Non-lithographic nanofluidic channels with precisely controlled circular cross sections
| Autor: | Yang-Seok Park, Jung Min Oh, Yoon-Kyoung Cho |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Fabrication
Materials science Polydimethylsiloxane General Chemical Engineering Nanoparticle Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Electrospinning 0104 chemical sciences chemistry.chemical_compound Cross section (physics) Nanolithography chemistry Nanofiber 0210 nano-technology Lithography |
| Zdroj: | RSC Advances. 8:19651-19658 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c8ra03496f |
| Popis: | Nanofluidic channels have received growing interest due to their potential for applications in the manipulation of nanometric objects, such as DNA, proteins, viruses, exosomes, and nanoparticles. Although significant advances in nanolithography-based fabrication techniques over the past few decades have allowed us to explore novel nanofluidic transport phenomena and unique applications, the development of new technologies enabling the low-cost preparation of nanochannels with controllable and reproducible shapes and dimensions is still lacking. Thus, we herein report the application of a nanofiber printed using a near-field electrospinning method as a sacrificial mold for the preparation of polydimethylsiloxane nanochannels with circular cross sections. Control of the size and shape of these nanochannels allowed the preparation of nanochannels with channel widths ranging from 70-368 nm and height-to-width ratios of 0.19-1.00. Capillary filling tests confirmed the excellent uniformity and reproducibility of the nanochannels. These results therefore are expected to inspire novel nanofluidic studies due to the simple and low-cost nature of this fabrication process, which allows precise control of the shape and dimensions of the circular cross section. |
| Databáze: | OpenAIRE |
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