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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2024
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| Subjects: | |
| Online Access: | https://arxiv.org/abs/2402.04116 |
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| _version_ | 1866917635818520576 |
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| author | Dogru-Yuksel, Itir Bakis Mosk, Allard P. Faez, Sanli |
| author_facet | Dogru-Yuksel, Itir Bakis Mosk, Allard P. Faez, Sanli |
| contents | We present a facile desktop fabrication method for origami-based nano-gap indium tin oxide (ITO) electrokinetic particle traps, providing a simplified approach compared to traditional lithographic techniques and effectively trapping of nanoparticles. Our approach involves bending ITO thin films on optically transparent polyethylene terephthalate (PET), creating an array of parallel nano-gaps. By strategically introducing weak points through cut-sharp edges, we successfully controlled the spread of nano-cracks. A single crack spanning the constriction width and splitting the conductive layers forms a nano-gap that can effectively trap small nanoparticles after applying an alternating electric potential across the nanogap. We analyze the conditions for reversible trapping and optimal performance of the nano-gap ITO electrodes with optical microscopy and electrokinetic impedance spectroscopy. Our findings highlight the potential of this facile fabrication method for the use of ITO at active electro-actuated traps in microfluidic systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_04116 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Origami Nano-gap Electrodes for Reversible Nanoparticle Trapping Dogru-Yuksel, Itir Bakis Mosk, Allard P. Faez, Sanli Applied Physics Soft Condensed Matter We present a facile desktop fabrication method for origami-based nano-gap indium tin oxide (ITO) electrokinetic particle traps, providing a simplified approach compared to traditional lithographic techniques and effectively trapping of nanoparticles. Our approach involves bending ITO thin films on optically transparent polyethylene terephthalate (PET), creating an array of parallel nano-gaps. By strategically introducing weak points through cut-sharp edges, we successfully controlled the spread of nano-cracks. A single crack spanning the constriction width and splitting the conductive layers forms a nano-gap that can effectively trap small nanoparticles after applying an alternating electric potential across the nanogap. We analyze the conditions for reversible trapping and optimal performance of the nano-gap ITO electrodes with optical microscopy and electrokinetic impedance spectroscopy. Our findings highlight the potential of this facile fabrication method for the use of ITO at active electro-actuated traps in microfluidic systems. |
| title | Origami Nano-gap Electrodes for Reversible Nanoparticle Trapping |
| topic | Applied Physics Soft Condensed Matter |
| url | https://arxiv.org/abs/2402.04116 |