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features

Research: Collect wind power as you move

Researchers in China have designed a tiny device that can scavenge wind energy from the breeze you make when you walk or run

Published in Fit Tech 2021 issue 1

Most of the wind available on land is too gentle to push commercial wind turbine blades, but now researchers in China have designed a kind of “tiny wind turbine” that can scavenge wind energy from breezes as little as those created by a brisk walk. The method, presented in the journal Cell Reports Physical Science, is a low-cost and efficient way of collecting light breezes as a micro-energy source.

The new device is not technically a turbine. It is a nanogenerator made of two plastic strips in a tube that flutter or clap together when there is airflow. Like rubbing a balloon to your hair, the two plastics become electrically charged after being separated from contact, a phenomenon called the triboelectric effect. But instead of making your hair stand up like Einstein’s, the electricity generated by the two plastic strips is captured and stored.

“You can collect all the breeze in your everyday life,” says senior author Ya Yang of Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences. “We once placed our nanogenerator on a person’s arm, and a swinging arm’s airflow was enough to generate power.”

Allows sweat to evaporate
A breeze as gentle as 1.6 m/s (3.6 mph) was enough to power the triboelectric nanogenerator designed by Yang and his colleagues. The nanogenerator performs at its best when wind velocity is between 4 to 8 m/s (8.9 to 17.9 mph), a speed that allows the two plastic strips to flutter in sync. The device also has a high wind-to-energy conversion efficiency of 3.23 per cent, a value that exceeds previously reported performances on wind energy scavenging. Currently, the research team’s device can power up 100 LED lights and temperature sensors.

“Our intention isn’t to replace existing wind power generation technology. Our goal is to solve the issues that the traditional wind turbines can’t solve,” says Yang. “Unlike wind turbines that use coils and magnets, where the costs are fixed, we can pick and choose low-cost materials for our device. Our device can also be safely applied to nature reserves or cities because it doesn’t have the rotating structures.”

Big goal, small device
In the past, Yang and his colleagues have designed a nanogenerator as small as a coin, but he wants to make it even tinier and more compact with higher efficiency. In the future, Yang and his colleagues would like to combine the device to small electronic devices such as phones, to provide sustainable electric power.

• For more research using triboelectric nanogenerator technology, see Fit Tech Issue 2 2020: Create your own energy

Sign up here to get Fit Tech's weekly ezine and every issue of Fit Tech magazine free on digital.
More features
Editor's letter

Two-way coaching

Content providers have been hugely active in the fit tech market since the start of the pandemic. We expect the industry to move on from delivering these services on a ‘broadcast-only’ basis as two-way coaching becomes the new USP
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Laurent Petit

Co-founder, Active Giving
The future of sports and fitness are dependent on the climate. Our goal is to positively influence the future of our planet by instilling a global vision of wellbeing and a sense of collective action
people

Adam Zeitsiff

CEO, Intelivideo
We don’t just create the technology and bail – we support our clients’ ongoing hybridisation efforts
people

Anantharaman Pattabiraman

CEO and co-founder, Auro
When you’re undertaking fitness activities, unless you’re on a stationary bike, in most cases it’s not safe or necessary to be tied to a screen, especially a small screen
people

Mike Hansen

Managing partner, Endorphinz
We noticed a big gap in the market – customers needed better insights but also recommendations on what to do, whether that be customer acquisition, content creation, marketing and more
interview

Mathieu Letombe

At Withings, we’re improving the way both patients and the medical community are able to monitor, identify and understand health levels and issues

Refining augmented reality

London boutique The Refinery has created an avatar-led digital fitness offering called ALFI, which utilises augmented reality (AR) to demonstrate movements. Zoe Bertali, one of the co-founders of the gym, tells us more

Jessica Ennis-Hill: founder of Jennis

Jessica Ennis-Hill is on a mission to close the gender data gap in health research. Her app, Jennis CycleMapping, is designed to help women understand their cycles and how to train during each different phase. Steph Eaves speaks to Ennis-Hill to find out exactly how it works

How usable is your product?

