We demonstrate that the atom chain structure of Te allows it to be exfoliated as ultra-thin flakes and nanowires. Atomic force microscopy of exfoliated Te shows that thicknesses of 1–2 nm and widths below 100 nm can be exfoliated with this method. The Raman modes of exfoliated Te match those of bulk Te, with a slight shift (4 cm−1) due to a hardening of the A1 and E modes. Polarized Raman spectroscopy is used to determine the crystal orientation of exfoliated Te flakes. These experiments establish exfoliation as a route to achieve nanoscale trigonal Te while also demonstrating the potential for fabrication of single atom chains of Te.

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The c r e e p r e s i s t a n c e of various uranium binary alloys was investigated r at 1500'and 1800'F in vacuum. T e s t s were made on alloys of uranium with b y-l l i u m , columbium, mol-ybaenum, tantalum, titanium, and zirc-oni-um and on mol-ybdenum-U02 composites.

Addition of titanium generally improved workability, increased hot hardness, and promoted oxidation resistance. Some exceptions to this pattern were noted: ike hardest alloy at 1600 F, niobium-S w/o zirconium, softened with added titanium, and the oxidation resistance of the niobiuM'S w/o molybdenum and the niobium-5 w/o vanadium alloys was not increased by additions of titanium.

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