Intrigued by Graphene - Printable Version
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Re: Intrigued by Graphene - 82lsju - 04-04-2017
A UK-based team of researchers has created a graphene-based sieve capable of removing salt from seawater.
http://www.bbc.com/news/science-environment-39482342
Re: Intrigued by Graphene - BostonCard - 04-04-2017
Every time this thread bubbles back up to the top, I crack a smile.
BC
Re: Intrigued by Graphene - martyup - 04-04-2017
(04-04-2017, 12:44 PM)eric link Wrote:A UK-based team of researchers has created a graphene-based sieve capable of removing salt from seawater.
http://www.bbc.com/news/science-environment-39482342
Sounds like you could make an effective survival tool from this membrane for marine applications.
Re: Intrigued by Graphene - BostonCard - 04-07-2017
https://www.levelninesports.com/head-monster-88-skis?gclid=CjwKEAjw8ZzHBRCUwrrV59XinXUSJADSTE5kizApmyBZQU48dQoElf6IvehKbSjTv8EmMVZBLFz0NRoCIZXw_wcB#product-tabs
I was looking to get myself some new skis, and saw these were highly recommended. But now that I see they "feature Graphene technology which reinforces the ski keeping it stiff and responsive but very lightweight at the same time." I'm definitely going to fall for the marketing and buy them, LOL.
Actually, they are well rated skis, and I like my 8 year old Monsters, and the after-season price is pretty good, so I may pull the trigger. I will let you guys know how well the "graphene technology" works.
BC
Re: Intrigued by Graphene - CTcard - 04-08-2017
(04-07-2017, 07:35 PM)Boston Card link Wrote:https://www.levelninesports.com/head-monster-88-skis?gclid=CjwKEAjw8ZzHBRCUwrrV59XinXUSJADSTE5kizApmyBZQU48dQoElf6IvehKbSjTv8EmMVZBLFz0NRoCIZXw_wcB#product-tabs
I was looking to get myself some new skis, and saw these were highly recommended. But now that I see they "feature Graphene technology which reinforces the ski keeping it stiff and responsive but very lightweight at the same time." I'm definitely going to fall for the marketing and buy them, LOL.
Actually, they are well rated skis, and I like my 8 year old Monsters, and the after-season price is pretty good, so I may pull the trigger. I will let you guys know how well the "graphene technology" works.
BC
Just don't read their pseudo-technical marketing blurb too closely. Highly bogus.
I am personally rather suspicious that their graphene is just graphite, though that can still be great in skis. Like my Blizzard Brahmas with graphite tips a lot - but I am an east coast skier (except at this very moment at Snowbird).
Re: Intrigued by Graphene - BostonCard - 04-10-2017
Oh believe me, I know it is BS. There was a heavy dose of sarcasm in my post, but I realize it doesn't always carry through to internet posts. As I said, I would purchase them because I like my 8 year old monsters and the price is right, not because of their "Graphene technology".
BC
Re: Intrigued by Graphene - 82lsju - 11-28-2017
Recently, a team of researchers at the Samsung Advanced Institute of Technology (SAIT) developed a graphene ball, a unique battery material that enables a 45% increase in capacity, and five times faster charging speeds than standard lithium-ion batteries. The breakthrough provides promise for the next generation secondary battery market, particularly related to mobile devices and electric vehicles.
https://news.samsung.com/global/samsung-develops-battery-material-with-5x-faster-charging-speed
Re: Intrigued by Graphene - 82lsju - 12-09-2017
UCLA chemists synthesize narrow ribbons of graphene using only light and heat
Tiny structures could be next-generation solution for smaller electronic devices
http://newsroom.ucla.edu/releases/ucla-chemists-synthesize-narrow-ribbons-of-graphene-for-next-generation-electronics
Re: Intrigued by Graphene - TreesAndBirds - 12-09-2017
https://techcrunch.com/2017/12/09/graphene-running-shoes-will-hit-the-market-next-year/
Re: Intrigued by Graphene - martyup - 12-09-2017
(12-09-2017, 01:04 PM)eric link Wrote:UCLA chemists synthesize narrow ribbons of graphene using only light and heat
Tiny structures could be next-generation solution for smaller electronic devices
http://newsroom.ucla.edu/releases/ucla-chemists-synthesize-narrow-ribbons-of-graphene-for-next-generation-electronics
Yeah, but they can't figure out how to beat Stanford in football.
