SKU: 53718282478

Single Layer Graphene dispersion(PVP)

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Description

Single Layer Graphene dispersion(PVP)Product Name Name: Single Layer Graphene dispersion water Product Overview Graphene is a two dimensional carbon nanomaterial composed of carbon atoms in a hexagonal honeycomb lattice, with numerous unique properties, widely used in various fields. The research on graphene can be traced back to 1948, when Austrian scientists Russ and Wager were the first to use transmission electron microscopy to capture images of a small amount of graphene layers. In

Product Name

Name: Single Layer Graphene dispersion water

 

Product Overview

 

 

 

Graphene is a two-dimensional carbon nanomaterial composed of carbon atoms in a hexagonal honeycomb lattice, with numerous unique properties, widely used in various fields. The research on graphene can be traced back to 1948, when Austrian scientists Russ and Wager were the first to use transmission electron microscopy to capture images of a small amount of graphene layers. In 2004, British scientists Andrei Geim and Konstantin Novoselov successfully peeled off a single layer of graphene, which attracted widespread attention and won them the 2010 Nobel Prize in Physics.

Graphene is a two-dimensional carbon element, and single-layer graphene is composed of single-layer carbon atoms. Each carbon atom is connected in sp ² hybrid form to form a hexagonal honeycomb like two-dimensional structure. The C-C bond length in graphene is about 0.142nm, the bond angle is 120 °, and the thickness is only 0.35nm.

Graphene is currently one of the strongest known materials, with excellent mechanical, electrical, and optical properties. It has a low resistivity and superior conductivity, and the quantum Hall effect can be observed at room temperature. In addition, graphene also possesses transparency and nonlinear optical properties.

The reactivity of graphene is mainly concentrated at the boundary groups and planar defects. It can be oxidized at high temperatures or react with oxidizing acids to produce products such as CO and CO â‚? Graphene can also be connected to oxygen-containing groups to generate graphene oxide, or connected to other groups to generate corresponding derivatives.


Technical Parameter

 

Concentration: 0.5mg/ml, 1mg/ml

Solvent: Water, Ethanol

other composition:PVP

 

 

Application Fields

 

 

The theoretical application fields of graphene include but are not limited to the following aspects:
In the field of electronics, silicon can be used as a substitute for chip materials, applied in transistors, integrated circuits, flexible screens, wearable devices, solar charging, etc;
In the field of heat dissipation materials: it can be used for heat dissipation of LED lamps and other products, with a system cost reduction of at least 30%. It can also be applied for heat dissipation of smartphones, tablets, high-power energy-saving LED lighting, satellite circuits, laser weapons, etc;
In the automotive field, it can be applied to automotive lubricants, power vehicles, night vision functions, tires, etc., greatly reducing the weight of the battery and reducing the overall weight of the vehicle, extending the battery life, and greatly improving the range and charging speed of electric vehicles;
Biomedical field: can be used for biosensors, drug delivery platforms, tissue engineering, biological imaging, etc;
Military industry: can be applied in aerospace and military industries, providing endless power for interstellar exploration, satellite orbit transformation, and other fields;
Energy field: can be used for new energy devices such as lithium-ion batteries, supercapacitors, solar cells, etc;
Composite materials field: can be used to produce new generation polymers and composite materials with stronger performance;
Sensor field: can be used for the diagnosis of glucose, cholesterol, hemoglobin, and cancer cells, and can also be used as a pH sensor to detect pollutants;
Coating field: can be used on various surfaces from glass to metal to improve corrosion resistance, new generation waterproof equipment, etc;
Conductive printing and packaging field: It can provide high conductivity, flexibility, high-speed printing, and low-temperature curing, opening the door to printed electronic products for special applications.


Product Features

 

The graphene provided by Xianfeng Nano is prepared by ultrasonication of rGO with dispersant PVP in the solvent:
High single-layer rate: Composed of single atomic layers, it reduces the resistance caused by interlayer van der Waals forces, resulting in more excellent performance.
Rich functional groups: rGO has a large number of functional groups on its surface, such as carboxyl, hydroxyl, epoxy, etc., which makes it easy to react with organic compounds.
Large specific surface area: During the preparation process, a higher specific surface area is generated, which is beneficial for interacting with other substances
Excellent conductivity and thermal conductivity: Due to its excellent conductivity, rGO has potential applications in energy storage, composite materials, sensors, and other fields.


Related Information

Please e-mail for the detailed characterization data.


E-mail:[email protected]

 

