Recently, the State Key Laboratory of Applied Optics of the Changchun Institute of Optics, Chinese Academy of Sciences has used the lyotropic liquid crystal soft template for the first time in the world to controllably grow a large area of ​​uniform and highly active surface Raman scattering enhanced substrate, and the enhancement factor has reached the international advanced level. Related results were published in the recent Scientific Reports.
Surface Raman scattering enhancement is a technique that can significantly increase the sensitivity of Raman spectroscopy. Usually, rare metal nanostructures are used to prepare surface Raman scattering enhanced substrates, but there are currently many preparation methods such as etching and seed growth. Laws and various chemical deposition methods are not ideal. There is no systematic solution to the problems of long time, poor repeatability, high costs, and uncontrollable issues. Therefore, the development of a new simple low-cost controllable growth method has important application value for the development of surface Raman scattering technology.
This work utilizes the three-phase lyotropic liquid crystal soft template combined with the synergistic self-assembly growth principle to controllably prepare a large-area uniform nano-silver surface scattering enhanced substrate. The sodium succinate, paraxylene and silver nitrate solution were mixed according to the three-phase diagram. The phase separation occurred at the appropriate temperature. The hydrophilic side of the sodium succinate molecule was brought close together and the silver nitrate solution was confined to it. The hydrophobic end was outward. Combined with paraxylene. The localized silver ions at the hydrophilic end crystallize and nucleate during the electrochemical deposition process, gradually grow up, eventually breaking the bond of the liquid crystal soft template, and growing into a flower-shaped structure under the synergy of the self-assembly effect.
The nanostructures have more tips and crevices and can form a large number of "hot spots" to achieve enhanced Raman scattering and enhanced fluorescence. The method has the advantages of simple process, low cost, repeated model, controllable morphology, and easy growth over a large area, and provides a new research idea for surface Raman scattering enhancement and preparation of a fluorescence enhanced substrate, and can be widely used in food safety, Environmental protection, biochemical testing and other fields have laid the foundation for mass industrial production. The research work was supported by funds from the National Natural Science Foundation and other projects. (Li Rong reporter Zhang Zhaojun)
10W Mini Glue Gun Ptc Heating Features:
1. Versatile
2. Easy
3. Quick
4. Proective Nozzle Cover
5. Trigger Flow Control
6. Bonds instantly
7. High quality
8. High temperature or low temperature
Idea for many applications. Fastening various materials such as paper, cardboard, fabric,wood, lace,trims,leather,metal,glass, tiles, rubber, ceramics and flooring etc. Ideal for hobby and household repair,DIY&craft projects.
Designed and manufactured to the highest of standards to ensure a robust and long life, we hope it provides you with many years of trouble-free, safe and reliable service.
General Safety Information:
1. Check if the plug cord was in good condition, and if there is stand before plug into the electrical outlet ; Check if the used glue gun has glue flow through back of the tunnel;
2. wait 5-10 minutes to allow glue to soften, stand up the glue gun on the table when not in use;
3. Touch nozzle to any clean, dry surface you wish to bond, to avoid any impurity stop the nozzle;
4. If the glue could not flow from the nozzle when the glue gun start to work, check if the glue gun are heating;
If glue
gun can not be heated, there are following reasons:
1
Plug cord into electrical outlet not
properly;
2
Glue gun has been destroyed owing to
inner cord short circuit;
If glue gun can be heated, there are following reasons: Nozzle has been stopped by any impurity, ask careerman to manage it.
5. Do not use the glue gun under moist climate, humidity will affect insulation and cause electric shock;
6. Do not touch the nozzle or melted glue;
7. Do not remove out the melted glue stick from the tunnel back side, it will damaged the glue gun as well as scalding person hands.
8. Do not to disassemble or assemble any glue gun accessories freely, it will cause glue gun do not work properly;
9. Keep out of reach of children and stocked it beyond any of Children palpable side;
10. Only used for melting glue stick, no other usage;
11. When in use, there are any glue flow back from tunnel, stop using immediately, wait for careerman clean the glue;
12. Close the power if the glue gun not in use after 15 minutes;
Important Caution:
1． Before use the glue gun, check if the plug cord into electrical outlet properly;
2． When glue gun in first use, the heating element will have small smoke, it is normal situation, but the smoke will disappeared after 10 minutes;
3． After power, not for a long time in standby mode(not longer for 20 minutes), when the suspension of use, unplug first.
4． Avoid to use the glue gun under very hot or very cold environments.
5． Better not work under direct cold wind blowing, it will reduce efficiency and loss power
6． When in continuous using, do not press the trigger with great pressure, and try to squeeze out the un-melted glue, it would damage the glue gun
7． Not applicable for bonding heavy objects or objects needed strong adhesive
8． The quality of glue stick will directly influence the glue gun function and sticking objects quality;
9． If the power cord is damaged, do not replace it by yourself, must ask for professionals to replace it.
10． This tools must b e placed in its position when not in use. And storage before the tools complete cooled.
11． Be careful when using any other electrical appliance with flammable material.
12． Not applicable for a long time in the same place.
13． Do not use an explosive gas atmospheres.
14． Note that heat may be the line of sigh, combustible materials.
15． Do not leave equipment unattended when switched on.
16． This appliance is not intended for use by persons(including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
17. Children should be supervised to ensure that they do not play with the appliance.
Using methods
1. Glue gun using voltage is 110-220V AC,50/60Hz;
2. Tip gun forward on stand and place a piece of cardboard under the nozzle
3. Use 7-8mm
(mini trigger glue gun), 11-12(big trigger glue gun), insert glue sticks
through
tunnel at back of gun
4. After power, wait for 5-10 minutes to allow glue to soften
After glue softens, squeeze trigger to feed glue through glue barrel. Excessive force will damage glue gun. Put down nozzle after work, disconnect the power plug
Mini Glue Gun
10W Mini Glue Gun, Mini Glue Gun, Small Glue Gun, Electric Glue Gun
Ningbo Kingvos Electrical Appliance Co.,Ltd , http://www.kingvos.com