Metal nanostructures generate specific surface plasmon resonances when interacting with light. This kind of plasmonics based on metal nanostructures has a wide range of applications in biosensing, bioimaging, photocatalysis and solar cells. Recently, the Institute of Applied Physics, Shanghai Institute of Applied Physics, Institute of Applied Physics, Fan Chunhai Group, and Shanghai Light Source Chen Gang's Research Group have used DNA molecules to precisely control the growth of Au nanoplasma structures and use synchrotron X-ray small-angle scattering (SAXS). The technique reveals the mechanism of DNA-mediated nano-gold growth and establishes a semi-quantitative relationship between nano-gold structure and its surface plasmon resonance properties. The related results were recently published in "Angew. Chem. Int. Ed. 2014, 53, 8338-8342". Gold nanoparticles have excellent properties in biological detection, chemical catalysis and nanophotonics, and their physical and chemical properties are highly dependent on their size and surface morphology. Therefore, how to fine-tune its structure at the nanoscale has attracted the attention of researchers. DNA molecules are generally known as carriers of genetic information. However, the precise coding of DNA molecules can also provide new ideas for the field of materials. Due to the strong interaction between DNA and gold surfaces, Shen Jianlei, a graduate student of Shanghai Yingwu University, tried to use DNA to regulate the growth of the gold nanoplasma structure, and obtained a precise structure of the nanogold structure. They used the SAXS technology from the Shanghai BL21B1 station to perform in situ characterization of the different growth stages of the golden flower, and combined with the TEM to obtain the fine structure of the product during the growth of the nanogold flower under DNA regulation. Based on this, the mechanism of the growth of DNA structure mediated by DNA molecules was revealed. Using the obtained structural parameters, combined with experiments and optical simulations, the fine structure and local surface plasma of nano-gold flower were established. The semi-quantitative relationship of body (LSPR) characteristics. Further studies have shown that these nano gold flower plasma structures exhibit significant surface Raman enhancement (SERS) and dark field scattering (Dark-Field Scatter) properties, and are expected to become highly sensitive bio-imaging probes.
Automatic Sliding Doors can either be a single door sliding in one direction or bi-parting doors where each door leaf slides in the opposite direction. They are often used in grocery stores, entrances to shopping malls, hospitals and other applications where you want to provide your customers a hands free, safe and easy access to your building.
Hospitals
Airports
Retail centers
Pharmacies
Hotels
Grocery stores
Hardware stores
Sporting goods stores
And more
In addition, one of the biggest benefits of automatic doors is energy savings. Since these doors only open when someone comes in or out of your building, it prevents the loss of energy when a door may otherwise be left open for a long time.
Hongfa will only dispatch highly trained CE Certified inspector/technicians to inspect, repair, service or replace automatic doors. This ensures we provide the most efficient and safest door repair for your business.
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