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Author Topic:   transparent aluminum!!! :o
tafkact
Highlie

Posts: 614
From: nowhere, man
Registered: Jan 2000

posted February 24, 2002 10:01     Click Here to See the Profile for tafkact     Edit/Delete Message   Reply w/Quote
whoa.

Star Trek is HERE!

http://www.sci-fighter.com/news/newsfeb02/feb21aluminium.php3


http://www.spiegel.de/wissenschaft/0,1518,183008,00.html


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joliet_jane
Super Geek

Posts: 140
From: PA
Registered: Jun 2001

posted February 24, 2002 11:23     Click Here to See the Profile for joliet_jane   Click Here to Email joliet_jane     Edit/Delete Message   Reply w/Quote
Whoa! Maybe I'll one day see inside my can of Diet Mountain Dew!

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Snaggy
Moderator

Posts: 1399
From: Canada
Registered: Jan 2000

posted February 24, 2002 11:57     Click Here to See the Profile for Snaggy   Click Here to Email Snaggy     Edit/Delete Message   Reply w/Quote
WOOHOO!!!!

Roddenberry Rocks!

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BlueAntoid
Geek

Posts: 63
From: Colorado
Registered: Dec 2001

posted February 24, 2002 13:06     Click Here to See the Profile for BlueAntoid   Click Here to Email BlueAntoid     Edit/Delete Message   Reply w/Quote
HOLY MONKEY SALSA! \^o^/

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Baka
Maximum Newbie

Posts: 15
From:
Registered: Feb 2002

posted February 24, 2002 13:24     Click Here to See the Profile for Baka     Edit/Delete Message   Reply w/Quote
Unfortunately I'm sure the military will snatch it up for possible military usage.

Which might mean we have a long wait for commercial implications

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Yawn, Boring

Baka

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Janeway
Super Geek

Posts: 234
From: Cyberspace, Delta Quadrant
Registered: Sep 1999

posted February 24, 2002 18:03     Click Here to See the Profile for Janeway   Click Here to Email Janeway     Edit/Delete Message   Reply w/Quote
Didn't you know transparent aluminum was invented back in the late 80's when Kirk needed a whale tank?

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macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 24, 2002 19:17     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
yippy. but it took all that time for that guy to make it. I mean scotty gave him the design for it. But i am still happy.
Nayt

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Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

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ZorroTheFox
SuperBlabberMouth!

Posts: 1117
From: Milton, WA, USA
Registered: Oct 2001

posted February 24, 2002 20:17     Click Here to See the Profile for ZorroTheFox   Click Here to Email ZorroTheFox     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by joliet_jane:
Whoa! Maybe I'll one day see inside my can of Diet Mountain Dew!

I have seen the contents of Diet Mt. Dew, it ain't pretty. Now regular Mt. Dew I could live with ...........Z

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Iain-F
Newbie Larva

Posts: 4
From: Sheffield, UK. The original Steel City
Registered: Feb 2001

posted February 24, 2002 22:16     Click Here to See the Profile for Iain-F     Edit/Delete Message   Reply w/Quote
Gaaaakkk!

This isn't transparent "Aloomi-num" (sorry Mr Doohan, you had a total failure of Scottish accent there).

This is transparent (or perhaps more accurately translucent) Alumina.

In terms of the words and letters it's not much different. In terms of gross bulk chemical analysis it's not much different, just a couple of Oxygen atoms added... But trust me, as a materials scientist I can assure you that Alumina is very, very different from Aluminium.

Alumina is Aluminium Oxide, Al2O3. This is a ceramic with all the brittleness that being a ceramic implies. Aluminium is a metal, it is quite tough and ductile.

Ceramics are covalently bonded substances, relatively simple molecules in which outer shell electrons are shared equitably between a small and definitely finite number of atoms (atoms of two or more elements).

Metals have their outer electrons shared between a great many identical atoms. It's one of the things that defines a material's metallicness (or non-metallicness). This "electron sea" intereferes with the passage of light, such that a transparent metal is about as likely as a pregnant male. The electrons in a ceramic don't neccessarily interfere with the passage of light (compare Silica, AKA glass, and other ceramics), but transparency is fundamentally incompatible with one of the defining characteristics of a metal.

