Fabrication and Applications of Solid-State Nanopores

Area of Science:

• Materials Science
• Nanotechnology
• Biophysics

Background:

• Solid-state nanopores are synthetic platforms for biological molecule analysis, offering advantages over biological counterparts.
• They exhibit mechanical robustness, durability, and tunable pore size/geometry.
• Fabrication methods like focused ion beam (FIB) and focused electron beam (FEB) drilling enable nanopore creation.

Purpose of the Study:

• To review current fabrication technologies for solid-state nanopores.
• To discuss the advantages and limitations of each fabrication method.
• To explore advanced strategies for shrinking nanopores to sub-1 nm dimensions.

Main Methods:

• Summarization of reported fabrication technologies for solid-state nanopores.
• Detailed discussion of the pros and cons of each technology.
• Review of advanced shrinking strategies for precise nanopore dimension control.

Main Results:

• Solid-state nanopores can be fabricated with sizes as small as 1.3 nm using various engraving techniques.
• Scalable fabrication strategies are being developed to meet the demand for massively parallel sensing.
• Advanced methods allow for the preparation of nanopores with desired shapes and sizes down to sub-1 nm.

Conclusions:

• Solid-state nanopores are versatile tools for nanoscale applications.
• Fabrication techniques are continuously advancing to achieve smaller and more precise nanopores.
• Key applications include DNA sequencing, single molecule detection, ion transport studies, and nanopatterning.