-
公开(公告)号：US20210348854A1
公开(公告)日：2021-11-11
申请号：US17170849
申请日：2021-02-08
Applicant: South China University of Technology
Inventor： Zicong HE , Zhenping WAN , Hanping CHEN , Xiqian SONG , Guanghui ZHAN
Abstract: An outer finned tube includes a tube body, an outer wall of the tube body is provided with outer tins spirally arranged in an extension direction of the tube body; grid fins are arranged between two adjacent spiral parts of the outer fins correspondingly; two ends of each grid fin are connected to the two adjacent spiral parts of the corresponding outer fin respectively; a gap is kept between each grid fin and the outer wall of the tube body; and the plurality of grid fins are spaced in the extension direction of the tube body. An enhancing cavity is formed in an area defined by the outer wall of the tube body, inner walls of the grid fins and the outer tins in an encircling way, which can form a larger degree of superheat, provides a nucleation point for a boiling/condensation process and improves a heat exchange performance.
-
公开(公告)号：US20210336351A1
公开(公告)日：2021-10-28
申请号：US16491400
申请日：2018-10-18
Applicant: South China University of Technology
Inventor： Xiuyin Zhang , Yufeng Wu , Yunfei Cao , Wen Duan , Yao Zhang
Abstract: A dual-polarized duplex antenna includes a top-layer dielectric substrate; a metal reflective ground plate below the top-layer dielectric substrate; vertically-placed duplex baluns for duplexing operation between the top-layer dielectric substrate and the metal reflective ground plate; and four dipole arms horizontally printed on an upper surface of the top-layer dielectric substrate. Each of the duplex balun includes a vertical dielectric substrate, a balun feedline printed on a front side of the vertical dielectric substrate, and a ground plane with a printed slot line printed on a reverse side of the vertical dielectric substrate. The balun feedline includes a low-pass filter, a high-pass filter and a microstrip feeding structure serving as a connection. The low-pass filter and the high-pass filter are located on two sides of the slot line, and are connected together by the microstrip feeding structure.
-
83.发明授权公开(公告)号：US11149152B2
公开(公告)日：2021-10-19
申请号：US16309357
申请日：2017-10-24
Applicant: South China University of Technology
Inventor： Lizhi Zhang , Jinghui Zhi
IPC: C09D5/16 , B05D1/18 , B05D3/02 , B05D3/10 , B05D7/00 , C08K3/34 , C08K5/17 , C08K5/544 , C09D183/06
Abstract: The present invention belongs to the field of super-hydrophobic surface technology, and discloses a durable hydrophilic-super-hydrophobic bipolar self-cleaning composite film and a preparation method therefor. The preparation method is as follows: adding an epoxy silane coupling agent into an organic solvent; after stirring and mixing well, adding an amine curing agent and distilled water to the mixture; stirring and adding micron-sized solid particles and hydrophobic nano silicon dioxide particles; continuing stirring to obtain a hydrophilic layer solution; adding a hydrophobic modifier and a hydrophilic nano silicon dioxide particles into the solvent to obtain a hydrophobic layer solution; coating a pretreated substrate surface with the hydrophilic layer solution, and performing heating treatment at 60° C. to 80° C. for 10-50 min; then coating the surface with the hydrophobic layer solution, and performing heating treatment at 100° C. to 140° C. for 50-90 min to obtain the durable hydrophilic-super-hydrophobic bipolar self-cleaning composite film. The preparation method of the present invention is simple, and the super-hydrophobic surface of the obtained composite film has strong mechanical durability and a good industrial application prospect.
-
公开(公告)号：US20210305722A1
公开(公告)日：2021-09-30
申请号：US17265538
申请日：2020-03-11
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Xiuyin ZHANG , Chaofeng DING , Yiyang LIU , Yunfei CAO , Quan XUE
Abstract: The invention discloses a broadband dual-polarization filtering base station antenna unit, a base station antenna array and a communication device, the antenna unit comprising four dipole arms, four parasitic branches and a feed structure, wherein two of the dipole arms are arranged oppositely, the other two dipoles are also arranged oppositely, the four dipole arms correspond to the four parasitic branches respectively, each dipole arm is coupled to a corresponding parasitic branch, the feed structure is connected with the four dipole arms; the antenna array comprising at least two antenna units described above; the communication device comprising the antenna unit described above, or comprising the antenna array described above. Not only the radiation performance of the present invention may achieve high roll-off filtering characteristics and high polarization isolation, but also to a great extent ensuring that no introduction of additional insertion loss and occupied area caused by redundant structures, and the bandwidth may be expanded, the height reduced, and a stable pattern in a wide frequency band is achieved.
-
公开(公告)号：US20210296051A1
公开(公告)日：2021-09-23
申请号：US17203230
申请日：2021-03-16
Applicant: South China University of Technology
Inventor： Ming LV , Ruqiang LI , Yani Wei , Qiutan Lai
IPC: H01G4/12 , C04B35/634 , C04B35/468 , C04B41/45 , C04B41/50 , C03C10/00 , C03C12/00
Abstract: A sandwich-structured dielectric material for pulse energy storage is provided as well as a preparation method thereof. Employing a sandwich structure and combining the properties of ceramic-glass materials prepares a high performance dielectric material for pulse energy storage, in which the ceramic dielectric is core-shell structured powder of BaxSr1-xTiO3 coated with SiO2, and the glass material is alkali-free glass AF45, of which the chemical composition is 63% SiO2-12% BaO-16% B2O3-9% Al2O3. AF45 alkali-free glass paste is spin-coated on both sides of the ceramic and calcined to get a layer-structured material of glass-ceramic-glass.
