[Spm] RE: Sharp STM tips

[Paul E. Sheehan]

Don,
	You may want to check out Bob Wolkow's method for making tips
[M. Rezeq, J. Pitters and R.A. Wolkow, J. Chem. Phys. 124 (2006), p.
204716]. He reports the process working with tungsten.

Best regards,
Paul Sheehan.

------
Date: Wed, 21 Oct 2009 13:05:21 -0400
From: "Don Chernoff at ASM" <donc at asmicro.com>
Subject: [Spm] Sharp STM tips

Dear Colleagues:

How would one get or make STM tips with the following characteristics:
-apex has 1 nm radius of curvature (or less) -opening angle (or cone
angle) in the 5 nm above the apex is less than 60 degrees (full angle)
-tip material is stable in air -can achieve atomic resolution

regards,
Don
=============================================
Don Chernoff, Ph.D., President

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