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Ny superlinse kan gøre elektronik endnu mindre

- Via New Scientist - Technology - , redigeret af Pernicious

En normal linse kan maksimalt fokusere lys ned til det halve af dets bølgelængde, da dette er diffraktionsgrænsen, hvilket f.eks. sætter en naturlig grænse for, hvor småt man kan lave transistorer med [url=Litografi]litografi[/url].

Ved at bruge metamaterialer kan diffraktionsgrænsen omgås, problemet med disse materialer er, at de har været meget svære at producere, indtil nu.

Forskerne Anthony Grbic, Lei Jiang og Roberto Merlin fra University of Michigan i Ann Arbor, US, har opfundet en metode til at lave metamateriale, der kan laves med den samme proces, der i dag bruges ved chipfabrikation, fotolitografi.

Ved at bruge fotolitografi har forskerne lavet en linse bestående af en række små kondensatorer samlet som i en sandwich. Når en elektromagnetisk bølge passerer sandwichen af kondensatorer, fokuseres den til en 20. del af dens bølgelængde.

Den nuværende prototype bruger mikrobølgestråler, da deres bølgelængde er længere end lys, men ved at ændre på størrelsen af kondensatorerne, kan linsen tilpasses til andre bølgelængder.

Den nye superlinse kan også bruges til trådløs energioverførsel, da den kan bruges til at skabe elektromagnetiske stråler med en høj energitæthed.





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Gravatar #1 - f-style
25. apr. 2008 13:43
Ja denne Hr. Merlin kan syneligt trylle med hans hænder.

Godt fremskridt, det skal helt sikkert medføre nogle dejlige teknologier i fremtiden som er meget små :)
Gravatar #2 - Bermann
25. apr. 2008 13:51
Det mest interessante i denne nyhed er efter min mening klart at man kan overfører energi trådløst - skide smart hvis man ku slippe fuldstændig for ledninger.
Gravatar #3 - Lobais
25. apr. 2008 13:56
#2: Ja, indtil du kommer til at gå ind i mellem.
Gravatar #4 - GhOstFaCE1
25. apr. 2008 14:01
jeg har bygget en rumraket
Gravatar #5 - f-style
25. apr. 2008 14:15
#3
du mener at der så kommer en stegt kylling på bordet den dag :P
Gravatar #6 - MathiasLM
25. apr. 2008 14:28
"sandwich" var nok et af de ord, jeg ikke regnede med at se i den artikel...
Gravatar #7 - GhOstFaCE1
25. apr. 2008 14:30
"This is the voice of Vrillon, a representative of the Ashtar Galactic Command, speaking to you. For many years you have seen us as lights in the skies. We speak to you now in peace and wisdom as we have done to your brothers and sisters all over this, your planet Earth. We come to warn you of the destiny of your race and your world so that you may communicate to your fellow beings the course you must take to avoid the disasters which threaten your world, and the beings on our worlds around you. This is in order that you may share in the great awakening, as the planet passes into the New Age of Aquarius. The New Age can be a time of great peace and evolution for your race, but only if your rulers are made aware of the evil forces that can overshadow their judgments. Be still now and listen, for your chance may not come again. For many years your scientists, government and generals have not heeded our warnings; they have continued to experiment with the evil forces of what you call nuclear energy. Atomic bombs can destroy the Earth, and the beings of your sister worlds, in a moment. The wastes from atomic power systems will poison your planet for many thousands of your years to come. We, who have followed the path of evolution for far longer than you, have long since realized this - that atomic energy is always directed against life. It has no peaceful application. Its use, and research into its use, must be ceased at once, or you all risk destruction. All weapons of evil must be removed. The time of conflict is now past. The race of which you are a part may proceed to the highest planes of evolution if you show yourselves worthy to do this. You have but a short time to learn to live together in peace and goodwill. Small groups all over the planet are learning this, and exist to pass on the light of the dawning New Age to you all. You are free to accept or reject their teachings, but only those who learn to live in peace will pass to the higher realms of spiritual evolution. Hear now the voice of Vrillon, a representative of the Ashtar Galactic Command, speaking to you. Be aware also that there are many false prophets and guides operating in your world. They will suck your energy from you - the energy you call money and will put it to evil ends giving you worthless dross in return. Your inner divine self will protect you from this. You must learn to be sensitive to the voice within that can tell you what is truth, and what is confusion, chaos and untruth. Learn to listen to the voice of truth which is within you and you will lead yourselves on to the path of evolution. This is our message to our dear friends. We have watched you growing for many years as you too have watched our lights in your skies. You know now that we are here, and that there are more beings on and around your Earth than your scientists admit. We are deeply concerned about you and your path towards the light and will do all we can to help you. Have no fear, seek only to know yourselves, and live in harmony with the ways of your planet Earth. We of the Ashtar Galactic Command thank you for your attention. We are now leaving the plane of your existence. May you be blessed by the supreme love and truth of the cosmos."
Gravatar #8 - luuuuu
25. apr. 2008 14:35
#7

jeg loggede på bare for at rate dig totalt irrelevant. FYI!
Gravatar #9 - Sugardad
25. apr. 2008 16:43
Så vidt jeg har forstået vil det her faktisk betyde, at man kan tage billede, så de fucking billeder endelig ligner det man ser irl. i hvert fald mere eller mindre? For jeg er fandme træt af at skulle tage billede efter billede, når man finder et eller andet RL, og så ændrer kameraet fuldstændigt på lyset.
Gravatar #10 - Törleif Val Viking
25. apr. 2008 16:54
#9
Gider du uddybe nærmere?

/OT
Mon ikke vi ser en pænt vild laser ud fra dette princip?
Gravatar #11 - e-ddie
25. apr. 2008 17:07
Man kan al elektronik mindre allerede nu. Man skal blot vende kikkerten om, så bliver alting mindre
Gravatar #12 - Zyprezz
25. apr. 2008 17:35
2+3#
vi har kunne overføre energi trådløst i lang lang lang tide

magnetisme
photonisk
Gravatar #13 - kodekarlen
25. apr. 2008 19:50
Off topic : #7 Hvad er du på?
Gravatar #14 - MVR
25. apr. 2008 19:51
Så behøver man heller ikk hardiske mere, bare tag dit 1TB USB stick frem :P

#7

Håber for dig det der bare var spam...
Gravatar #15 - mbs
28. apr. 2008 16:35
Linket med litograf virker ikke.
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