-
Patent Agency Ranking
86.发明授权公开(公告)号：US11110415B2
公开(公告)日：2021-09-07
申请号：US15763161
申请日：2016-09-25
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Hanxiong Huang , Anfu Chen
Abstract: The present invention discloses polymer surfaces with T-shaped microstructure and their fabrication method and applications. The polymer surfaces with the T-shaped microstructure are characterized in that T-shaped microposts arrange orderly on them, and nanobulges arrange orderly on the top surfaces of the micronails of the T-shaped microposts. A flexible insert is designed and manufactured according to the geometry of the T-shaped microposts, and nanogrooves are manufactured on the cavity surface of an injection mold according to the geometry of the nanobulges on the top surfaces of the micronails. The flexible insert is mounted on the injection mold cavity. An injection molding machine is used to inject the molten polymer into the injection mold cavity. Then the polymer surfaces with the T-shaped microposts, on the top surfaces of the micronails of which the nanobulges arrange orderly, are molded. The polymer surfaces with the T-shaped microstructure exhibit robust Cassie-Baxter state and moderate surface adhesion to water droplets, and can be used for quantitative collection, lossless transportation or micromixing of microdroplets.
-
公开(公告)号：US20210273328A1
公开(公告)日：2021-09-02
申请号：US17260561
申请日：2019-02-25
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
Inventor： Yongmei PAN , Yun OUYANG , Shaoyong ZHENG
Abstract: The invention discloses a planar end-fire pattern reconfigurable antenna, including a dielectric substrate, a radiation patch, a ground plane, a switch and bias circuit, and a coaxial cable, wherein the dielectric substrate includes a first surface and a second surface in opposite, the radiation patch is attached to the first surface of the dielectric substrate, the ground plane is attached to the second surface of the dielectric substrate, the switch and bias circuit is arranged in a slot of the ground plane, the coaxial cable includes an outer conductor and an inner conductor, the outer conductor is connected to the ground plane, the inner conductor penetrates through the dielectric substrate and is connected to the radiation patch, and the coaxial cable is arranged at a geometric center of the planar end-fire pattern reconfigurable antenna.
-
公开(公告)号：US20210273319A1
公开(公告)日：2021-09-02
申请号：US17056013
申请日：2018-10-18
Applicant: South China University of Technology
Inventor： Xiongying LIU , Haixiang ZHU , Zhongxin LI , Hongcai YANG
Abstract: The invention discloses a filtering antenna for wearable devices, which includes a top dielectric substrate, a bottom dielectric substrate, an antenna radiation unit, a top metal ground, a bottom metal ground, and an artificial magnetic conductor structure. The antenna radiation unit is printed on an upper surface of the top dielectric substrate, the top metal ground is printed on a lower surface of the top dielectric substrate, the artificial magnetic conductor structure is etched on an upper surface of the bottom dielectric substrate, and the bottom metal ground is printed on a lower surface of the bottom dielectric substrate. The antenna radiation unit is formed by a circular patch and a microstrip coupling feed stub structure. The invention has the advantages of miniaturization, easy integration, low profile, high gain, anti-interference, may work in the 5.8-GHz ISM frequency band, may be used in wearable devices, has filtering effect etc., and is suitable in the field of human body wireless local area network communications.
-
89.发明申请公开(公告)号：US20210273163A1
公开(公告)日：2021-09-02
申请号：US17257894
申请日：2018-10-25
Applicant: South China University of Technology
Inventor： Detao Liu , Lingfeng Su , Meiyan Lin , Hao Ouyang , Jun Li , Haisong Qi
Abstract: The present invention discloses a method for preparing bendable nanopaper-based flexible solar cells by 3D aerogel jet printing. In this method, firstly all-cellulose paper is soaked in ionic liquid, and quickly partially dissolved and regenerated under the condition of hot pressing to produce nanopaper with high transmittance and high haze; and then a 3D aerogel jet printer is used to precisely print the respective layers of a solar cell on the surface of the nanopaper as a flexible substrate material, wherein the solar cell comprises an anode PFN/Ag NWs, an active layer CuPc/C60/PTCBI/BCP and a cathode MoO3/Ag/MoO3, and the thickness of each layer is precisely controlled by setting the parameters of the 3D printer. The electrode grid line on the surface of the prepared paper flexible solar cell has a width less than 10 μm and a thickness less than 20 nm. The prepared flexible organic thin film solar cell has a photovoltaic conversion efficiency 50% to 70% higher than that of the traditional flexible solar cell.
-
公开(公告)号：US11104970B2
公开(公告)日：2021-08-31
申请号：US16760042
申请日：2018-10-31
Applicant: SOUTH CHINA UNIVERSITY OF TECHNOLOGY
IPC: C13K13/00
Abstract: The present invention discloses a method of preparing oligosaccharide using biomass sugar as raw material. The method places a biomass sugar in a quartz tubular reactor, places the quartz tubular reactor at a temperature-controlled zone of a tubular thermal conversion reactor under the protection of nitrogen gas, controls a thermal conversion time, rapidly quenches a material to obtain an oligosaccharide precursor after thermal conversion ends, then dissolves by adding pure water and purifies through an inorganic ultrafiltration membrane, and finally obtain an oligosaccharide after drying.
-
-
-
-
-
-
-
-
-
Search Results
834
records
(took 0.026 seconds)
