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Highly-Flexible Near-Infrared Metamaterials

Summary

This can be used for tunable sensors and emitters for near-Infrared detectors. It introduces a novel multilayer flexible metamaterial, which can work at near infrared (NIR) regime, can be fabricated on transparent PET substrate using flip chip transfer (FCT) technique. These novel NIR metamaterial device can be transformed into various shapes by bending the PET substrate with no requirement to change the material composition of the substrate.

Technology Benefits

Flexible form and substrate, solution-free process

Technology Application

Tunable sensors and emitters for near-Infrared detectors, which can be used for the applications such as night vision, building inspection, thermography, non-destructive tests and chemical imaging

Detailed Technology Description

It introduces a novel multilayer flexible metamaterial that can be fabricated using flip chip transfer (FCT) technique. This technique is different from other similar techniques such as metal lift off process, which fabricates the nanostructures directly onto the flexible substrate or nanometer printing technique. It is a solution-free FCT technique using double-side optical adhesive as the intermediate transfer layer and a tri-layer metamaterial nanostructures on a rigid substrate can be transferred onto adhesive first. Then, the thin optical adhesive and the nanostructure can be conformably coated onto flexible substrates, such as the bent PET substrate, paper etc. Thus, the flexible metamaterial can be fabricated independent of the original substrate used. This flexible metamaterial is tunable via physical manipulation of its flexible substrate with no requirement to change the material composition of the substrate.

Supplementary Information

Inventor: Cheah, Kok Wai | Li, Guixin
Priority Number: US9227383B2
IPC Current: B32B002736 | G02B000100 | G02F000101
Assignee Applicant: Hong Kong Baptist University
Title: Highly flexible near-infrared metamaterials
Usefulness: Highly flexible near-infrared metamaterials
Summary: The metamaterial is useful for preparing tunable receiver device being one or more of electromagnetic wave sensors, electromagnetic wave absorbers, and electromagnetic wave receivers; and for preparing tunable transmitter device being one or more of electromagnetic wave emitters, electromagnetic wave transmitters, and electromagnetic wave reflectors (all claimed).
Novelty: Highly flexible near-infrared metamaterial useful for preparing tunable receiver device, and tunable transmitter device comprises a multi-layer comprising at least a conductor layer, and a dielectric layer, and a flexible substrate

Industry

Chemical/Material

Sub Category

Chemical/Material Application

Application Date

2012.12.23

Application No.

US 13/726,183

Others

Published

ID No.

B82/CK/High/US02

Country/Region

Hong Kong