A Reconfigurable Microfluidic Transmitarray Unit Cell

Date

2013-04-12

Author

Erdil, Emre
Topalli, Kagan
Zorlu, Ozge
Toral, Taylan
YILDIRIM, ENDER
KÜLAH, HALUK
Aydın Çivi, Hatice Özlem

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

186
views

0
downloads

This paper presents a novel microfluidics based approach to develop a reconfigurable circularly polarized transmitarray unit cell. The unit cell comprises double layer nested split ring slots formed as microfluidic channels that can be filled by fluids. Split regions in the slots are realized by injecting liquid metal into the channels. Beam steering is obtained by implementing rotational phase shifting via manipulating the liquid metal in the slots. X-band unit cell prototypes are fabricated on glass substrate carrying a patterned metal film, and the slot channels are formed by Polydimethylsiloxane (PDMS) using soft lithography techniques.

Subject Keywords

Transmitarray, Lens array, Microfluidics, Reconfigurable, Beam steering, Split ring, Circularly polarized, Liquid metal

URI

https://hdl.handle.net/11511/54623

Collections

Department of Electrical and Electronics Engineering, Conference / Seminar

Suggestions

OpenMETU
Core

A Reconfigurable Nested Ring-Split Ring Transmitarray Unit Cell by Microfluidic Technology Erdil, Emre; Topalli, Kagan; Esmaeilzad, Nasim Seyedpour; Zorlu, Ozge; Külah, Haluk; Aydın Çivi, Hatice Özlem (2014-04-11) This paper presents a reconfigurable circularly polarized transmitarray unit cell by microfluidic technology. The unit cell comprises double layer nested ring-split rings formed as microfluidic channels in the Polydimethylsiloxane (PDMS) material using soft lithography techniques. In this structure, only the inner ring has a split region and this region is realized by leaving a gap in the channel filled by an injected liquid metal whereas the outer channel is filled by the liquid metal. Transmission phase o...
Reconfigurable Nested Ring-Split Ring Transmitarray Unit Cell Employing the Element Rotation Method by Microfluidics Erdil, Emre; TOPALLI, KAĞAN; Esmaeilzad, Nasim S.; Zorlu, Ozge; Külah, Haluk; Aydın Çivi, Hatice Özlem (2015-03-01) A continuously tunable, circularly polarized X-band microfluidic transmitarray unit cell employing the element rotation method is designed and fabricated. The unit cell comprises a double layer nested ringsplit ring structure realized as microfluidic channels embedded in Polydimethylsiloxane (PDMS) using soft lithography techniques. Conductive regions of the rings are formed by injecting a liquid metal (an alloy of Ga, In, and Sn), whereas the split region is air. Movement of the liquid metal together with ...
Design and implementation of reconfigurable transmitarray unit cells employing the element rotation method by microfluidics Erdil, Emre; Aydın Çivi, Hatice Özlem; Topallı, Kağan; Department of Electrical and Electronics Engineering (2014) This thesis presents design, fabrication and measurement of a novel, continuously tunable, circularly polarized X-band microfluidic transmitarray unit cell. To the author’s knowledge, this is the first study in the literature where a microfluidics approach is used to tune the phase of the transmitted field through the unit cell by the element rotation method. Furthermore, the generalized transmitarray design conditions necessary to utilize the element rotation method are derived. To implement the novel micr...
A dielectrophoretic cell/particle separator fabricated by spiral channels and concentric gold electrodes Yilmaz, G.; Çiftlik, A.T.; Külah, Haluk (2009-12-14) This paper presents the design and implementation of a novel dielectrophoresis (DEP) system with spiral channels and concentric electrodes for high resolution cell separation applications. The device is fabricated with a 4 mask parylene process and the design is optimized in MATLAB Simulink reg to confine the operation. Tests with micro particles of different sizes are performed to show size-based separation by dielectrophoresis. Proposed device is also tested with K562 leukemia cell lines to prove that the...
An infrared FPA readout circuit based on Current Mirroring Integration Külah, Haluk; Akın, Tayfun (1999-01-01) This paper reports an improved Current Mirroring Integration (CMI) unit cell and a new readout structure based on it. The new structure combines the benefits of the current mirroring direct injection and switch current integration structures, satisfying the requirements for the high resolution and high performance IR FPA readouts. The improved CMI readout circuit provides very high injection efficiency, almost-zero detector bias, and large dynamic range, while it can be implemented in a small pixel area. th...

Citation Formats

E. Erdil et al., “A Reconfigurable Microfluidic Transmitarray Unit Cell,” 2013, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/54623.