A transparent Alumina is quite an achievement, and undoubtedly useful, but it is most definitely not the transparent metal predicted by Star Trek. My guess is that such a thing will not be seen in my lifetime, if ever. My guess is that this transparent Alumina has been achieved by an exceptionally fine grain size in the starting powder, like grains of a size similar to the wavelength of light. Such a capability would open up the fascinating possibility of making other ceramics transparent. However these would all be ceramics. They would not be metals and would not behave like metals.

Iain

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--
Iain-F
Metals Geek

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Snaggy
Moderator

Posts: 1399
From: Canada
Registered: Jan 2000

posted February 24, 2002 22:22     Click Here to See the Profile for Snaggy   Click Here to Email Snaggy     Edit/Delete Message   Reply w/Quote
wow, neat, thanks for that Iain!

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Hikaru
Geek

Posts: 63
From: AppleDale, USA
Registered: Feb 2002

posted February 25, 2002 04:37     Click Here to See the Profile for Hikaru     Edit/Delete Message   Reply w/Quote
who cares
its transparent(ish)
its got aluminum in it
its Star Trekky goodness
Vootie!
now it better have been designed on a Mac +

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END OF LINE _

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macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 25, 2002 05:30     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
I can see Steve putting this to use in a mac in the future.
Nayt

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Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

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joliet_jane
Super Geek

Posts: 140
From: PA
Registered: Jun 2001

posted February 25, 2002 11:33     Click Here to See the Profile for joliet_jane   Click Here to Email joliet_jane     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by macadddikt18:
I can see Steve putting this to use in a mac in the future.
Nayt


Totally! He's probably locked Ive in a shed with a sheet of it already!

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Tau Zero
BlabberMouth, the Next Generation.

Posts: 1685
From:
Registered: Jan 2000

posted February 25, 2002 11:37     Click Here to See the Profile for Tau Zero     Edit/Delete Message   Reply w/Quote
It sure would make a neat material for a case.  If it's tough enough to be used for bullet-proof windows, it might even make a laptop case (ceramic can be molded to any shape and then fired, instead of machined).

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macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 25, 2002 11:42     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
how cool would that be, a bullet proof mac. I can see it now.
Nayt

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Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

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LifetimeTrekker
Alpha Geek

Posts: 326
From: Albuquerque, NM, UD
Registered: Sep 2001

posted February 25, 2002 13:31     Click Here to See the Profile for LifetimeTrekker   Click Here to Email LifetimeTrekker     Edit/Delete Message   Reply w/Quote
Try really tough video screens. tough to scratch, puncture or burn (I hope it's heat-resistant to a high degree.)

I wonder if Paramount is going to sue for trademark infringement?

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ZorroTheFox
SuperBlabberMouth!

Posts: 1117
From: Milton, WA, USA
Registered: Oct 2001

posted February 25, 2002 18:18     Click Here to See the Profile for ZorroTheFox   Click Here to Email ZorroTheFox     Edit/Delete Message   Reply w/Quote
hopefully the new screen would be kitty friendly......Z

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macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 25, 2002 19:45     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
Hey, anyone seen the movie Sabrina with Harrison Ford. Yes it is a chick flick. and it was still a great movie. Well in the movie Harrison ford has this video screen that he liked to shoot, and it does not even scratch.
Nayt

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Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

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Sir Aureus
Geek-in-Training

Posts: 36
From: wherever my pismo happens to be
Registered: Feb 2002

posted February 25, 2002 22:01     Click Here to See the Profile for Sir Aureus     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by macadddikt18:
how cool would that be, a bullet proof mac. I can see it now.

the original (clam-shaped) iBook was bulletproof.

... well the case could stop a bullet, anyway; I'm sure a lot of the circuitry would be broken

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I'm egotistical and I'm
proud of it!