![[Image: swag-gif-17.gif]](https://shaunidrought.files.wordpress.com/2014/05/swag-gif-17.gif)
Re: Intrigued by Graphene - 82lsju - 12-21-2017
Scientists Discover Process for Transitioning Two-Layer Graphene into a Diamond-Hard Material on Impact
The innovation could enable development of a range of flexible, impenetrable materials capable of protecting the body and fragile objects
http://www.asrc.cuny.edu/2017/12/18/diamene-study/
the paper is here
https://www.nature.com/articles/s41565-017-0023-9.epdf?referrer_access_token=PO5J8ViB5LDkGn066c4z6NRgN0jAjWel9jnR3ZoTv0NfRWUOIZpbQUG2MbRnZCZKIV9VuwZvMDCNXVkf-AL6jyemAIXpXW77ac6gxRiVxL8gJ_u1xRZwcDC6KTuPCl03nAwJLfa2j_BH8DAtfiZvUCa-PO4RWWyWGGNSchagA7S4yrg8kf9IbQQLhsaunbRZ-tAa0QLgxsT_7mqFQvNR5rtU7FhZXZx_k9wIiVYAhu5AB4XIflFhsW9EBpT_9ouPwZH75mfRZscUZqVLRfuHdvVLK9rzU2nFPp9VoWEHuxw-HMR97Az8hz-dlQo7Grr_OaFqw3qBH8qlOiwMamUXgw%3D%3D&tracking_referrer=www.iflscience.com
Re: Intrigued by Graphene - 82lsju - 12-21-2017
Scientists Discover Process for Transitioning Two-Layer Graphene into a Diamond-Hard Material on Impact
The innovation could enable development of a range of flexible, impenetrable materials capable of protecting the body and fragile objects
http://www.asrc.cuny.edu/2017/12/18/diamene-study/
the paper is here
https://www.nature.com/articles/s41565-017-0023-9.epdf?referrer_access_token=PO5J8ViB5LDkGn066c4z6NRgN0jAjWel9jnR3ZoTv0NfRWUOIZpbQUG2MbRnZCZKIV9VuwZvMDCNXVkf-AL6jyemAIXpXW77ac6gxRiVxL8gJ_u1xRZwcDC6KTuPCl03nAwJLfa2j_BH8DAtfiZvUCa-PO4RWWyWGGNSchagA7S4yrg8kf9IbQQLhsaunbRZ-tAa0QLgxsT_7mqFQvNR5rtU7FhZXZx_k9wIiVYAhu5AB4XIflFhsW9EBpT_9ouPwZH75mfRZscUZqVLRfuHdvVLK9rzU2nFPp9VoWEHuxw-HMR97Az8hz-dlQo7Grr_OaFqw3qBH8qlOiwMamUXgw%3D%3D&tracking_referrer=www.iflscience.com
Re:This is so Cool - unclechuck - 12-22-2017
(12-21-2017, 05:34 PM)eric link Wrote:Scientists Discover Process for Transitioning Two-Layer Graphene into a Diamond-Hard Material on Impact
The innovation could enable development of a range of flexible, impenetrable materials capable of protecting the body and fragile objects
http://www.asrc.cuny.edu/2017/12/18/diamene-study/
the paper is here
https://www.nature.com/articles/s41565-017-0023-9.epdf?referrer_access_token=PO5J8ViB5LDkGn066c4z6NRgN0jAjWel9jnR3ZoTv0NfRWUOIZpbQUG2MbRnZCZKIV9VuwZvMDCNXVkf-AL6jyemAIXpXW77ac6gxRiVxL8gJ_u1xRZwcDC6KTuPCl03nAwJLfa2j_BH8DAtfiZvUCa-PO4RWWyWGGNSchagA7S4yrg8kf9IbQQLhsaunbRZ-tAa0QLgxsT_7mqFQvNR5rtU7FhZXZx_k9wIiVYAhu5AB4XIflFhsW9EBpT_9ouPwZH75mfRZscUZqVLRfuHdvVLK9rzU2nFPp9VoWEHuxw-HMR97Az8hz-dlQo7Grr_OaFqw3qBH8qlOiwMamUXgw%3D%3D&tracking_referrer=www.iflscience.com
In Jr High I remember reading some 1950s SciFi about a society of assassins who only used knives since a fast-pressure responsive fabric had been developed that completely resisted projectiles, but could be penetrated by the slow pressure of an edged weapon. My suspension of disbelief is now formally retired; thanks!
