"I built each of these machines," the man said, noting, "if I bought them, they'd cost over a quarter-million to buy." ...

A firefighter-built smoke detector uses silent strobe lights to help firefighters locate and rescue pets during house fires.

Abstract: In this letter, we introduce a self-calibrating electrochemical sensor for water acetaminophen (ACT) detection. The sensor is built upon a graphite pencil lead (GPL) electrode modified with ...

Abstract: Ammonia is a toxic and flammable gas, and chemical resistance sensors have great potential in practical ammonia monitoring applications. For scenarios where there is a lack of circuit wired ...