A symmetrical v-shaped gold nano-optical antenna for enhanced detection signal

An optical antenna and signal detection technology, applied in nano-optics, nano-technology, nano-technology, etc., can solve the problems of reducing the coupling distance and improving the sharpness of nano-antennas without limit, achieving strong electromagnetic field enhancement and improving field enhancement factor effect

Active Publication Date: 2022-05-27
TIANJIN UNIV
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  • Claims
  • Application Information

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Problems solved by technology

Due to the limitation of experimental conditions, the sharpness of the nano-antenna cannot be increased without limit, and the coupling distance cannot be adjusted without limit.

Method used

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  • A symmetrical v-shaped gold nano-optical antenna for enhanced detection signal
  • A symmetrical v-shaped gold nano-optical antenna for enhanced detection signal
  • A symmetrical v-shaped gold nano-optical antenna for enhanced detection signal

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Embodiment Construction

[0039] Below in conjunction with accompanying drawing, the present invention is further described:

[0040] As shown in Figure 1(a), a symmetrical V-shaped gold nano-optical antenna for enhancing detection signals is composed of a set of symmetrical structures, namely two symmetrical V-shaped structures. In this embodiment, multiple coupling V is defined. The gold nano-antenna is composed of two sets of symmetrical structures, namely four symmetrical V-shaped structures. The side width of the V-shaped structure is in the range of 6nm-14nm, the side length of the V-shaped structure is in the range of 80nm-120nm, the angle of the V-shaped structure is in the range of 30°-90°, and the interval of the symmetrical V-shaped gold nano-optical antenna is in the range of 2nm-10nm. The thickness of the V-shaped structure is 8 nm.

[0041] The characteristics of the nano-optical antenna of the present invention are analyzed through the finite-difference time-domain algorithm and the the...

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Abstract

The invention discloses a symmetrical V-shaped gold nano-optical antenna for enhancing detection signals, which includes at least one group of symmetrical structures, the symmetrical structures are composed of two V-shaped structures arranged symmetrically, and the sides of the V-shaped structures are The wide range is 6nm-14nm, the side length range of the V-shaped structure is 80nm-120nm, the included angle range of the V-shaped structure is 30°-90°, and the interval range of the V-shaped gold nano optical antenna is 2nm-10nm. The method of coupling the antenna with multiple V-shaped structures in the present invention can further improve the electromagnetic field enhancement factor without changing the included angle of the V-shaped structure, and the generation of a larger electromagnetic field enhancement factor makes the present invention can be well applied in the detection of single molecules To improve the intensity of the detection signal, thereby designing a nano-antenna with higher local field enhancement, so that the antenna of the present invention can be well used to enhance the single-molecule detection signal.

Description

technical field [0001] The invention relates to the field of nano-optical antennas, in particular to a symmetrical V-shaped gold nano-optical antenna for enhancing detection signals. Background technique [0002] Metal nano-antennas can converge light wave electromagnetic field energy in the near-infrared light frequency range and apply it to the reception and transmission of electromagnetic field energy. In a dipole antenna, the electromagnetic field of the light wave interacts with the plasma in the antenna, causing the plasma to oscillate and generate a current in the antenna loop. When the frequency of the plasma oscillation is consistent with the incident light wave, a localized surface plasmon resonance occurs. The local electromagnetic field of the nano-antenna is enhanced. Based on the above properties, nanoantennas are favored in many fields, such as photodetection, sensor technology, heat concentration, spectroscopy, and nanoimaging. The development of nanofabric...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/36B82Y20/00
CPCH01Q1/36B82Y20/00
Inventor 林旺陈万里冯远明
Owner TIANJIN UNIV
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