Darling Kris A, Lewis Reynolds C, Leonard Donovan N, Duscher Gerd, Scattergood Ronald O, Koch Carl C
Nanotechnology. 2008 Apr 2;19(13):135603. doi: 10.1088/0957-4484/19/13/135603. Epub 2008 Feb 26.
The inexpensive combination of cryogenically milled Cu(3)Ge powders sonochemically processed in a standard ultrasonic cleaner has led to the prototype of a heretofore undescribed class of material. This prototype is a nanostructured composite composed of 4.5 nm diameter Cu nanocrystals embedded in a three-dimensional (3D) amorphous CuGeO(3) polyhedron web matrix. The diameters of the wires comprising the matrix are typically 5-15 nm. Complete structural and compositional characterization is reported to provide additional insight and firm designation on the observation of this previously undescribed class of material. The large surface to volume ratio of these nanoweb composites may offer unique advantages based on altered optical or electronic and magnetic properties. For example, quantum confinement of the Cu dots in the amorphous 3D nanowebs is possible. Nanostructures in general have altered properties compared to those of bulk materials and the same is expected in nanostructured composites.
在标准超声清洗器中进行声化学处理的低温研磨Cu₃Ge粉末的廉价组合，造就了一种迄今未被描述过的材料类型的原型。该原型是一种纳米结构复合材料，由嵌入三维（3D）非晶态CuGeO₃多面体网状基质中的直径为4.5纳米的铜纳米晶体组成。构成基质的线的直径通常为5 - 15纳米。据报道，已完成结构和成分的全面表征，以便对这种先前未被描述过的材料类型的观察提供更多见解和确切命名。这些纳米网状复合材料的大表面积与体积比可能基于改变的光学、电子和磁性能而具有独特优势。例如，非晶态3D纳米网中的铜点可能存在量子限制效应。一般来说，纳米结构与块状材料相比具有改变的性能，纳米结构复合材料预计也是如此。
