High Throughput Laser Process of Transparent Conducting Surfaces for Terahertz Bandpass Ultrathin Metamaterials

Qinghua Wang; Michaella Raglione; Baojia Li; Xin Jin; Fatima Toor; Mark Arnold; Hongtao Ding

doi:10.1038/s41598-019-38949-1

Back

High Throughput Laser Process of Transparent Conducting Surfaces for Terahertz Bandpass Ultrathin Metamaterials

Journal article

Open access

Peer reviewed

High Throughput Laser Process of Transparent Conducting Surfaces for Terahertz Bandpass Ultrathin Metamaterials

Qinghua Wang, Michaella Raglione, Baojia Li, Xin Jin, Fatima Toor, Mark Arnold and Hongtao Ding

Scientific reports, Vol.9(1), pp.3083-3083

02/28/2019

DOI: 10.1038/s41598-019-38949-1

PMCID: PMC6395646

PMID: 30816138

Files and links (1)

url

https://doi.org/10.1038/s41598-019-38949-1View

Published (Version of record) Open Access

Abstract

Terahertz (THz) imaging has attracted much attention within the past decade as an emerging nondestructive evaluation technique. In this paper, we present a novel Laser-based Metamaterial Fabrication (LMF) process for high-throughput fabrication of transparent conducting surfaces on dielectric substrates such as glass, quartz and polymers to achieve tunable THz bandpass characteristics. The LMF process comprises two steps: (1) applying ultrathin-film metal deposition, with a typical thickness of 10 nm, on the dielectric substrate; (2) creating a ~100-micron feature pattern on the metal film using nanosecond pulsed laser ablation. Our results demonstrate the use of laser-textured ultra-thin film with newly integrated functional capabilities: (a) highly conductive with ~20 Ω/sq sheet resistance, (b) optically transparent with ~70% transmittance within visible spectrum, and (c) tunable bandpass filtering effect in the THz frequency range. A numerical analysis is performed to help determine the fundamental mechanism of THz bandpass filtering for the LMF-built samples. The scientific findings from this work render an economical and scalable manufacturing technique capable of treating large surface area for multi-functional metamaterials.

Details

Title: Subtitle: High Throughput Laser Process of Transparent Conducting Surfaces for Terahertz Bandpass Ultrathin Metamaterials
Creators: Qinghua Wang - Department of Mechanical Engineering, University of Iowa, Iowa City, Iowa, 52242, USA
Michaella Raglione - Department of Chemistry, University of Iowa, Iowa City, Iowa, 52242, USA
Baojia Li - School of Materials Science and Engineering, Jiangsu University, Zhenjiang, 212013, China
Xin Jin - Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, 52242, USA
Fatima Toor - Department of Electrical and Computer Engineering, University of Iowa, Iowa City, Iowa, 52242, USA
Mark Arnold - Department of Chemistry, University of Iowa, Iowa City, Iowa, 52242, USA
Hongtao Ding - Department of Mechanical Engineering, University of Iowa, Iowa City, Iowa, 52242, USA. hongtao-ding@uiowa.edu
Resource Type: Journal article
Publication Details: Scientific reports, Vol.9(1), pp.3083-3083
DOI: 10.1038/s41598-019-38949-1
PMID: 30816138
PMCID: PMC6395646
NLM abbreviation: Sci Rep
ISSN: 2045-2322
eISSN: 2045-2322
Publisher: England
Grant note: 1762353 / National Science Foundation (NSF)
Language: English
Date published: 02/28/2019
Academic Unit: Electrical and Computer Engineering; Physics and Astronomy; Center for Biocatalysis and Bioprocessing; Fraternal Order of Eagles Diabetes Research Center; Chemistry; Mechanical Engineering
Record Identifier: 9983985955002771

Metrics

12 Record Views

15 Times Cited - Web of Science