Tag Archive for: caltech

The FPSC on Gao’s wearable sweat sensor has a record-breaking PCE exceeding 31 percent under indoor light illumination.

New Caltech wearable sensor sets record for solar power efficiency

Sweat, like blood, can tell us a lot about a person’s health. And conveniently, it’s a lot less invasive to collect.

This is the premise behind the wearable sweat sensors developed by Caltech’s Wei Gao, assistant professor of medical engineering, Heritage Medical Research Institute Investigator, and Ronald and JoAnne Willens Scholar.

Over the past five years, Gao has steadily added features to his wearables, making them capable of reading out levels of salts, sugars, uric acid, amino acids, and vitamins as well as more complex molecules like C-reactive protein that can provide timely assessment of certain health risks. Most recently, in collaboration with Martin Kaltenbrunner’s group at Johannes Kepler University Linz in Austria, Gao has powered these wearable biosensors with a flexible solar cell.

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Source: Pasadena Now

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Scientists at Caltech say they've successfully transmitted solar energy gathered by a satellite in orbit down to the Earth's surface.

Satellite beams solar power down to earth using microwave transmitter

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In a remarkable first, scientists at the California Institute of Technology say they’ve successfully transmitted solar energy gathered by a satellite in orbit down to the Earth’s surface, as well as to nearby receivers in space.

Dubbed the Microwave Array for Power-transfer Low-orbit Experiment (MAPLE), the experiment was launched back in January as part of an exciting triptych of tests from Caltech’s Space Solar Power Project (SSPP).

“Through the experiments we have run so far, we received confirmation that MAPLE can transmit power successfully to receivers in space,” SSPP co-director Ali Hajmiri said in a press release. “We have also been able to program the array to direct its energy toward Earth, which we detected here at Caltech.”

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Source: yahoo! news

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In January 2023, Caltech Space Solar Power Project is poised to launch into orbit a prototype, dubbed the Space Solar Power Demonstrator.

Caltech to launch space solar power technology demo into orbit in January

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Space solar power provides a way to tap into the practically unlimited supply of solar energy in outer space, where the energy is constantly available without being subjected to the cycles of day and night, seasons, and cloud cover.

The launch, currently slated for early January, represents a major milestone in the project and promises to make what was once science fiction a reality. When fully realized, SSPP will deploy a constellation of modular spacecraft that collect sunlight, transform it into electricity, then wirelessly transmit that electricity over long distances wherever it is needed—including to places that currently have no access to reliable power.

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Source: Caltech

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