Your fit tech product might be a game changer, solving problems or creating new possibilities for clients, but none of this will matter if it’s not easy and enjoyable to use. Industrial designer Nick Chubb explains why usability is key, and the factors to consider when designing your new product

Put on your red light

Red light therapy promises a variety of benefits, including better recovery, skin rejuvenation and increased energy, but is it all too good to be true? Fit Tech spoke to Bryan Gohl and James Strong of Red Light Rising, and Wes Pfiffner of Joovv to find out more
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Monitoring mental health

New technology uses advanced machine learning to monitor patients’ mental health between visits to their medical providers
people

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With Facebook paid online events, publishers can charge viewers to attend a video livestream on their Facebook pages or a third party video service
people

Andy Etches

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Rezzil was able to have an injured player learning his new manager's philosophy, positioning and playing style – all from a seated position
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Featured supplier: Surge integrates Fisikal with HubSpot to drive business efficiencies and grow revenue
As Surge expands its offer with the launch of a third dedicated Electronic Muscle Stimulation (EMS) studio this summer – this time in Fleet Street, London – the brand reflects on the vital role of its estate wide digital ecosystem, created in partnership with Fisikal, designed to drive business efficiencies and commercial success.
Featured supplier: Are traditional gyms going to war with smart gyms?
CEO of Orbit4, Daniel Jones, says: “There’s no reason traditional gyms and smart gyms can’t live in harmony. With a little reorganisation and education, there’s a really bright future for all gyms.”
Company profile: Hussle
Hussle exists for two reasons: To increase opportunities for people to engage in physical activity ...
Company profile: REGUPOL BSW GmbH
REGUPOL is one of the leading suppliers of sports and safety flooring, anti-slip mats for ...
CPASE creates unforgettable luxury member experience at new boutique club with Technogym
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Get Fit Tech
Sign up for the free digital edition of Fit Tech magazine and the free weekly Fit Tech ezine
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Exercise equipment
Power Plate: Exercise equipment
Management software
Premier Software Solutions: Management software
Flooring
Total Vibration Solutions / TVS Sports Surfaces: Flooring
Wearable technology solutions
MyZone: Wearable technology solutions
Fitness equipment
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features

Research: Collect wind power as you move

Researchers in China have designed a tiny device that can scavenge wind energy from the breeze you make when you walk or run

Published in Fit Tech 2021 issue 1

Most of the wind available on land is too gentle to push commercial wind turbine blades, but now researchers in China have designed a kind of “tiny wind turbine” that can scavenge wind energy from breezes as little as those created by a brisk walk. The method, presented in the journal Cell Reports Physical Science, is a low-cost and efficient way of collecting light breezes as a micro-energy source.

The new device is not technically a turbine. It is a nanogenerator made of two plastic strips in a tube that flutter or clap together when there is airflow. Like rubbing a balloon to your hair, the two plastics become electrically charged after being separated from contact, a phenomenon called the triboelectric effect. But instead of making your hair stand up like Einstein’s, the electricity generated by the two plastic strips is captured and stored.

“You can collect all the breeze in your everyday life,” says senior author Ya Yang of Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences. “We once placed our nanogenerator on a person’s arm, and a swinging arm’s airflow was enough to generate power.”

Allows sweat to evaporate
A breeze as gentle as 1.6 m/s (3.6 mph) was enough to power the triboelectric nanogenerator designed by Yang and his colleagues. The nanogenerator performs at its best when wind velocity is between 4 to 8 m/s (8.9 to 17.9 mph), a speed that allows the two plastic strips to flutter in sync. The device also has a high wind-to-energy conversion efficiency of 3.23 per cent, a value that exceeds previously reported performances on wind energy scavenging. Currently, the research team’s device can power up 100 LED lights and temperature sensors.

“Our intention isn’t to replace existing wind power generation technology. Our goal is to solve the issues that the traditional wind turbines can’t solve,” says Yang. “Unlike wind turbines that use coils and magnets, where the costs are fixed, we can pick and choose low-cost materials for our device. Our device can also be safely applied to nature reserves or cities because it doesn’t have the rotating structures.”

