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公开(公告)号：US11077499B2
公开(公告)日：2021-08-03
申请号：US16976079
申请日：2018-05-28
Applicant: Southeast University
Inventor： Xiaoyang Zhang , Tong Zhang , Xiaomei Xue , Yanyan Qin
Abstract: A controllable preparation method for a plasmonic nanonail structure is provided. A size of a nanomaterial can be controlled at sub-wavelength. The nanomaterial has good localized surface plasmon resonance effect, and the optical, electrical and mechanical properties of the nanometer material all can be regulated. The plasmonic nanonail is composed of two parts, i.e., a silver nanorod, a gold nanorod or a silver-gold-silver alloy nanorod and an approximate equilateral triangular nano-silver plate growing on the nanorod. A length of the nanorod is controlled within 20-30 nanometers, a diameter of the nanorod is controlled within 10-200 nanometers, a side length of the triangular nano-silver plate is controlled within 20 nanometers to 2 microns, and a size of the triangular plate is less than or equal to the length of the nanorod.
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公开(公告)号：US11446647B2
公开(公告)日：2022-09-20
申请号：US16771298
申请日：2018-05-28
Applicant: SOUTHEAST UNIVERSITY
Inventor： Xiaoyang Zhang , Tong Zhang , Shanjiang Wang , Yu Ji , Minghu Zhao , Linfeng Zhao
IPC: B01J31/16 , B01J31/38 , B01J31/26 , B01D53/86 , B01D39/14 , B01J35/00 , B01J35/06 , B01J37/04 , B01J37/06 , B01J37/34 , B01J27/04 , B01J21/06 , B01J23/06 , B01D39/16 , B01J35/02 , B01J23/50 , B01J23/66 , B01J37/00
Abstract: A method for preparing a porous nano-fiber heterostructure photocatalytic filter screen includes: preparing a noble metal nanostructure with tunable spectra and a heterostructure composite photocatalyst of a photocatalytic material; and preparing a large area and multilayer porous nano-fiber filter screen structure, while utilizing a scattering enhancement effect of metal nanoparticles in an porous optical fiber to realize repeated conduction of sunlight in the optical fiber and finally interact with the composite photocatalyst on a surface to improve photocatalytic efficiency. Preparation of the heterostructure composite photocatalyst with a wide spectral response of and tunable visible to infrared band spectra is realized, at the same time, with reference to high adsorbability, high light transmission of nanometer fiber and unique optical characteristics of metal nanoparticles, an air purification filter screen with a high sunlight utilization rate and a high catalytic degradation capability is creatively provided.
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Patent Agency Ranking
3.发明授权公开(公告)号：US10730113B2
公开(公告)日：2020-08-04
申请号：US15735129
申请日：2017-03-03
Applicant: SOUTHEAST UNIVERSITY
Inventor： Xiaoyang Zhang , Tong Zhang , Xiaomei Xue
Abstract: A large-scale multi-step synthesis method for ultralong silver nanowire with controllable diameter, comprises: an ethylene glycol solution containing polyvinylpyrrolidone and sodium chloride is fully heated to obtain a solution with strong reducibility, and then silver nitrate in glycol solution is added for a generation of a large number of crystal seeds; hydrogen peroxide is used to achieve the selection of the crystal seeds for a small amount of crystal seeds with particular sizes; the temperature is immediately raised to increase the reaction rate until the threshold of the etching crystal seeds of nitric acid is broke through; the temperature is lowered for long-timed reaction to slow down the reaction rate, reduce the probability of the isotropic seeds by self-nucleation and promote the absorption of small nucleus in the radial direction of large nucleus or nanowire, thus obtaining the ultralong silver nanowire.
