Nanofluidic diodes based on asymmetric bio-inspired surface coatings in straight glass nanochannels

Zhou, Lingyun; Eden, Alexander; Chou, Kuang-Hua; Huber, David; Pennathur, Sumita

doi:10.1039/d3fd00074e

Faraday Discuss.

2023

DOI: 10.1039/d3fd00074e

|View full text |Cite

Nanofluidic diodes based on asymmetric bio-inspired surface coatings in straight glass nanochannels

Lingyun Zhou

Alexander Eden

Kuang-Hua Chou

et al.

Abstract: In this study, we present nanofluidic diodes fabricated from straight glass nanochannels and functionalized using bio-inspired polydopamine (PDA) and poly-L-lysine (PLL) coatings. The resulting PDA coatings are shown to be...

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2024

Publication Types

Select...

Article2

Relationship

Self Cite0

Independent2

Authors

Journals

Cited by 2 publications

References 31 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Coupling Charge‐Regulated Interfacial Chemistry to Electrokinetic Ion Transport in Bipolar SiO₂‐Al₂O₃ Nanofluidic Diodes

Eden,

Pennathur

2024

Adv Materials Inter

View full text Add to dashboard Cite

Due to the surface‐dominant nature of electrokinetic ion transport in confined geometries, ionic currents in nanofluidic channels are fundamentally governed by the interfacial chemistry of the constituent substrates. In this work, the intrinsic coupling between charge‐regulated oxide surfaces and local changes in concentration and pH induced during the operation of bipolar nanofluidic diodes is numerically explored. Using a heterogeneous SiO2‐Al2O3 nanochannel as a representative example, field‐dependent ion accumulation and depletion effects are shown to have a marked effect on the local surface chemistry and resulting charge density of the amphoteric Al2O3 surface in particular. While the SiO2 surface tends to remain relatively indifferent to the presence of an applied potential due to its low point of zero charge (PZC), the comparatively high PZC of Al2O3 renders it much more susceptible to the extent of ion accumulation and depletion events which drive localized concentration and pH changes. Including this surface coupling in models can be necessary to capture the true behavior of real‐world devices; comparison with a fixed‐charge model demonstrates that only a fully coupled model can quantitatively reproduce reported experimental current measurements in heterogeneous SiO2‐Al2O3 nanochannels, the limiting behavior of which is revealed to stem from this surface‐to‐bulk coupling.

show abstract

Coupling Charge‐Regulated Interfacial Chemistry to Electrokinetic Ion Transport in Bipolar SiO₂‐Al₂O₃ Nanofluidic Diodes

Eden,

Pennathur

2024

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

Nanofluidic Manipulation of Single Nanometric Objects: Current Progress, Challenges, and Future Opportunities

Chantipmanee,

2024

Engineering

View full text Add to dashboard Cite

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Nanofluidic diodes based on asymmetric bio-inspired surface coatings in straight glass nanochannels

Abstract: In this study, we present nanofluidic diodes fabricated from straight glass nanochannels and functionalized using bio-inspired polydopamine (PDA) and poly-L-lysine (PLL) coatings. The resulting PDA coatings are shown to be...

Cited by 2 publications

References 31 publications

Coupling Charge‐Regulated Interfacial Chemistry to Electrokinetic Ion Transport in Bipolar SiO₂‐Al₂O₃ Nanofluidic Diodes

Coupling Charge‐Regulated Interfacial Chemistry to Electrokinetic Ion Transport in Bipolar SiO₂‐Al₂O₃ Nanofluidic Diodes

Nanofluidic Manipulation of Single Nanometric Objects: Current Progress, Challenges, and Future Opportunities

Contact Info

Product

Resources

About

Nanofluidic diodes based on asymmetric bio-inspired surface coatings in straight glass nanochannels

Abstract: In this study, we present nanofluidic diodes fabricated from straight glass nanochannels and functionalized using bio-inspired polydopamine (PDA) and poly-L-lysine (PLL) coatings. The resulting PDA coatings are shown to be...

Cited by 2 publications

References 31 publications

Coupling Charge‐Regulated Interfacial Chemistry to Electrokinetic Ion Transport in Bipolar SiO2‐Al2O3 Nanofluidic Diodes

Coupling Charge‐Regulated Interfacial Chemistry to Electrokinetic Ion Transport in Bipolar SiO2‐Al2O3 Nanofluidic Diodes

Nanofluidic Manipulation of Single Nanometric Objects: Current Progress, Challenges, and Future Opportunities

Contact Info

Product

Resources

About

Coupling Charge‐Regulated Interfacial Chemistry to Electrokinetic Ion Transport in Bipolar SiO₂‐Al₂O₃ Nanofluidic Diodes

Coupling Charge‐Regulated Interfacial Chemistry to Electrokinetic Ion Transport in Bipolar SiO₂‐Al₂O₃ Nanofluidic Diodes