Tuning parameters of metal ion implantation within a microfluidic channel

Jae-Woo Choi; Samuel Rosset; Muhamed Niklaus; James R. Adleman; Herbert Shea; Demetri Psaltis

doi:10.1117/12.842025

17 February 2010 Tuning parameters of metal ion implantation within a microfluidic channel

Jae-Woo Choi, Samuel Rosset, Muhamed Niklaus, James R. Adleman, Herbert Shea, Demetri Psaltis

Proceedings Volume 7593, Microfluidics, BioMEMS, and Medical Microsystems VIII; 75930D (2010) https://doi.org/10.1117/12.842025
Event: SPIE MOEMS-MEMS, 2010, San Francisco, California, United States

Abstract

Applying electrical fields is a simple and versatile method to manipulate and reconfigure optofluidic devices. Several methods to apply electric fields using electrodes on polymers or in the context of lab-on-a-chip devices exist. In this paper, we utilize an ion-implanted process to pattern electrodes within a fluidic channel made of polydimethylsiloxane (PDMS). Electrode structuring within the channel is achieved by ion implantation at a 40° angle with a metal shadow mask. In previous work using the ion-implantation process, we demonstrated two possible applications in the context of lab-on-a-chip applications. Asymmetric particles were aligned through electro-orientation. Colloidal focusing and concentration was possible with negative dielectrophoresis. In this paper, we discuss the different electrode structures that are possible by changing the channel dimensions. A second parameter of ion implantation dosage prevents the shorting of electrodes on the side wall or top wall of the fluidic channel to the bottom. This allows for floating electrodes on the side wall or top wall. These type of electrodes help prevent electrolysis as the liquid is not in direct contact with the voltage source. Possible applications of the different electrode structures that are possible are discussed.

Citation Download Citation

Jae-Woo Choi, Samuel Rosset, Muhamed Niklaus, James R. Adleman, Herbert Shea, and Demetri Psaltis "Tuning parameters of metal ion implantation within a microfluidic channel", Proc. SPIE 7593, Microfluidics, BioMEMS, and Medical Microsystems VIII, 75930D (17 February 2010); https://doi.org/10.1117/12.842025

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KEYWORDS

Electrodes

Microfluidics

Ion implantation

Metals

Polymers

Bacteria

Ions

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