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公开(公告)号：US11099323B2
公开(公告)日：2021-08-24
申请号：US16978717
申请日：2018-05-28
Applicant: SOUTHEAST UNIVERSITY
Inventor： Xiaoyang Zhang , Tong Zhang , Shanjiang Wang , Xiaomei Xue , Huanli Zhou
Abstract: The present invention provides a surface plasmon-optical-electrical hybrid conduction nano heterostructure and a preparation method therefor. The structure includes an exciting light source, a semiconductor nano-structure array, a two-dimensional plasmonic micro-nano structure, a sub-wavelength plasmon polariton guided wave, an emergent optical wave, a one-dimensional plasmonic micro-nano structure, a wire, a metal electrode, a conductive substrate, a probe molecule, an atomic-force microscopic conductive probe and a voltage source. The method achieves a semiconductor seed crystal with controllable distribution and density by controlling free metal ions, air, water or oxygen on a metal substrate to achieve highly uniform control of the seed crystal, and then strictly controls a length-to-diameter ratio and distribution of a semiconductor structure by continuous growth. Therefore, a new nano optics platform is provided for studying various novel effects produced by interaction between light and substances.
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公开(公告)号：US11060916B2
公开(公告)日：2021-07-13
申请号：US16975400
申请日：2018-05-28
Applicant: Southeast University
Inventor： Tong Zhang , Dan Su , Meng Xiong , Feng Shan , Xiaoyang Zhang
IPC: G01J3/447 , G01J3/28 , H01L27/146 , H01L31/0232 , H01L31/0352 , H01L31/101
Abstract: An adjustable hyperspectral detection chip enhanced by a multi-resonance plasmonic mechanism. The detection chip consists of an array of metal nanonail resonator detection units. Each detection unit (1) comprises: a bottom electrode (2), a semiconductor material layer (3), a spacer layer (4), a nanonail array (5), a control material layer (6), a top electrode (7), a peripheral control signal (8), and a driving circuit (9). The positional relationship from top to bottom is the top electrode (7), the control material layer (6), the nanonail array (5), the spacer layer (4), the semiconductor material layer (3), and the bottom electrode (2). The nanonail array (5) is loaded inside the control material layer (6), and the peripheral control signal (8) and the driving circuit (9) are connected to both sides of the control material layer (6).
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公开(公告)号：US10971895B2
公开(公告)日：2021-04-06
申请号：US16975398
申请日：2018-05-28
Applicant: Southeast University
Inventor： Tong Zhang , Feng Shan , Xiaoyang Zhang , Xiaoyi Pang
Abstract: A surface plasmon infrared nano-pulse laser having a multi-resonance competition mechanism, consisting of the four parts of a surface plasmon nano-pin resonance chamber (1), a spacer layer (2), a gain medium (3), and a two-dimensional material layer (4). The surface plasmon nano-pin resonance chamber (1) consists of a metal nano rod (11) and one or more nano sheets (12) grown thereon, the surface plasmon nano-pin resonance chamber (1) and the gain medium (3) being isolated by the isolating layer (2), and the two-dimensional material layer (4) covering a surface of the surface plasmon nano-pulse laser; positive and negative electrodes (5) are located at two ends of the surface plasmon nano-pulse laser, and a layer of a two-dimensional material having a feature of saturatable absorption is introduced to a surface of the nano-pin resonance chamber.
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公开(公告)号：US10964830B2
公开(公告)日：2021-03-30
申请号：US16970638
申请日：2018-05-28
Applicant: SOUTHEAST UNIVERSITY
Inventor： Tong Zhang , Shanjiang Wang , Xiaoyang Zhang
IPC: H01L31/0352 , H01L31/109
Abstract: A surface plasmon-semiconductor heterojunction resonant optoelectronic device and a preparation method thereof are provided. A surface ligand molecule is modified on a plasmonic nanostructure, a plasmonic crystal face structure is bound to the surface ligand molecule, a semiconductor nanostructure seed crystal is located on the plasmonic crystal face structure, a one-dimensional semiconductor nanostructure is located on the semiconductor nanostructure seed crystal, and all parts are in tight contact. The heterogeneous integration material achieves a lattice match at an interface, greatly reduces a loss caused by defects and rough crystal faces, and can achieve direct coupling of a surface plasmon mode and an optical mode. The heterogeneous integration material has a large application prospect in the fields of a nanolaser, a nano heat source and photoelectric detection and photocatalysis.
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