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SKU: 53718282478

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4.9 ★★★★★
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Verified Purchase
Manny V.
Cuba, US
★★★★★ 5
Just perfect.
Color: Gold Havana/G-15 Green, Lens Width: 55 Millimeters
I saw this model of Ray Bans while watching Top Gun: Maverick. Actor John Hamm (Cyclone, in the movie) sported these during the beach scene. I looked for them here in Amazon and was lucky to find them for less than $100. They fit just great, and the lenses (G-15), give a clear and high definition picture. I definitely recommend them, perfect for driving, cycling, or your next F/A-18 mission.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 10, 2024
J
Verified Purchase
JackJ
Battle Creek, US
★★★★★ 5
Almost like they used to be...
Color: Gunmetal/G-15 Green, Lens Width: 55 Millimeters
These are the 3rd pair of Caravans I've owned over the years. The 1st pair were chrome frames and got mangled one time when I had set them on the trunk of the car to fill-up and drove away without them. Went back after only 100 yards or so, but by then they had been clipped by another car and were toast. Kept the lenses, sent the frame back to B&L (when they were still in Rochester -- and when customer service really WAS important to the company) and they sent back a brand-new pair of black-framed beauties -- FOR FREE! This pair recently experienced a broken frame - right at the junction of the lower curved piece that holds the lens frames together. (How this happened, I have no idea. I was wearing them. Put them in my shirt pocket. Took them out, put them on, and the lens was still in my pocket!) Now, Bausch & Lomb is owned by Luxottica (in Atlanta, GA.) Not entirely friendly, I would say, especially in the tone of the service rep's voice and bluntness. And I was told my only hope of getting any kind of satisfaction was to ship the broken pair to them and after examination they would decide whether it was a manufacturing defect or a customer caused one. Believe me -- there are NO damage marks on these black frames. The frame just cracked due to what? Fatigue, I guess. If judged in my favor they'd give me a substantial discount (40%, I believe) off list price on another pair that they might have in stock at the time. Egads! Talk about leaving you feeling helpless. NONE of the frames and lenses shown were to my liking, so I opted out of that choice and decided to search Amazon for a pair to my liking. So, this brings me to the new ones -- the subject at hand. The lenses on these are advertised as being 55mm wide, which they are. However, the original Caravans were 58mm wide = a small but perceptable difference, especially in field-of-view coverage AND how they look on your face. The G15 lenses seem to be the same tint, and the color (gun metal grey) is very nice. They fit well, and are what one would expect given the name RayBan. Therefore, I recommend them. [Footnote: As for my broken 58mm black-framed pair -- I looked up repair shops on the I-net, found 2 that seemed to talk a good game, picked one (in Cincinnati) and shipped them off today to have the frame laser welded. I am keeping my fingers crossed that they'll come back in usable shape (as promised) and I will again have my Old Faithfull's back. $35 to save a no-longer-made classic pair of RayBans is worth it in my book.]
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Reviewed in the United States on March 8, 2013
D
Verified Purchase
Daniel Tan
Belleville, US
★★★★★ 5
Classic Design!! But the 55mm frame is too small..
Color: Gunmetal/G-15 Green, Lens Width: 55 Millimeters
Really solid frame and arrived rather fast (7 days before the expected date). It included the original packaging, booklets, cloth and case (the brown one) in the original box. Was surprised that it felt quite heavy, or at least more than what Im used to, although when I wear it I can't really feel the weight. The weight also adds to the feel of it making its structure feel a little more solid that lighter sunglasses. Unfortunately, the 55mm gunmetal + green G 15 lens which I ordered, is about 6 millimetres too small at the sides for me although the lens and front frame are the right size for me and it's actually still wearable. (it's just me). I would probably get the 58mm gold + green G15 later to see if there's a big difference (shouldn't be from the measurements given). That and the fact that these are a great pair of shades with a really classic design
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Reviewed in the United States on June 30, 2016
J
Verified Purchase
J. Tant
San Leandro, US
★★★★★ 5
Iconic, but needs a few notes
Color: Gold/G-15 Green, Lens Width: 58 Millimeters
A great style, especially for those of us who don't go for the original Aviator style. But these sunglasses do need a few notes. The size on these have 58mm-diameter lenses with 15 mm between the lenses (if my decoding of the code on the side is correct. This is the largest size in this style, and even at that they are just *slightly* too small at the ears for my head. For context, the Ray Ban Wayfarer with a 50mm lens and 22m nosepiece fits perfectly. Also these, like the original Aviators, are intended to cover pretty much the entire eye socket, so if you're seeing light coming in from the side or top...they are too small for you. In other words, if you don't have a specific size head, these may not work for you and you'll be frustrated. I know it's hard to buy online since you don't get to try them on. OTOH, it's a little unethical (in my opinion) to go to a brick-and-mortar store just to try them on so you can turn around and buy them off of Amazon. DIYD and all that. Assuming the fit is acceptable, these are very well made sunglasses. They just *feel* like quality and the lenses are fantastic. There is some concern on Amazon about some Ray Bans being fakes. The pair I received are the real thing - look for the etched R-B on the left lens (not the lens with the white logo on it), the R-B logo on the nosepieces, the lenses being made of glass (not plastic) and the identifier engraved on the underside of the bridge...these are indicators that you have a genuine pair in your hands. I purchased directly from Amazon, not a "fulfilled by Amazon" purchase, so caveat emptor on that score. All in all, an outstanding pair of glasses at a good price.
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Reviewed in the United States on August 13, 2013
V
Verified Purchase
Val Brand
Phoenix, US
★★★★★ 5
The Real Deal, get them
Color: Gold/G-15 Green, Lens Width: 55 Millimeters
Lets me start by saying I love glasses and not only that, I am loyal to the multiple pair that I own. That being said I was pretty pissed when some punk kid stole my bag off the beach with my favorite pair, which was a pair called the tonette by electric visual. Great glasses, light, stayed on the face, and looked good but this time around I wanted something a little different. I had seen a pair of these worn around only once and I noticed they werent the over worn aviator style, one of the reason I got these, and immediatly fell in love. Went to the mall the next day and wasnt too surprised when the guy said "for you ill give you a nice deal and only charge you 120.00" needless to say, I gently put them down and walked out. Later that day, I ordered these for 30% off the mall price and got them 2 days later. PRAISE THE LORD FOR PRIME. PROS: -authentic ray bans -comes with the leather case which I still use 6 months after purchase -great tint -great glasses CONS: -they are a little small but fit my face fine, if your looking for a lot of coverage or have a big head...these probably arent for you -wire frame, these are my first wire frame glasses and yes they are more sensitive than my old pair but im still rocking them, if you cant baby a pair of glasses dont be surprised if you bend them little OVERALL: get these, dont be scared if you think your getting ripped off cause youre not. These are the real deal, just do it
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Reviewed in the United States on October 4, 2014

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