Solid-state nanopores
Solid-state nanopores is part of the Nanopore Wiki learning path. Solid-state nanopores are fabricated in inorganic, polymer, glass, or two-dimensional materials and are important for device-oriented nanopore sensing.
Core concepts
- Materials include silicon nitride, silicon dioxide, glass, graphene, and other thin membranes.
- Fabrication controls pore size, thickness, surface chemistry, and device integration.
- Strengths include mechanical stability and chip compatibility.
- Challenges include surface noise, wetting, clogging, and pore-to-pore variability.
Device workflow
| Step | Description |
|---|---|
| 1 | Choose membrane material and pore fabrication method. |
| 2 | Wet and condition the pore before recording. |
| 3 | Measure open-pore conductance and compare with expected geometry. |
| 4 | Use controls to separate target events from surface and clogging artifacts. |
Typical applications
- Particle and polymer sensing.
- Protein and nucleic-acid translocation studies.
- Integrated microfluidic and chip-based devices.
Common pitfalls
- Equating nominal pore diameter with effective sensing diameter.
- Ignoring surface charge, adsorption, and wetting history.
- Comparing solid-state and biological pores without considering thickness and noise.