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macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted February 26, 2002 05:57     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
so are the new Ti books bullet proof. Or does the Ti need to be thicker.
Nayt

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Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

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MrMachineCode
Super Geek

Posts: 207
From: -, Oklahoma, USA
Registered: Dec 2000

posted February 26, 2002 07:26     Click Here to See the Profile for MrMachineCode   Click Here to Email MrMachineCode     Edit/Delete Message   Reply w/Quote
Okay, so if I understand this correctly, the reason you can't have a transparent metal is that the properties of the electron cloud in a metal make it so that the metal can't conduct light, and any changes to it's chemical composition that would allow it to conduct light would cause it to cease to be a true metal. Okay. But does the change have to only be in the chemical composition--can you change something else, instead? What if you cause the metal's electrons to be in some peculiar electrical or quantum state, similar but not necessarily the same as causing the material to lase? I know there's been a lot of speculation on free electron lasers; is some of that research applicable to the electrons in a metal?

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Iain-F
Newbie Larva

Posts: 4
From: Sheffield, UK. The original Steel City
Registered: Feb 2001

posted February 26, 2002 15:12     Click Here to See the Profile for Iain-F     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by MrMachineCode:
Okay, so if I understand this correctly, the reason you can't have a transparent metal is that the properties of the electron cloud in a metal make it so that the metal can't conduct light, and any changes to it's chemical composition that would allow it to conduct light would cause it to cease to be a true metal.

Correct

quote:
But does the change have to only be in the chemical composition--can you change something else, instead? What if you cause the metal's electrons to be in some peculiar electrical or quantum state, similar but not necessarily the same as causing the material to lase?

That is the kind of thing that would be required, and getting a bunch of electrons to co-operate is pretty tough, seeing as how the uncertainty principle says you can only know either where the electron is OR how fast it is going, not both. Destined to remain science fiction for some time...

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BlueAntoid
Geek

Posts: 63
From: Colorado
Registered: Dec 2001

posted February 28, 2002 21:34     Click Here to See the Profile for BlueAntoid   Click Here to Email BlueAntoid     Edit/Delete Message   Reply w/Quote
Hmm... that's what we get for translating the original site with Babelfish, I guess...

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macadddikt18
SuperBlabberMouth!

Posts: 1126
From: In a world beyond your understanding
Registered: Jan 2002

posted March 01, 2002 10:26     Click Here to See the Profile for macadddikt18   Click Here to Email macadddikt18     Edit/Delete Message   Reply w/Quote
babblefish? besides something from a Hitch Hikers guide to the galaxy what it is?
Nayt

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Through out your life you will wonder who THEY are. Then you find out who THEY really are. From then on you live you life in fear of THEM and you wish you never knew who THEY were.

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quantumfluff
Highlie

Posts: 672
From: the ether
Registered: Jun 2000

posted March 01, 2002 14:16     Click Here to See the Profile for quantumfluff   Click Here to Email quantumfluff     Edit/Delete Message   Reply w/Quote
Iain-F: First of all, a big thumbs up for Sheffield, locale of "The Full Monty", one of my all-time favorite movies.

Second, I'm curious. How is it that you pop into the forums at the exact time there is a subject you're an expert on? Is this just coincidence, or had you been a lurker for a while? Actually, what I'm really interested in is how long people lurk before starting to post. Do they just find the place and start posting, or do we have a large contingent of lurkers who don't have anything to say (or just don't want to say it)? But let's take answers in a new thread on lurking.

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ZorroTheFox
SuperBlabberMouth!

Posts: 1117
From: Milton, WA, USA
Registered: Oct 2001

posted March 02, 2002 08:18     Click Here to See the Profile for ZorroTheFox   Click Here to Email ZorroTheFox     Edit/Delete Message   Reply w/Quote
some people just need to find the right place to start posting. First impressions are important and you wouldn't want to start off on a subject that you didn't really care for.........Z

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greycat
Super Geek

Posts: 182
From:
Registered: Oct 2001

posted March 02, 2002 13:49     Click Here to See the Profile for greycat     Edit/Delete Message   Reply w/Quote
quote:
babblefish? besides something from a Hitch Hikers guide to the galaxy what it is?

http://babelfish.altavista.com/

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