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Non-linear nanocrystalline metal spiral cone probe

A nano-metal, nonlinear technology, applied in the field of optics and optoelectronics, can solve the problems of material utilization and processing difficulty, and achieve the effects of high utilization rate, improved sensitivity and strong rotation characteristics

Inactive Publication Date: 2016-07-27
NANKAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] Improving the strength of nanofocusing and the control of nanofocusing vector fields are crucial for nanolithography, nanosensing, and nanomanipulation and particle screening, and structures that combine these two effects have previously been explored by nanometallic helical axicons. The invention of the needle, but it is necessary to change the ratio of the nanocone and the helical structure, and when the ratio is relatively large, it will bring difficulties to the material utilization and processing, and it is difficult to have both effects well

Method used

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  • Non-linear nanocrystalline metal spiral cone probe
  • Non-linear nanocrystalline metal spiral cone probe
  • Non-linear nanocrystalline metal spiral cone probe

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Embodiment 1

[0021] Such as figure 1 As shown, the near-field nonlinear nano-metal helical cone probe with high sensitivity and high spatial resolution provided by the present invention is composed of a metal nano-cone structure and a metal nonlinear helical structure, and its structural equation h(ρ in the cylindrical coordinate system ,θ) is:

[0022] h ( ρ , θ ) = h 0 · [ 3 · ( 1 - ρ R ) + 1 · ( θ 2 π ) N ] - - - ( 1 )

[0023] From the nonlinear he...

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Abstract

The invention relates to an improved non-linear nanocrystalline metal spiral cone probe with high sensitivity and high spatial resolution and for generating a strong vertical polarization electric field and a rotating electric field. The probe is formed by a combination of a metal nanocone structure and a metal non-linear spiral structure, on the basis of a condition that the cone and spiral structure is 3:1 combined in the nanocrystalline metal spiral cone probe with the prior best regulation effect, a spiral structure non-linear factor N (1<N<6) is introduced, the regulation of strength and polarization of a nano-focussing field of the non-linear factor can be realized through changing the non-linear factor, the strength can reach 4 orders of magnitude, and a longitudinal field is more than 54.4% of a total field. According to the invention, the probe can serve as the probe of scanning probe microscope such as an atomic force microscope, a scanning near-field microscope and the like and a tip-enhanced Raman spectroscopy probe, and the probe has important application value in fields including nano-sensing, nano-photoetching, nano-manipulating and the like.

Description

technical field [0001] The invention belongs to the field of optics and optoelectronic technology, and relates to nano-focusing, nano-manipulation, nano-optoelectronic devices and surface plasmon excitation, in particular to an improved metal with high spatial resolution and high sensitivity that can generate strong longitudinally polarized electric fields and rotating electric fields photoelectric probe. Background technique [0002] Improving the strength of nanofocusing and the control of nanofocusing vector fields are crucial for nanolithography, nanosensing, and nanomanipulation and particle screening, and structures that combine these two effects have previously been explored by nanometallic helical axicons. The invention of the needle, but it is necessary to change the ratio of the nanocone and the helical structure, and when the ratio is relatively large, it will bring difficulties to material utilization and processing, and it is difficult to have both effects well....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01Q10/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00G01Q10/00
Inventor 匡登峰董立群曹燕燕
Owner NANKAI UNIV
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