development of self-powered wearable devices.


Comments