Continuously adjustable degradable terahertz meta-material based on optical driving and preparation method thereof

A terahertz and metamaterial technology, applied in the field of degradable terahertz metamaterials and its preparation, can solve problems such as inability to resonate frequency, THz wave source not well resolved, continuous tuning, etc., and achieve good biocompatibility

Active Publication Date: 2016-07-27
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

However, since the long-wave microwave direction mainly relies on electronic technology, and the short-wave infrared wave direction mainly relies on optical technology, the problem of the THz wave source between the two waves has not been well resolved, which has become a li

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  • Continuously adjustable degradable terahertz meta-material based on optical driving and preparation method thereof
  • Continuously adjustable degradable terahertz meta-material based on optical driving and preparation method thereof
  • Continuously adjustable degradable terahertz meta-material based on optical driving and preparation method thereof

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[0034] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0035] At present, metamaterial structures with concentrated performance such as broadband, multi-band, amplitude modulation, and different driving methods are hot spots and challenges in the field of metamaterials. The invention provides a degradable terahertz metamaterial with multiple performances and continuously adjustable based on optical drive.

[0036] Such as Figure 1-Figure 3 As shown, a degradable terahertz metamaterial based on light-driven continuous adjustment, including: sodium al...

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Abstract

The invention provides a continuously adjustable degradable terahertz meta-material based on optical driving and preparation method thereof. The degradable terahertz meta-material comprises a sodium alginate substrate, a metal layer and a semiconductor film which are arranged on the sodium alginate substrate; the patterns of the metal layer and the semiconductor film are completely same: three equally spaced openings are formed on the outer ring, two equally spaced openings are formed on the middle ring, and one opening is formed on the inner ring; one of the three openings on the outer ring is aligned with one opening on the middle ring, and the other opening on the middle ring is aligned with the opening on the inner ring. Since the concentrations of carriers produced by the semiconductor film under different optical power excitations are different, the continuous tuning on the electromagnetically responded resonance strength from different conductivities is realized. The meta-material provided by the invention is simple in structure and processing technique, has degradable property and can be used for biomolecule detection, so that the incident electromagnetic wave of the terahertz meta-material has a plurality of frequency bands with continuously tuned strength in the terahertz waveband transmission.

Description

technical field [0001] The present invention relates to a device of micro-nano processing technology, in particular to a continuously adjustable degradable terahertz metamaterial based on optical drive and a preparation method thereof. Background technique [0002] Terahertz waves refer to electromagnetic waves with a frequency in the range of 0.1 to 10 THz, with a corresponding wavelength of 3 mm to 30 μm, and its band is located between microwave and infrared waves in the electromagnetic spectrum. The frequency response of matter in the THz band contains rich physical, chemical and biological information. Terahertz waves have the characteristics of low energy, wide bandwidth, and strong penetrability, and have important applications in the fields of communication, biomedicine, detection imaging, and nondestructive testing. However, since the long-wave microwave direction mainly relies on electronic technology, and the short-wave infrared wave direction mainly relies on op...

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Application Information

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IPC IPC(8): H01Q17/00G02F1/361
CPCG02F1/3619H01Q17/00
Inventor 杨斌归弇赵小青刘景全杨春生
Owner SHANGHAI JIAO TONG UNIV
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