 In 2007 , Nanotek Instruments spun off Angstron Materials for the purpose of mass @-@ producing graphene materials . Angstron Materials , also located in Dayton , is currently the world 's largest producer of nano graphene platelets . Angstron 's graphene platelets are being used in multiple research areas including energy storage , thermal management , nanocomposites , transparent conducting films , sensor , and lithium ion batteries . 
