Strategies for patterning biomolecules with dip-pen nanolithography
Chien-Ching Wu1, David N Reinhoudt, Cees Otto
1Laboratory for Supramolecular Chemistry and Technology, MESA+ Institute for Nanotechnology, University of Twente, P.O. Box 217, 7500AE, Enschede, The Netherlands.
Small (Weinheim an Der Bergstrasse, Germany)
|March 15, 2011
Summary
Dip-pen nanolithography (DPN) fabricates nanoscale patterns using atomic force microscopy (AFM). This review covers chemical strategies for creating biomolecular patterns with DPN, detailing direct and indirect methods.
Area of Science:
- Materials Science
- Nanotechnology
- Biotechnology
Background:
- Dip-pen nanolithography (DPN) is an atomic force microscopy (AFM)-based technique for nanoscale fabrication.
- DPN can create patterns with feature sizes as small as 15 nm.
- It utilizes a water meniscus for molecule transfer from an AFM tip to a substrate.
Purpose of the Study:
- To review the development of DPN over the past decade.
- To present chemical strategies for fabricating biomolecular patterns using DPN.
- To classify these strategies into direct and indirect methodologies.
Main Methods:
- Review of literature on DPN development and chemical strategies.
- Classification of DPN methodologies into direct and indirect approaches.
- Discussion of tip-functionalization strategies for biomolecule patterning.
Main Results:
- DPN has advanced significantly in the last decade.
- Various chemical approaches enable the fabrication of micro- and nano-arrays of biomolecules.
- Direct and indirect DPN methods, along with tip-functionalization, are key strategies.
Conclusions:
- DPN is a versatile technique for nanoscale biomolecular patterning.
- Chemical strategies are crucial for successful biomolecule transfer and array fabrication.
- Understanding direct and indirect DPN approaches aids in optimizing pattern generation.