Big goal, small device
In the past, Yang and his colleagues have designed a nanogenerator as small as a coin, but he wants to make it even tinier and more compact with higher efficiency. In the future, Yang and his colleagues would like to combine the device to small electronic devices such as phones, to provide sustainable electric power.

• For more research using triboelectric nanogenerator technology, see Fit Tech Issue 2 2020: Create your own energy

Sign up here to get Fit Tech's weekly ezine and every issue of Fit Tech magazine free on digital.
More features
Editor's letter

Two-way coaching

Content providers have been hugely active in the fit tech market since the start of the pandemic. We expect the industry to move on from delivering these services on a ‘broadcast-only’ basis as two-way coaching becomes the new USP
people

Laurent Petit

Co-founder, Active Giving
The future of sports and fitness are dependent on the climate. Our goal is to positively influence the future of our planet by instilling a global vision of wellbeing and a sense of collective action
people

Adam Zeitsiff

CEO, Intelivideo
We don’t just create the technology and bail – we support our clients’ ongoing hybridisation efforts
people

Anantharaman Pattabiraman

CEO and co-founder, Auro
When you’re undertaking fitness activities, unless you’re on a stationary bike, in most cases it’s not safe or necessary to be tied to a screen, especially a small screen
people

Mike Hansen

Managing partner, Endorphinz
We noticed a big gap in the market – customers needed better insights but also recommendations on what to do, whether that be customer acquisition, content creation, marketing and more
interview

Mathieu Letombe

At Withings, we’re improving the way both patients and the medical community are able to monitor, identify and understand health levels and issues

Refining augmented reality

London boutique The Refinery has created an avatar-led digital fitness offering called ALFI, which utilises augmented reality (AR) to demonstrate movements. Zoe Bertali, one of the co-founders of the gym, tells us more

Jessica Ennis-Hill: founder of Jennis

Jessica Ennis-Hill is on a mission to close the gender data gap in health research. Her app, Jennis CycleMapping, is designed to help women understand their cycles and how to train during each different phase. Steph Eaves speaks to Ennis-Hill to find out exactly how it works

How usable is your product?

Your fit tech product might be a game changer, solving problems or creating new possibilities for clients, but none of this will matter if it’s not easy and enjoyable to use. Industrial designer Nick Chubb explains why usability is key, and the factors to consider when designing your new product

Put on your red light

Red light therapy promises a variety of benefits, including better recovery, skin rejuvenation and increased energy, but is it all too good to be true? Fit Tech spoke to Bryan Gohl and James Strong of Red Light Rising, and Wes Pfiffner of Joovv to find out more
interview

Kilian Saekel

By putting focus on tapping different lights and sounds while doing gruelling planks, you stop focusing on the pain

Adrian Hon

Zombies, Run! is one of the most enduring fitness apps, with half a million users getting active while engaging in ‘missions’ against the zombie apocalypse. Its co-creator spoke to Steph Eaves about the power of story

Digital community

Matt Stebbings of SLT Group talks about the creation of their Community Portal, a new platform that aims to help anyone to get active, whether that’s inside or outside of SLT’s facilities

Funxtion: A vital connection

NonStop Gym, Switzerland’s no frills gym chain, has appointed FunXtion to create its member training app

Monitoring mental health

New technology uses advanced machine learning to monitor patients’ mental health between visits to their medical providers
people

Devi Mahadevia

Facebook director of sports and fitness partnerships
With Facebook paid online events, publishers can charge viewers to attend a video livestream on their Facebook pages or a third party video service
people

Andy Etches

Founder and sports director, Rezzil
Rezzil was able to have an injured player learning his new manager's philosophy, positioning and playing style – all from a seated position
interview

Preston Lewis, Black Box VR

We’ve had to create training experiences that show users how to grab handles in the virtual world that are mapped to our real-world machine
More features
Technogym
Technogym