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美国在无机非金属材料、高分子材料以及生物医用材料等多个领域取得进展,3D打印技术的发展引发争议。无机非金属材料:密歇根理工大学开发出一种低成本阴极材料,被称为蜂窝状3D石墨烯,合成过程既不困难也不昂贵,是制造阴极的理想材料,能够取代此前在染料敏化太阳能电池生产中所必需的贵金属铂。莱斯大学通过计算发现,一种新形式的碳具有极高的强度和硬度,甚至超过了石墨烯和钻石。这种新材料被称为碳炔,是碳的一种同素异形体,除无与伦比的强度
The United States made progress in many fields such as inorganic non-metallic materials, polymer materials and bio-medical materials, and the development of 3D printing technology is controversial. Inorganic non-metallic materials: Michigan Technological University to develop a low-cost cathode material, known as honeycomb-shaped 3D graphene, the synthesis process is neither difficult nor expensive, is the ideal material for the manufacture of cathode can replace the previous dye-sensitized solar Precious metal platinum necessary for battery production. Rice University found by calculation that a new form of carbon has very high strength and hardness, even more than graphene and diamonds. This new material, known as acetylene, is a carbon allotrope that, in addition to unparalleled strength