Re:This is so Cool - unclechuck - 12-22-2017
(12-21-2017, 05:34 PM)eric link Wrote:Scientists Discover Process for Transitioning Two-Layer Graphene into a Diamond-Hard Material on Impact
The innovation could enable development of a range of flexible, impenetrable materials capable of protecting the body and fragile objects
http://www.asrc.cuny.edu/2017/12/18/diamene-study/
the paper is here
https://www.nature.com/articles/s41565-017-0023-9.epdf?referrer_access_token=PO5J8ViB5LDkGn066c4z6NRgN0jAjWel9jnR3ZoTv0NfRWUOIZpbQUG2MbRnZCZKIV9VuwZvMDCNXVkf-AL6jyemAIXpXW77ac6gxRiVxL8gJ_u1xRZwcDC6KTuPCl03nAwJLfa2j_BH8DAtfiZvUCa-PO4RWWyWGGNSchagA7S4yrg8kf9IbQQLhsaunbRZ-tAa0QLgxsT_7mqFQvNR5rtU7FhZXZx_k9wIiVYAhu5AB4XIflFhsW9EBpT_9ouPwZH75mfRZscUZqVLRfuHdvVLK9rzU2nFPp9VoWEHuxw-HMR97Az8hz-dlQo7Grr_OaFqw3qBH8qlOiwMamUXgw%3D%3D&tracking_referrer=www.iflscience.com
In Jr High I remember reading some 1950s SciFi about a society of assassins who only used knives since a fast-pressure responsive fabric had been developed that completely resisted projectiles, but could be penetrated by the slow pressure of an edged weapon. My suspension of disbelief is now formally retired; thanks!
Re: Intrigued by Graphene - ca245 - 12-22-2017
A couple of observations on the Geim-Novoselov Nobel prize for graphene. It was awarded in 2010, IIRC not that long after its discovery. If the commercial uses for graphene are not well established even now, they certainly were not back then. Usually the Nobel committee waits for the value of a discovery to be proven before awarding a prize. So the graphene Nobel was awarded unusually early. Novoselov was only 36 when he won the prize, making him one of the youngest winners ever.
Re: Intrigued by Graphene - ca245 - 12-22-2017
A couple of observations on the Geim-Novoselov Nobel prize for graphene. It was awarded in 2010, IIRC not that long after its discovery. If the commercial uses for graphene are not well established even now, they certainly were not back then. Usually the Nobel committee waits for the value of a discovery to be proven before awarding a prize. So the graphene Nobel was awarded unusually early. Novoselov was only 36 when he won the prize, making him one of the youngest winners ever.
Re:This is so Cool - Mick - 12-23-2017
(12-22-2017, 04:39 PM)unclechuck link Wrote:[quote author=eric link=topic=9890.msg218919#msg218919 date=1513902852]
Scientists Discover Process for Transitioning Two-Layer Graphene into a Diamond-Hard Material on Impact
The innovation could enable development of a range of flexible, impenetrable materials capable of protecting the body and fragile objects
http://www.asrc.cuny.edu/2017/12/18/diamene-study/
the paper is here
https://www.nature.com/articles/s41565-017-0023-9.epdf?referrer_access_token=PO5J8ViB5LDkGn066c4z6NRgN0jAjWel9jnR3ZoTv0NfRWUOIZpbQUG2MbRnZCZKIV9VuwZvMDCNXVkf-AL6jyemAIXpXW77ac6gxRiVxL8gJ_u1xRZwcDC6KTuPCl03nAwJLfa2j_BH8DAtfiZvUCa-PO4RWWyWGGNSchagA7S4yrg8kf9IbQQLhsaunbRZ-tAa0QLgxsT_7mqFQvNR5rtU7FhZXZx_k9wIiVYAhu5AB4XIflFhsW9EBpT_9ouPwZH75mfRZscUZqVLRfuHdvVLK9rzU2nFPp9VoWEHuxw-HMR97Az8hz-dlQo7Grr_OaFqw3qBH8qlOiwMamUXgw%3D%3D&tracking_referrer=www.iflscience.com
In Jr High I remember reading some 1950s SciFi about a society of assassins who only used knives since a fast-pressure responsive fabric had been developed that completely resisted projectiles, but could be penetrated by the slow pressure of an edged weapon. My suspension of disbelief is now formally retired; thanks!
[/quote]
I think you may be referring to "The Paradox Men" by Charles Harness circa 1954. Frank Herbert adopted a similar idea for "Dune."
