Temperature-dependence of ink transport during thermal dip-pen nanolithography
- Additional Document Info
- View All
We investigate the control of tip temperature on feature size during dip-pen nanolithography (DPN) of mercaptohexadecanoic acid (MHA) on Au. Heated atomic force microscopy (AFM) probes operated between 25 C and 50 C wrote nanostructures of MHA for various dwell times and tip speeds. The feature size exhibited an exponential dependence on tip temperature with an apparent activation barrier of 165 kJ/mol. Analysis of the ink transfer process shows that, while 1/3 of the barrier is from ink dissolution into the meniscus, the rest reflects the barrier to adsorption onto the growing feature, a process that has been ignored in previous DPN models. 2011 American Institute of Physics.
author list (cited authors)
Chung, S., Felts, J. R., Wang, D., King, W. P., & De Yoreo, J. J.
complete list of authors
Chung, Sungwook||Felts, Jonathan R||Wang, Debin||King, William P||De Yoreo, James J