Invisibility cloak created in 3-D

Originally posted by nik1halo
It could be used quite effectively to hunt Arnold Schwarzenegger and Carl Weathers through a Central American Jungle...

Whispers~~> Turn around, Turn around

Billy: I'm scared Poncho.
Poncho: Bull#. You ain't afraid of no man.
Billy: There's something out there waiting for us, and it ain't no man. We're all gonna die.

Sorry way off topic and its my own thread too lol

Korg.

reply to post by Korg Trinity


Yeah, sorry for the off topicness, but I couldn't resist.

"What the f*#k are you?"

Cool stuff!

I'd like some invisible cables behind my TV and on my speakers, please!
.... and a big, invisible umbrella-hat! I can stay dry, leave my hands free and not look like an idiot.

Originally posted by Bluebird69
Cool stuff!

I'd like some invisible cables behind my TV and on my speakers, please!
.... and a big, invisible umbrella-hat! I can stay dry, leave my hands free and not look like an idiot.

Thats an interesting point actually. As from what I can gather this material relies on nano structures within the material to function. Exactly how will this technology perform in the rain??

I mean surely the water would clad the material and thus rendering it useless??

If thats the case then it would seriously hamper the military usage of such a technology wouldn't it?

I wonder how they would get around this? maybe a super unreflective transparent film over the material?

all the best,

Korg.

The snippet posted referring to an article in "Science" did not mention
where the experiments took place.

Had this necessary information been given, there would not have been any
need to post outdated material.

It seems to be the first time that a 3D (not a 2 or 1 D) invisibility was
successfully achieved in the German university of Karlsruhe.

See: news.bbc.co.uk...

Originally posted by Udo Hohnekamp Lux.
The snippet posted referring to an article in "Science" did not mention
where the experiments took place.

Had this necessary information been given, there would not have been any
need to post outdated material.

It seems to be the first time that a 3D (not a 2 or 1 D) invisibility was
successfully achieved in the German university of Karlsruhe.

See: news.bbc.co.uk...

I'm confused by your post?

you link to the exact same article I did in the original post... and this is a new breakthrough, so why do you think this was old news??

And why does location of experiment have anything to do with this?

I'm confused?

Korg.

Korg, you have all reason to be confused, because you did post the same
link as I did, which explains all this forum needs to know.

Sorry for your confusion.

I don´t know, if you put that "see link" by the side of "Snippet", which I
assume.

However, the majority of readers seeing "Science" , an American
publication, mentioned, probably was led to believe it was the result
of American scientific research.

I will leave it up to the academics to regard the omission of the scientists´
and the institute´s name in the snippet or in "Science" as customary.

Therefore, following your initial post were videos from the US, Japan, UK
etc. that did not treat the subject, which confused m e.

reply to post by Korg Trinity


Korg, I appreciate the sentiment about impossibility. I suppose that what I was trying to say, is that when I was a child, and saw my first star trek episode, I didnt truely believe that the technology would even BEGIN to exist in my lifetime. It seemed so far away, when mobile phones were the size of a housebrick, that I didnt dream we could advance so far in such a short time. Even in a world which has spawned a group of scientist trying to find "God" with particle beams, it still sends shivers of anticipation down my spine, to realise that I actualy AM living in an age where the technology I have dreamed of , is closer than I ever thought possible! I suppose I was merely expressing my enjoyment of the realisation that as far as I am concerned , the future is now ! And I get to see it !

Originally posted by Udo Hohnekamp Lux.
I will leave it up to the academics to regard the omission of the scientists´
and the institute´s name in the snippet or in "Science" as customary.

Therefore, following your initial post were videos from the US, Japan, UK
etc. that did not treat the subject, which confused m e.

These days scientific breakthroughs are global, the research on any specific area is being worked on by multiple establishments in multiple countries.

Each research group contributes to the common goal; there will be a breakthrough then a dominoes effect with each research team building on the successes of the other teams.

Which country and which establishment makes a breakthrough is totally irrelevant... We live in a global village, long gone is the attitude that it was a German or English or Japanese discovery.

The reason I posted those videos was the subject matter was totally relevant to the thread... the country of origin was never in my mind. Its irrelevant where you are from these days.. Unless you live in an oppressed military state??

I am a futurist, I love to engage in the positive effects technology can have for us all. I don't see why a video about the photonic revolution that meta materials should confuse you at all... its the nature of what we are talking about here.

However, the majority of readers seeing "Science" , an American
publication, mentioned, probably was led to believe it was the result
of American scientific research.

I totally disagree, Science is a generic word that describes a field of study (physics / Biology / Chemistry etc) such as other fields of study like geography, History or language.

The fact that there is an American publication called 'Science' is a direct use of the generic word to describe the publications contents.

I hope this clears things up for you...

Now back to the topic at hand

Just how does meta materials create a negative refraction index??

This article is an interesting read..

Topology and Design of Wide-Band 3D Metamaterials

extensive research efforts are underway worldwide to create artificial materials that exhibit negative refractive index. One can classify existing approaches into two general categories, namely resonant and non-resonant periodic structures.

Among the latter category belong the periodically loaded transmission line networks that have been demonstrated in 2002 by Iyer and Eleftheriades [1], [2], Caloz and Itoh [3], and Oliner [4]. They consist of host transmission line networks with embedded lumped series capacitors and shunt inductors. These periodic structures are capable of supporting backward waves as discussed by Ramo, Whinnery, and Van Duzer [5].

Analytical, numerical and experimental studies have confirmed that these loaded transmission line models exhibit indeed the peculiar properties predicted by Veselago [6].

All the best,

Korg.