Dip-Pen Nanolithography(DPN): from Micro/Nano-patterns to Biosensing

Area of Science:

• Materials Science
• Nanotechnology
• Biomedical Engineering

Background:

• Dip-pen nanolithography (DPN) is a versatile surface modification technique.
• DPN enables precise writing of micro/nano-array patterns on various substrates.
• Its high throughput, resolution, and registration make it suitable for biological detection.

Purpose of the Study:

• To review the technological evolution of DPN and its advanced derivatives.
• To highlight DPN-enabled versatile sensing patterns for biosensing applications.
• To discuss the potential of DPN in fabricating advanced biochips.

Main Methods:

• Overview of DPN technological advancements.
• Analysis of DPN-enabled sensing patterns with multiple compositions and structures.
• Evaluation of DPN-based biosensor performance.

Main Results:

• DPN allows for uniform, reproducible, and large-area array pattern fabrication.
• DPN-based biosensors exhibit high sensitivity, selectivity, and fast response.
• Successful target analyte detection and specific cellular recognition were demonstrated.

Conclusions:

• DPN is a powerful tool for creating sophisticated biosensing platforms.
• DPN-based biosensors show significant potential for molecular and cellular level detection.
• DPN technology offers opportunities for multiplexed, programmable, and commercial array-based sensing biochips.