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anodic aluminum oxide
AAO membrane
porous anodic alumina
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  • viewed: 2327
    update at: 2016 - Aug - 15
    The 2015 International Summit on Technological Innovation and Intelligent Industry was recently held in Shenzhen to promote the exchange of venture teams, investment and research teams worldwide. I learned that the summit has attracted more than 200 international venture projects to hold a roadshow, of which more than 150 venture capital, banks and securities and other financial institutions expressed interest in the summit project.At present, in the atmosphere of "mass entrepreneurship and mass innovation", the development driven by scientific and technological innovation has become the consensus of the industry. In order to realize the transformation and development of Guangdong economy under the new normal economic situation, it is urgent to promote international technological...
  • viewed: 34523
    update at: 2018 - Oct - 11
    Traditional AAO templates are made of high purity aluminum sheets, which are easy to operate and have high degree of freedom. However, it is difficult for AAO templates to enter the semiconductor process and form complex micro-devices. In order to solve this problem, AAO templates on substrates emerge as the times require. The AAO template is usually prepared by depositing a layer of aluminum on the substrate first. Compared with the ultra-thin AAO template transferred to the substrate, the advantages of this in-situ growth of AAO template are that AAO and substrate bond very closely, the template has no wrinkles and macroscopic fluctuations, and does not detach from the substrate. Recently, we launched a AAO template on the substrate. For details, please refer to our product page or conta...
  • viewed: 0
    update at: 2018 - Oct - 11
    Rush to explode, promote forty percent off 666, and limit the amount.Double pass AAO filter membrane with large spacing and large apertureQuantity is limited, first come first served, then finish.The final interpretation is all of our company.Product ParameterProduct NO.Interpore distance/nmPore diameter/nmThicknessMembrane size Φ/mmFront sideBack sideDP065-020-5000065302040~60μm13,25DP065-030-5000065303040~60μm13,25DP065-030-5000065403040~60μm13,25DP065-040-5000065404040~60μm13,25DP100-035-50000100503540~60μm13,25DP100-040-50000100504040~60μm13,25DP100-050-50000100605040~60μm13,25DP100-060-50000100606040~60μm13,25DP100-070-50000100707040~60μm13,25DP125-050-50000125605040~60μm13,25DP125-060-50000125606040~60μm13,25DP125-070-50000125707040~60μm13,25DP125-080-50000125808040~60μm13,25...
  • viewed: 0
    update at: 2018 - Sept - 27
    Recently, our company has launched two new carbon nanotube products, namely, carbon nanotube sponge and carbon nanotube film.      The cavernous body of carbon nanotubes is a sponge like carbon nanotube formed by self-assembly of multi walled carbon nanotubes. Its structure is uniform, its mechanical strength is good, its elasticity is high, its porosity is high, and its density is low. Carbon nanotube sponge can be used as conductive porous framework for lithium ion batteries, supercapacitors, catalysts and other energy storage materials; it can also be directly used for adsorption, filtration and other environmental treatment.Carbon nanotubes (CNTs) films were synthesized by chemical vapor deposition (CVD). They have high mechanical strength, good conductivity and uni...
Industry News
  • viewed: 2327
    update at: 2018 - Oct - 9
    MIT engineers have found a way to directly “pinprick” microscopic holes into graphene as the material is grown in the lab. With this technique, they have fabricated relatively large sheets of graphene (“large,” meaning roughly the size of a postage stamp), with pores that could make filtering certain molecules out of solutions vastly more efficient.Such holes would typically be considered unwanted defects, but the MIT team has found that defects in graphene — which consists of a single layer of carbon atoms — can be an advantage in fields such as dialysis. Typically, much thicker polymer membranes are used in laboratories to filter out specific molecules from solution, such as proteins, amino acids, chemicals, and salts.If it could be tailored with pores small enough to let through certain...
  • viewed: 65
    update at: 2018 - Mar - 29
    New metal-mesh membrane could solve longstanding problems and lead to inexpensive power storage.David L. Chandler | MIT News Office January 22, 2018A type of battery first invented nearly five decades ago could catapult to the forefront of energy storage technologies, thanks to a new finding by researchers at MIT. The battery, based on electrodes made of sodium and nickel chloride and using a new type of metal mesh membrane, could be used for grid-scale installations to make intermittent power sources such as wind and solar capable of delivering reliable baseload electricity.The findings are being reported today in the journal Nature Energy, by a team led by MIT professor Donald Sadoway, postdocs Huayi Yin and Brice Chung, and four others.Although the basic battery chemistry the team ...
