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SOLAR DAILY
Scientists create most powerful micro-scale bio-solar cell yet
by Staff Writers
Binghamton NY (SPX) Oct 18, 2017


Binghamton University researcher Seokheun 'Sean' Choi is developing new ways to create electricity using bacteria. His small, paper-based batteries and microbial fuel cells could one day replace oil, coal or even solar energy.

Researchers at Binghamton University, State University of New York have created a micro-scale biological solar cell that generates a higher power density for longer than any existing cell of its kind.

A microfluidic lab-on-a-chip system that generates its own power is essential for stand-alone, independent, self-sustainable point-of-care diagnostic devices to work in limited-resource and remote regions, said Binghamton University Electrical and Computer Science Assistant Professor Seokheun Choi. Miniaturized biological solar cells (or micro-BSCs) can be the most suitable power source for those applications because the technique resembles the earth's natural ecosystem.

"Micro-BSCs can continuously generate electricity from microbial photosynthetic and respiratory activities over day-night cycles, offering a clean and renewable power source with self-sustaining potential," said Choi.

"However, the promise of this technology has not been translated into practical applications because of its relatively low power and current short lifetimes."

Choi and PhD candidate Lin Liu created a microscale microfluidic biological solar cell that can attain high electrical power and long-term operational capability, which will provide a practical and sustainable power supply for lab-on-a-chip applications. The bio-solar cell generated the highest power density for the longest time among any existing micro-scale bio-solar cells.

"The device will release biological photo-energy conversion technology from its restriction to conceptual research and advance its translational potential toward practical and sustainable power applications for point-of-care diagnostics to work independently and self-sustainably in limited-resource and remote regions," added Choi.

Research Report: "Self-sustainable, high-power-density bio-solar cells for lab-on-a-chip applications"

SOLAR DAILY
Sandia scientists find the optimal way to mop up surplus solar flux on CSP towers
Almeria, Spain (SPX) Oct 16, 2017
Excess solar flux could be harnessed and used to generate additional electricity at a tower CSP plant, by cladding part of the tower containing the receiver with photovoltaic (PV) panels, according to Sandia scientist Cliff Ho. He found that adding PV on the tower could generate over 10 MW, or 10% of the total capacity of a 100 MW CSP plant. One use for additional direct electric power fro ... read more

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