CVD Graphene on Si 1cmx1cm
SKU: 5962512478

CVD Graphene on Si 1cmx1cm

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CVD Graphene on Si 1cmx1cmProduct Name Name: CVD Graphene on Si 1 cmx1 cm Product Overview The process of preparing graphene by CVD mainly includes three important influencing factors: substrate, precursor, and growth conditions. Among them, the substrate is an important condition for the growth of graphene. Currently, 8 10 transition metals (such as Fe, Ru,Co,Rh,Ir,Ni,Pd,Pt,Cu,Au), And alloys (such as Co Ni, Au Ni, Ni Mo, stainless steel). The mechanism of preparing graphene

Product Name Name: CVD Graphene on Si 1 cmx1 cm Product Overview The process of preparing graphene by CVD mainly includes three important influencing factors: substrate, precursor, and growth conditions. Among them, the substrate is an important condition for the growth of graphene. Currently, 8-10 transition metals (such as Fe, Ru,Co,Rh,Ir,Ni,Pd,Pt,Cu,Au), And alloys (such as Co Ni, Au Ni, Ni Mo, stainless steel). The mechanism of preparing graphene by CVD varies among different substrate materials, mainly divided into two preparation mechanisms: carburization and carbon deposition mechanism, which involves the infiltration of cracked carbon into the substrate at high temperatures and the formation of graphene on the surface during rapid cooling; The surface catalytic mechanism refers to the formation of graphene on the surface of carbon after cracking at high temperatures when it comes into contact with a specific metal (such as copper), and protects the sample from further deposition of thin films. Therefore, this mechanism is more likely to form single-layer graphene. In practical applications, the synthesis method of CVD graphene film may vary depending on specific experimental requirements and conditions. Researchers typically optimize and adjust the synthesis process based on target performance and application scenarios. Meanwhile, new synthesis methods and technologies are constantly developing and exploring to improve the quality and performance of graphene films. Usually, graphene is first grown on a metal substrate, then spin coated with PMMA and transferred onto substrates such as silicon oxide, quartz, glass, PET, or copper mesh. Technical Parameter Size: 1 cm x 1 cm Number of layers: Single layer, 2 layers, 3-5 layers,6-8 layers Product Features High quality: with high purity and crystallinity; Good electrical performance: high carrier mobility and low resistivity; High transparency: has good transparency for visible light; High mechanical strength: has good flexibility and tolerance; Good chemical stability: exhibits good stability at room temperature. Application Fields Electronic devices: such as field-effect transistors, capacitors, etc; Optical components: transparent conductive films, touch screens, etc; Sensors: chemical sensors, biosensors, etc; Energy sector: such as solar cells, supercapacitors, etc; Composite materials: Composite with other materials to enhance performance. Related Information Please e-mail for the detailed characterization data. E-mail:[email protected]