  • viewed: 36
    update at: 2018 - Mar - 29
    Proponents of clean energy will soon have a new source to add to their existing array of solar, wind, and hydropower: osmotic power.BY ANTHONY CUTHBERTSON ON 7/14/16 AT 4:03 AMRiver mouths around the world may soon provide an abundant new source of clean energy after scientists developed an efficient system to generate electricity from salt water.Research published this week in the journal Nature outlines how significant amounts of power can be generated from a natural phenomenon that occurs when fresh water comes into contact with seawater through a membrane.The process of osmosis that occurs can be harnessed to capture the electrical charge of the salt ions that travel through the membrane to balance the concentrations in each liquid.“We had to first fabricate and then investigate the op...
  • viewed: 17
    update at: 2018 - Mar - 29
    A graphene-based membrane could be used in countries that do not have the financial infrastructure to fund large desalination plants.BY ANTHONY CUTHBERTSON ON 4/4/17 AT 9:27 AMScientists have created a sieve capable of removing salt from seawater using the “wonder material” graphene.Researchers at the University of Manchester developed a graphene membrane to desalinate water and make it drinkable, offering the promise of easy and accessible potable water for millions of people around the world.A study published in the journal Nature Nanotechnology describes how the filtration system works by precisely controling the membrane’s pore size to sieve common salts out of salty water. “Realization of scalable membranes with uniform pore size down to atomic scale is a significant step forward...
Media Reports
  • viewed: 2327
    update at: 2016 - Oct - 21
    Recently, an international team of researchers from Tel Aviv University in Israel, the Hebrew University in Jerusalem and the University of Newcastle in the United Kingdom has developed a film containing carbon nanotubes and nanorods that could be used as a wireless implant to induce photostimulation in the retina. Related papers were published in the recent nano express.Light shining on the retina behind the eye is the first step in the visual process, according to a recent report on the Physicist Network. If the macular degeneration causes the photoreceptors on the retina to degenerate, the retina will no longer respond to light, causing the patient to lose all vision. But if the retina can be sensitized again with the help of a photoelectric implant, the patient may regain vision.At pre...
  • viewed: 2327
    update at: 2018 - Nov - 30
    From October 19 to 21, 2015, "China-EU Symposium on Membrane Technology Research and Application 2015" was held at Baohai Hotel, Weihai City, Shandong Province. The conference was jointly sponsored by the International Cooperation Department of the Ministry of Science and Technology of China, the Shandong Science and Technology Department, the Weihai Municipal People's Government, the Chinese Academy of Sciences, the Chinese Academy of Engineering, the European Membrane Society, the Research Center of Membrane Technology of the Italian National Academy of Sciences, and the China Membrane Industry Association. The Weihai science and Technology Bureau, Harbin Institute of Technology and the editorial department of membrane science and technology jointly undertake. A total of 183 sc...
  • viewed: 2327
    update at: 2018 - Oct - 10
    Nanotechnology: scientists have discovered a breakthrough material: graphene!Stone crystal. The novel two-dimensional material was obtained from graphene (a single layer of carbon atoms) by connecting hydrogen atoms (red) to each carbon atom (blue) in the crystal.Researchers at the University of Manchester have developed a breakthrough new material, graphene, from graphene.Graphene, a single-atom-thick crystal with unusually high conductivity, was discovered at the University in 2004 and soon became one of the hottest topics in physics and materials science. It also applies to many future applications of electronics and photonics. But research published today (Friday, January 30, 2009) by Professor Andre Geim and Dr. Kostya Novoselov suggests that it may be far more useful than the team th...
  • viewed: 2327
    update at: 2017 - Feb - 12
    An Australian research team headed by two young Chinese and Korean doctors has developed a method to produce graphene, a nanomaterial 200 times harder than steel, from soybean oil eaten in daily life, which greatly reduces commercial production of graphene, according to the Sing Tao Daily. The cost of future materials.One of the co-authors of the study, Zhao Junhan, a Chinese-American from the Australian Academy of Sciences (CSIRO), said that this way of making graphene could produce the nanomaterials faster and cheaper than other methods developed by scientists around the world.The research results were published in Nature Communications magazine recently.Dr. Zhao Junhan said the method could use low-cost raw materials such as vegetable oils, such as soybean oil heated in a tubular furnac...
