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Oh H, Lee SW, Kim M, et al. Designing Surface Chemistry of Silver Nanocrystals for Radio Frequency Circuit Applications. ACS Appl Mater Interfaces. 2018;10(43):37643-37650doi: 10.1021/acsami.8b12005.
Oh, H., Lee, S. W., Kim, M., Lee, W. S., Seong, M., Joh, H., Allen, M. G., May, G. S., Bakir, M. S., & Oh, S. J. (2018). Designing Surface Chemistry of Silver Nanocrystals for Radio Frequency Circuit Applications. ACS applied materials & interfaces, 10(43), 37643-37650. https://doi.org/10.1021/acsami.8b12005
Oh, Hanju, et al. "Designing Surface Chemistry of Silver Nanocrystals for Radio Frequency Circuit Applications." ACS applied materials & interfaces vol. 10,43 (2018): 37643-37650. doi: https://doi.org/10.1021/acsami.8b12005
Oh H, Lee SW, Kim M, Lee WS, Seong M, Joh H, Allen MG, May GS, Bakir MS, Oh SJ. Designing Surface Chemistry of Silver Nanocrystals for Radio Frequency Circuit Applications. ACS Appl Mater Interfaces. 2018 Oct 31;10(43):37643-37650. doi: 10.1021/acsami.8b12005. Epub 2018 Oct 17. PMID: 30288975.
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ACS Appl Mater Interfaces. 2018 Oct 31;10(43):37643-37650. doi: 10.1021/acsami.8b12005. Epub 2018 Oct 17.

Designing Surface Chemistry of Silver Nanocrystals for Radio Frequency Circuit Applications.

ACS applied materials & interfaces

Hanju Oh, Seung-Wook Lee, Minsoo Kim, Woo Seok Lee, Mingi Seong, Hyungmok Joh, Mark G Allen, Gary S May, Muhannad S Bakir, Soong Ju Oh

Affiliations

  1. School of Electrical and Computer Engineering , Georgia Institute of Technology , Atlanta , Georgia 30332 , United States.
  2. Singh Center for Nanotechnology & Department of Electrical and Systems Engineering , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States.
  3. University of California , Davis , California 95616 , United States.

PMID: 30288975 DOI: 10.1021/acsami.8b12005

Abstract

We introduce solution-based, room temperature- and atmospheric pressure-processed silver nanocrystal (Ag NC)-based electrical circuits and interconnects for radio frequency (RF)/microwave frequency applications. We chemically designed the surface and interface states of Ag NC thin films to achieve high stability, dc and ac conductivity, and minimized RF loss through stepwise ligand exchange, shell coating, and surface cleaning. The chemical and structural properties of the circuits and interconnects affect the high-frequency electrical performance of Ag NC thin films, as confirmed by high-frequency electromagnetic field simulations. An all solution-based process is developed to build coplanar structures, in which Ag NC thin films are positioned at both sides of the substrates. In addition, we fabricated flexible transmission lines and broadband electrical circuits for resistors, interdigitated capacitors, spiral and omega-shaped inductors, and patch antennas with maximum inductance and capacitance values of 3 nH and 2.5 pF at frequencies up to 20 GHz. We believe that our approach will lead to a cost-effective realization of RF circuits and devices in which sensing and wireless communication capabilities are combined for internet-of-things applications.

Keywords: nanocrystals; patch antenna; radio frequency passive circuits; surface engineering; transmission line

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