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SKU: 5962512478

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4.4 ★★★★★
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Michael P. Lefand
Belleville, US
★★★★★ 5
Superman, Superboy, Supergirl, Krypto, a little of everything.
"Superman in the Fifties" is a collection of 17 stories from 1950 to 1959 reprinted in color. For me it was a nostalgic return to when I was a child and able to purchase 10 comics for a dollar off a turning rack (no sales tax either) at the local soda shop. The comics from the fifties served as an escapism for much of the youth at the time that was coming of age with the awareness that we could be threatened by nuclear attack at any time. Bomb shelter construction could be found in Popular Science magazines, and drills were performed in schools with students going into halls and crouching down and covering their heads or hiding under desks. A hero was needed, one with super powers who could make the world right. We could all dream. Superman, "Faster than a speeding bullet, more powerful than a locomotive, able to leap tall buildings in a single bound...fighting a never ending battle for truth, justice, and the American way." Sorry, just had to put that TV intro in from the 50's. The stories may seem dated, but that is part of the mystique of reading comics that are reprinted. The titles in this volume are: - Three Supermen From Krypton! - The Menace From The Stars! - The Girl Who Didn't Believe In Superman! - Superboy's Last Day In Smallville! - The Ugly Superman! - Superman's Big Brother! - The Super-Dog From Krypton! - Titano, The Super-Ape! - The Supergirl From Krypton! - Superman's Super-Magic Show! - The Super-Duel In Space - The Battle With Bizarro! - The Bride Of Bizarro! - The End Of The Planet! - Superman And Robin!! - The Stolen Superman Signal - The Girl In Superman's Past My favorite was "The Super Duel in Space" with Brainiac reducing some of Earth's cities and putting them in bottles. It was a good change up from the usual fiction, and non-fiction that I read. It provides plenty of background about Superman for young readers with terrific art that was hand drawn, unlike most modern comics that are created on computers. The stories are a very good sampling of "Superman" from the fifties. I look forward to reading "Superman in the Sixties." I give "Superman in the Fifties" 5 stars.
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Reviewed in the United States on September 15, 2011
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David W. Nesbitt
Birmingham, US
★★★★★ 5
This is perfect - I just wish they would reprint all of the 1950's and 60's stories!
This is great - wish I had more Superman stories from the 1950's to read!! I was born in 1952 so this is something right up my alley. I am a big Superman fan and had most of the mid to late 1950'2 issues until my mom burned them when I went away to college. I understand why but still wish I had them - for many different reasons. The coloring is bright and spot-on. I even remember most of these stories - I know it's been more than 50 years ago but they were a big part of my early life. All of the stories are least good and couple are truly great. Some of the plots are little silly by todays standards but things have most definitely changed since they were written. IF you love Superman, grew-up in the 50's or just anything historical you will love this! I just wish they would reprint all the 50's and 60's stories. That is something I would most certainly buy!! My rating for this is a perfect 10 out of 10 - for me it's perfect - all I want is MORE of this!!
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Reviewed in the United States on June 21, 2016
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M. Crowley
Grantham, US
★★★★★ 5
Superman in the wacky '50s
Format: Paperback
Love the Jerry Ordway cover, although an image from the era would have been more fitting. This may be the Superman era most of remember best, the gimmick-laden Weisinger era that made the most contributions to Superman lore. For me the best story here is the first one, in which the other survivors of Krypton's demise -- Kryptonian (here called "Kryptonites") super criminals U-Ban, Mala and Kizo -- appear for the first time. Other firsts include the first Brainiac tale, Supergirl's first appearance, and "The Last Superman of Krypton." Krypton did not play a big role in 1940s Superman stories. Curiously, Brainiac looks as we've come to know him on the cover of that comic, but less so inside. This is a decent sampling of '50s Superman tales. Much here to enjoy!
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Reviewed in the United States on May 23, 2025
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Prilo
San Leandro, US
★★★★★ 4
A great read
Format: Kindle
Great stories from the fifties that I did not know existed until I opened this book. I hope there are more stories to come.
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Reviewed in the United States on December 8, 2023
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Doctor Moss
Phoenix, US
★★★★★ 5
Just for Fun
You can't help, in reading these stories, remarking on how comics (and popular culture in general) reflect what we want on our minds and how we want to feel about ourselves. Superman today is intense. He fights apocalyptic battles, and he sometimes loses! There's a lot at stake -- everything, EVERYTHING, lies in the balance. Superman himself seems literaly beyond human. In order to live the life of challenges he faces, he must be beyond the concerns of everyday life -- he can't really share in the life that the rest of us live. Superman in the fifties lived in a much more comfortable, stable world, and his own life was much more continuous with ours. In these stories, he discovers that he is not alone -- his long last pal, Krypto, shows up, and he discovers his cousin, Supergirl. He has girlfriends -- Lana Lang and Lois Lane compete for his attention (without a lot of the psychological anxiety that Superman will face in the future over his inability to live a normal life and raise a normal family). The villains, like Lex Luthor, aren't even purely evil -- they have their limits. Bizarro is not evil at all, just . . . dumb and amusing so long as Superman can repair any damage he does. It's a little bit trivial to point out how comics reflect cultural reality, but . . . they do. It's fun to revisit the fifties here -- i suspect it's not so much an innocent age as one in which the story we told ourselves about ourselves (as in our Superman comics) was focused where we wanted it to be focused -- family, friends, the pleasures of everyday life. But, putting aside all the sociology and pretenses of cultural history, these stories are just fun to read. It's not the Superman we know now, it's just different, a change of pace, fun.
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Reviewed in the United States on September 28, 2013

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