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making waves: in the hunt for invisibility, other benefits seen

by:Tuowei     2019-09-08
SINGAPORE-A new way of assembly, called supermaterials, may help protect buildings from earthquakes in the near future by bending earthquakes around buildings.
Similarly, the tsunami waves will bend around the town, and the sound waves will bend around the room to make it sound-proof.
While the Holy Grail of ultra-material is still to make the eyes invisible to objects and people, from satellite antennas to wireless charging phones, they will have a more tangible commercial impact and play a more mundane role.
Super material is a simple material that has properties that are not present in nature, such as ways of absorbing or reflecting light.
The key is how they are made.
By assembling the material-from the photon crystals to the wires and the foam-at a scale smaller than the length of the wave you are trying to manipulate, theoretically, the wave can, bend over to will.
This makes supermaterials the preferred tool for scientists to compete for various waves.
Stealth devices, including so-
Known as an invisible cloak-a covering that effectively makes something inside invisible by bending the waves around it.
David Smith of Duke University said: \"cloaking is just another thing we find-we have all the flexibility in this material, and this is another thing we can do, in a telephone interview, it was widely believed that one of the founders of the super material.
\"But we are also interested in seeing the impact of this shift on people\'s lives.
Indeed, Smith\'s own journey from the lab to the factory shows that while supermaterials have become synonymous with the \"Harry Potter\" cloak, from small communications devices to earthquakes, their commitment is more likely to be felt in a range of industries and usesProve the building.
The core of the super material and the invisible material is the curved light, which is the wave.
If it is possible to bend around an object, whether visible, microwave, or infrared, it is not visible at these wavelengths.
It has been argued that light cannot be controlled in this way with natural materials, since their optical properties depend on the chemical properties of the atoms that make them.
Until the end of 1990, when Smith and his colleagues tried to change the geometry of the material, they found that they could change the way the material interacts with light, or other supermaterials that can produce waves.
With this, said Andrea Aru, associate professor at the University of Texas at Austin, scientists have found that \"it is possible to challenge the rules and restrictions that have been considered to be written in stone for centuries.
\"Over the past decade, based on Smith\'s findings, there has been an explosive growth in research that makes objects invisible to at least some form of light.
Jason Valentine of van der Burg University said: \"There have been several invisible displays of visible wavelengths, so stealth is indeed possible and has been achieved . \"
These all have limitations, however, such as working only at a specific wavelength or at a specific angle.
But obstacles are falling rapidly, Valentine said.
For example, in the past year, Yaroslav Urzhumov of Duke University made a plastic cloak with a normal 3D printer, deflecting the microwave beam, while the Alu made a super
A thin cloak driven by current. INVISIBLE ARMY?
To fund most of this America. S.
Research is military.
Urzhumov said in an email interview,S.
The Department of Defense is one of the major sponsors of \"ultra-material and stealth research in the United StatesS.
\"The Department of Defense Advanced Research Projects Agency commissioned the Ministry of Defense for advanced research, which, according to the Ministry of Defense\'s website, has been funding supermaterial research since 2000.
Miguel Navarro said that the military interest in super-materials is mainly to make cloaks
The CIA at Imperial College London, who studied the topic with funding from the European Defense Agency and the US Department of DefenseS. military.
But cloaks are not necessarily sinister tools of war.
Valentine\'s Day in Van der Bildt is recommended for construction.
\"You can use this technology to hide the support column outside the line of sight and make the space feel completely open,\" he said . \".
Other potential uses include making the pilot invisible to the part of the aircraft so that it can be seen under the cockpit, or getting the driver out of the blind spot in the car.
Whether there is an army or not, there is a way to go.
\"Basically, most stealth cloaks are still in the research phase,\" said Ong Chong Kim, director of the Center for ultra-magnetic and magnetic materials at the National University of Singapore.
Potomson and others say that while hypermaterials may not have made the eye invisible, they can be used to redirect other types of waves, including mechanical waves such as sound waves and waves.
Earlier this year, for example, French researchers shifted seismic waves around holes placed specifically on the ground, reflecting the waves back.
Ong pointed out that it is possible to take advantage of the knowledge learned in reconfiguring the geometry of materials to divert the tsunami from the strategic building.
Elena Semouchkina, a pioneer in stealth devices at the University of Michigan Tech, pointed out that antennas should be shielded so that they do not interfere with each other and protect people from harmful radiation or sound pressure, even prevent buildings from being damaged by earthquakes.
Ultra-materials can also absorb and emit light at extremely high efficiency-for example, in
Resolution Ultrasound-or redirect the light at a very small distance.
Anthony Vicari of Lux Research said, \"this can be used to improve optical fiber communication networks and even for optical communication inside microchips to speed up computing.
\"In fact, there is clearly a growing interest in commercializing the unique properties of supermaterials.
The first thing to do this is the new disbanded company Rayspan, California.
The company\'s antenna enters the WiFi router from ultra-flat smartphones from network manufacturers Netgear Inc. and LG Electronics Inc.
The former Rayspan executives said the antennas were smaller, flatter and superior to other options in performance, but it proved difficult to integrate them into the rest of the phone.
A lg spokesman said the project was no longer active and that LG had no plans to apply supermaterials to other products.
\"One thing from my experience as an entrepreneur is that technology is very excited about what it does in the lab,\" Maha Achour said.
But when you commercialize things, the reality is completely different.
The company\'s patents have since been sold to an undisclosed buyer.
Lessons have been learned.
Now, the focus has shifted to the use of supermaterials in products where it is easier to gain a business foothold in the market.
Smith, who made the first supermaterial in 1999, led the charge, working with Intellectual Venture Capital, a patent portfolio company, to spin off two companies: Kymeta Corp, which makes tablets
Panel antenna and Evolv Technology for satellite communications, which is intended to manufacture a lighter, faster, portable airport scanner with no moving parts.
Kymeta, working with satellite operators Inmarsat and O3b Networks, is looking to ship in early 2015.
The two areas were selected from a shortlist of 20 potential markets, Smith said.
\"They are the same super material as the one behind the cloak, but we are looking for closer material --
Application for semester.
\"Wireless charging in the future, consumers may use ultra-material in the wireless charging of devices, which has attracted high attention in the industry.
Mark Gostock of the University of Oxford research commercial company ISIS Innovation Co. , Ltd. said he was in talks with several manufacturers to obtain permission for ISIS technology.
Samsung Electronics has filed several patents related to ultra-materials and wireless charging, but declined to comment on the article.
Other companies that cite over-materials in patent applications include Harris, NEC, HP
Packard and Panasonic
Will McCarthy, Denver\'s chief technology officer, said
Headquartered at smart window maker RavenBrick LLC, he wants patent holders to introduce hypermaterial into the polarized window and hypermaterial will not be hyped.
\"The people who buy these products don\'t know how they work, and they don\'t know or care that they are doing things that were previously considered impossible,\" he said . \".
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