نتایج جستجو برای: ultralight high
تعداد نتایج: 2059659 فیلتر نتایج به سال:
The construction of three-dimensional graphene aerogels (GAs) is of great importance owing to their outstanding properties for various applications. Up to now, the combination of ultralow weight and super mechanical strength for GA remains a great challenge. Here we demonstrate the fabrication of cellular GAs by a facile, easily controlled and versatile route, i.e. the chemical reduction of gra...
Designing and making cars differently ± emphasizing ultralight weight, ultralow drag, and integrated design ± can reduce required propulsive power by about two-thirds. This can make direct-hydrogen fuel cells and commercially available compressed-hydrogen-gas tanks practical and affordable even at relatively high early prices. Coordinating such vehicles with deployment of fuel cells in building...
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