Two Michiganians were among more than 30 entrepreneurs that attended the Obama administration's Demo Day on Tuesday at the White House with President Barack Obama to show off their nascent ideas, the Detroit Free Press reports.

Pashon Murray/Facebook photo
Todd Spangler of the Free Press reports:
Ann Marie Sastry of Ann Arbor's Sakti3, which makes solid-state batteries with double the energy density of today's technology, and Pashon Murray, whose Detroit Dirt company takes food waste from General Motors' headquarters, the Detroit Zoo and elsewhere and composts it into rich soil, were among the groups that got to pitch their products to invited passers-by in the Executive Mansion.
For some, like Sastry, a 47-year-old former University of Michigan professor, that meant meeting President Barack Obama, who asked her whether the company had succeeded in solving the problems faced in developing nanotechology needed for the next generation of batteries which could power cell phones, computers, vacuum cleaners — and hopefully, someday, cars.
"We just have to scale it up," said a beaming Sastry.