Re:This is so Cool - Mick - 12-23-2017
(12-22-2017, 04:39 PM)unclechuck link Wrote:[quote author=eric link=topic=9890.msg218919#msg218919 date=1513902852]
Scientists Discover Process for Transitioning Two-Layer Graphene into a Diamond-Hard Material on Impact
The innovation could enable development of a range of flexible, impenetrable materials capable of protecting the body and fragile objects
http://www.asrc.cuny.edu/2017/12/18/diamene-study/
the paper is here
https://www.nature.com/articles/s41565-017-0023-9.epdf?referrer_access_token=PO5J8ViB5LDkGn066c4z6NRgN0jAjWel9jnR3ZoTv0NfRWUOIZpbQUG2MbRnZCZKIV9VuwZvMDCNXVkf-AL6jyemAIXpXW77ac6gxRiVxL8gJ_u1xRZwcDC6KTuPCl03nAwJLfa2j_BH8DAtfiZvUCa-PO4RWWyWGGNSchagA7S4yrg8kf9IbQQLhsaunbRZ-tAa0QLgxsT_7mqFQvNR5rtU7FhZXZx_k9wIiVYAhu5AB4XIflFhsW9EBpT_9ouPwZH75mfRZscUZqVLRfuHdvVLK9rzU2nFPp9VoWEHuxw-HMR97Az8hz-dlQo7Grr_OaFqw3qBH8qlOiwMamUXgw%3D%3D&tracking_referrer=www.iflscience.com
In Jr High I remember reading some 1950s SciFi about a society of assassins who only used knives since a fast-pressure responsive fabric had been developed that completely resisted projectiles, but could be penetrated by the slow pressure of an edged weapon. My suspension of disbelief is now formally retired; thanks!
[/quote]
I think you may be referring to "The Paradox Men" by Charles Harness circa 1954. Frank Herbert adopted a similar idea for "Dune."
Re: Intrigued by Graphene - Cadwallon - 12-23-2017
"Scientists Discover Process for Transitioning Two-Layer Graphene into a Diamond-Hard Material on Impact
The innovation could enable development of a range of flexible, impenetrable materials capable of protecting the body and fragile objects
http://www.asrc.cuny.edu/2017/12/18/diamene-study/
the paper is here"
I'm always a bit dubious about claims made in publications from scientist looking for more funding (all scientists including me). When one talks about impenetrability, you're talking about "toughness" or strength not hardness. Diamonds are hard because of their crystalline structure that includes conjugated (alternating with single bonds) double bonds arranged in a crystalline lattice. Materials like this can be very hard, but because of their crystallinity, can also be brittle. Diamonds can be easily cleaved. As far as I know, the strongest, toughest, most impenetrable material is elongated polyethylene, basically the same stuff that's in plastic bags, but in a higher molecular weight version. This is because the polyethylene's molecule's backbones are held together by carbon-carbon single bonds, some of the strongest atom to atom bonds known. Honeywell makes a version of this tradenamed "Spectra". Many people think that Kevlar (DuPont tradename) is the strongest material around, but elongated high molecular weight polyethylenes are considerably stronger. An interesting application of this material is for hawsers or ropes for tying up large ships since the volume and weight of the ropes on ships is significant. It is also used for the more obvious applications like bullet-proof vests and helmet liners. I have a business acquaintance who makes bullet-proof vests and had a promotional film made of his being shot wearing one. He was literally standing behind his product. He's also nuts.
Re: Intrigued by Graphene - Cadwallon - 12-23-2017
"Scientists Discover Process for Transitioning Two-Layer Graphene into a Diamond-Hard Material on Impact
The innovation could enable development of a range of flexible, impenetrable materials capable of protecting the body and fragile objects
http://www.asrc.cuny.edu/2017/12/18/diamene-study/
the paper is here"
I'm always a bit dubious about claims made in publications from scientist looking for more funding (all scientists including me). When one talks about impenetrability, you're talking about "toughness" or strength not hardness. Diamonds are hard because of their crystalline structure that includes conjugated (alternating with single bonds) double bonds arranged in a crystalline lattice. Materials like this can be very hard, but because of their crystallinity, can also be brittle. Diamonds can be easily cleaved. As far as I know, the strongest, toughest, most impenetrable material is elongated polyethylene, basically the same stuff that's in plastic bags, but in a higher molecular weight version. This is because the polyethylene's molecule's backbones are held together by carbon-carbon single bonds, some of the strongest atom to atom bonds known. Honeywell makes a version of this tradenamed "Spectra". Many people think that Kevlar (DuPont tradename) is the strongest material around, but elongated high molecular weight polyethylenes are considerably stronger. An interesting application of this material is for hawsers or ropes for tying up large ships since the volume and weight of the ropes on ships is significant. It is also used for the more obvious applications like bullet-proof vests and helmet liners. I have a business acquaintance who makes bullet-proof vests and had a promotional film made of his being shot wearing one. He was literally standing behind his product. He's also nuts.