Lidar, or light detection and ranging systems, uses lasers to detect objects, their distance, and velocity. Current lidar systems are bulky, but that may change with new acoustic lidar technology developed by Stanford engineers. They created a compact lidar system using lithium niobate coated with electrons to modulate light millions of times a second, capturing an object’s 3D shape. The lithium niobate changes shape when electricity passes through the electrodes, which allows it to modulate light so quickly. Further developments in this tech could lead to 3D smartphone cameras. Read full article here
Societal Issues
To curb drug deaths, communities turn to Reddit, texts and wastewater
With drug overdose deaths on the rise, authorities are attempting to curb the epidemic by tracking and sharing information in real time. In one unique effort, a nonprofit in New York City is using drug-testing equipment and stamping or marking habits of dealers to identify drug batches that may endanger users. Other approaches are also being used, such as monitoring drug-related chatter on Reddit and analyzing local wastewater for opioid and other drug levels. With the combination of these efforts, researchers hope to put a dent in the opioid crisis and reduce overdose deaths. Read full article here
Merv
June 1, 2023
