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Polarization Induced Electro-Functionalization of Pore Walls: A Contactless Technology
- Source :
- Biosensors, Biosensors, MDPI, 2019, 9 (4), pp.E121. ⟨10.3390/bios9040121⟩, Biosensors, 2019, 9 (4), pp.E121. ⟨10.3390/bios9040121⟩, Biosensors, Vol 9, Iss 4, p 121 (2019)
- Publication Year :
- 2019
- Publisher :
- HAL CCSD, 2019.
-
Abstract
- This review summarizes recent advances in micro- and nanopore technologies with a focus on the functionalization of pores using a promising method named contactless electro-functionalization (CLEF). CLEF enables the localized grafting of electroactive entities onto the inner wall of a micro- or nano-sized pore in a solid-state silicon/silicon oxide membrane. A voltage or electrical current applied across the pore induces the surface functionalization by electroactive entities exclusively on the inside pore wall, which is a significant improvement over existing methods. CLEF’s mechanism is based on the polarization of a sandwich-like silicon/silicon oxide membrane, creating electronic pathways between the core silicon and the electrolyte. Correlation between numerical simulations and experiments have validated this hypothesis. CLEF-induced micro- and nanopores functionalized with antibodies or oligonucleotides were successfully used for the detection and identification of cells and are promising sensitive biosensors. This technology could soon be successfully applied to planar configurations of pores, such as restrictions in microfluidic channels.
- Subjects :
- Silicon
Materials science
[SDV.BIO]Life Sciences [q-bio]/Biotechnology
lcsh:Biotechnology
Clinical Biochemistry
chemistry.chemical_element
Nanotechnology
Biosensing Techniques
Review
02 engineering and technology
010402 general chemistry
01 natural sciences
electro-functionalization
Nanopores
lcsh:TP248.13-248.65
Electric Impedance
micropore
nanopore
Polarization (electrochemistry)
Silicon oxide
contactless
[SDV.MHEP] Life Sciences [q-bio]/Human health and pathology
CLEF
[SCCO.NEUR]Cognitive science/Neuroscience
[SCCO.NEUR] Cognitive science/Neuroscience
technology, industry, and agriculture
Membranes, Artificial
Electrochemical Techniques
General Medicine
Microporous material
021001 nanoscience & nanotechnology
0104 chemical sciences
[SDV.BIO] Life Sciences [q-bio]/Biotechnology
Nanopore
Membrane
chemistry
Surface modification
biosensing
0210 nano-technology
Biosensor
[SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Subjects
Details
- Language :
- English
- ISSN :
- 20796374
- Database :
- OpenAIRE
- Journal :
- Biosensors, Biosensors, MDPI, 2019, 9 (4), pp.E121. ⟨10.3390/bios9040121⟩, Biosensors, 2019, 9 (4), pp.E121. ⟨10.3390/bios9040121⟩, Biosensors, Vol 9, Iss 4, p 121 (2019)
- Accession number :
- edsair.doi.dedup.....a3e22794273b9ca9511ecafe2de25734