Your words may not motivate anyone, but they can certainly fill an ultrathin paper microphone with energy. A team of researchers from the Georgia Tech Institute of Technology have developed a rollable, 125 μm thin, paper-based triboelectric nanogenerator (TENG) that can harvest energy from your speech and deliver a maximum power density of 121 mW/m2. What's more important is that this paper-microphone can be used in commercial grade mobile phones to supply some additional power to your device.
Zhong Wang and his colleagues created this paper-microphone using a paper sheet about the size of a postage stamp. They developed an array of tiny holds on the paper using sophisticated lasers and coated it with copper on one side. The paper sheet was then laid over a sheet of teflon and joined it on one of the edges. Sound waves passing through the sheets causes them to vibrate differently and contact each other. This vibration creates an electric charge which can be used to charge a capacitor at the rate of 0.144 V/s.
Image Credit: ACS Nano
The research team says that their concept can be adopted in variety of applications to harvest sound energy. For example the technique can be used in wearable gadgets, military equipments, in jet engines to reduce noise and even a budget-friendly human ear implant. The research was published in ACS Nano Publication. Do check out the source link for further information.
Zhong Wang and his colleagues created this paper-microphone using a paper sheet about the size of a postage stamp. They developed an array of tiny holds on the paper using sophisticated lasers and coated it with copper on one side. The paper sheet was then laid over a sheet of teflon and joined it on one of the edges. Sound waves passing through the sheets causes them to vibrate differently and contact each other. This vibration creates an electric charge which can be used to charge a capacitor at the rate of 0.144 V/s.
Image Credit: ACS Nano
The research team says that their concept can be adopted in variety of applications to harvest sound energy. For example the technique can be used in wearable gadgets, military equipments, in jet engines to reduce noise and even a budget-friendly human ear implant. The research was published in ACS Nano Publication. Do check out the source link for further information.
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