These materials may be familiar to you: they generate the spark in a gas lighter, and motors powered by such materials vibrate some cell phones.
arstechnica.com Among these, consumer electronics, including mobile phones, wrist watches, calculators, and piezoelectric gas lighters cover the maximum share of the global energy harvesting market, followed by military and aerospace-based applications.
www.digitaljournal.com The drives are infused with helium, a gas lighter than air and used in balloons, which improves the life and power efficiency of hard drives.
www.networksasia.net Existing law also prohibits a person or group from releasing outdoors balloons made of electrically conductive material (balloon release) and filled with a gas lighter than air at specified events.
en.wikipedia.org By filling a balloon with a gas lighter than air, such as helium, the balloon can be made to float.
en.wikipedia.org