“Polymer Pen” Nanolithography

J. Wu

Phys. Dept.

references: Fengwei Huo, Zijian Zheng, Gengfeng Zheng, Louise R. Giam, Hua Zhang, and Chad A. Mirkin Science, 321, 1658 (2008).

NSE 203

PenPen

InkInk

SubstrateSubstrate

An old wisdom: Dip-Pen technologyAn old wisdom: Dip-Pen technology

More than 4000 years ago… On Jan, 1999

PatternsPatterns

Dip-pen lithography is straightforward. Any draw back?

Lithography:

Parallel replication

Serial replication

Photolithography

Contact printing

Nanoimprint lithography

E-beam lithography

Ion-beam lithography

Advantage: Time effective, economic

Dip-pen lithography

?

The secret: multi-identical-pensThe secret: multi-identical-pens

~11,000,000 pens

Second Advantage: size controllableSecond Advantage: size controllable

Pattern size controlled by the pressure on polymer.

Chinese calligraphy

Massive production of patterns

2008 Beijing Olympic logo

The total time required is less than 40 mins.