Application A list of successful cases of innovative development
Cases / Cases More
Add time: 2018 - 03 - 13
viewed: 11
AAO on Al substrate has honeycomb-like structure, composed with hexagon column of Al2O3, with a circular pore in the center. At the end of the pore, there is a half-sphere shape barrier layer oxide layer in contact with aluminum. The porous oxide film contains mutually parallel cylindrical pores extending from the barrier oxide layer to the film surface. So AAO on Al substrate is suitable to fabricate polymer nanowires or nanotubes.Fabrication of polymer nanowires or nanotubesFabrication of polymer nanowires or nanotubes by (a) heat- and pressure-driven nanoimprint and (b) polymer solution and pore wetting.Reference:Science, 2002, 296, 1997;ChemPhysChem, 2003, 4, 1171-1176; Langmuir, 2004,20,7665-7669.Nano Lett., 2007, 7, 183; Journal of Nanomaterials, 2009, doi:10.1155/2009/4363...
Add time: 2018 - 03 - 13
viewed: 1
Application of Isotropic AAO templatesFabrication of metal nanowiresFig. 3.1 General scheme for electrochemical deposition (ECD) of materials into porous AAO.In general, to synthesize nanowires, the same general procedure can be applied irrespective of the materials to be deposited (Fig. 3.1). First, a thin Ag layer is deposited onto one face of an AAO membrane. This Ag layer serves as the working electrode in the deposition of desired materials. Next, a thin layer of sacrificial Ag (or Ni) is electrochemically deposited into the pores. After that, the desired material is electrochemically deposited. The resulting nanowires/AAO composite sample then is dipped into HNO3 solution to remove the Ag working electrode layer and the sacrificial layer (Ag or Ni). The nanowires can be collecte...
Add time: 2018 - 03 - 13
viewed: 5
Next-generation non-volatile memory needs fast operating speed, low power consumption, and good electrical reliability. Scaling is also very important for high-density data storage. Resistive switching random access memory (ReRAM) and the related memristors are promising candidates for next-generation non-volatile memory because of its simple metal–insulator–metal (MIM) structure and superior scalability. In addition, ReRAM has multilevel data storage capability.In 2016, Ji-Min Song and Jang-Sik Lee reported the fabrication of resistive switching memory devices with nano-template-assisted bottom up growth. The electrochemical deposition was adopted to achieve the bottom-up growth of nickel nanodot electrodes.Fig. 1 Schematic procedure for nano-scale resistive switching random access m...
Add time: 2018 - 03 - 14
viewed: 3
Multiferroic magnetoelectric (ME) composites exhibit sizable ME coupling at room temperature, promising applications in a wide range of novel devices. In 2016, Xiaoyan Zhang et al. explored the well-ordered array of isolated epitaxial BiFeO3/CoFe2O4/SrRuO3 heterostructured nanodots fabricated by nanoporous anodic alumina (AAO) template method. A schematic of the fabrication process is illustrated in Fig. 1a, which involves three steps: AAO mask transfer (i), materials deposition by PLD (ii), and mask removal (iii). The AAO mask was removed by mechanical or chemical liftoff, thus leaving the nanodot array alone. The thickness of AAO film is about 250 nm. The nanodots exhibit an average lateral size of ~70 nm and neighboring dot−dot distance of ~110 nm. It was found that the heterostruc...
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About Us
Become the leader of the world's new material filter industry
Shenzhen Topmembranes Technology Co., Ltd.
Shenzhen Topmembranes Technology Co., Ltd. is a hi-tech enterprise specializing in research and development and preparation of high-end membranes, integrating research and development, production and sales. The company is located at the Shenzhen economic zone, the frontier of China's economic opening.The company's tenet is realistic and innovation. It is committed to applying cutting-edge micro-nano technologies to prepare high-end membranes’ components that are widely used in high-precision chemical, medical, biopharmaceutical, environmental monitoring, food, beverage and water treatment, and air purification. The company has strong technical strength. The company's technical leaders have made outstanding contributions in the areas of micro and nano manufacturing, memb...
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