კალენდარი
| «« | აპრილი 2024 | »» |
ორ
სა
ოთ
ხუ
პა
შა
კვ
| 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| 22 | 23 | 24 | 25 | 26 | 27 | 28 |
| 29 | 30 |
სიახლეების გამოწერა
სათაური:
მეტამატერიალების მოდელირება და სინთეზი ელექტრომაგნეტიზმისა და ოპტიკისთვის
დონორი ორგანიზაცია :
შვეიცარიის ეროვნული ფონდი
ბიუჯეტი:
72000 CHF
გრანტის ნომერი :
JRP #IB7320-11097
კვლევის მიმართულება:
3 საინჟინრო მეცნიერებები, მაღალტექნოლოგიური მასალები
კვლევის ქვემიმართულება:
3-250 ნანომასალები, ნანოსტრუქტურები, ნანოტექნოლოგია
საკვანძო სიტყვები:
მეტამასალები, ბიიზოტროპია, კირალური მასალები
პროექტის აღწერა :
Metamaterials is a new term describing a concept of artificial, man-made materials composed of small cells containing at least two different natural materials. Metamaterials can exhibit much more pronounced electromagnetic properties than natural materials or even completely new properties such as a negative index of refraction or an electromagnetic band gap. In general, one can distinguish different kind of metamaterials, depending on the size and orientation of the cells that establish the metamaterial. When these cells are small compared with the wavelength and randomly oriented in space, the macroscopic properties of the metamaterial are as simple as homogeneous, isotropic natural materials. Nevertheless, the prediction of the macroscopic properties is numerically very demanding and requires efficient and accurate 3D field solvers that are tailored to the specialties of metamaterials, namely assemblies of many identical cells with a given structure. Such codes do currently not exist. When the cells that establish the metamaterial are not small compared with the wavelength or oriented in a certain direction, the macroscopic properties become much more pronounced and complicated (anisotropic and strongly frequency-dependent). Also for this case, no efficient and accurate 3D field solvers are currently available. Furthermore, the appropriate macroscopic description of such metamaterials is much more demanding as one can see from Photonic Crystals (PhCs) that belong to the class of anisotropic metamaterials with cell size of order a wavelength.
Nanotechnology currently provides the technology to fabricate metamaterials for a very broad frequency range up to optical frequencies. This makes the concept of metamaterials very attractive for future technologies. Beside the extreme case of negative index materials one can think of more realistic materials with strong chirality, perfectly absorbing metamaterials, and low index metamaterials that are excellent for beam-forming applications.
The design procedure of a metamaterial with desired properties is an extremely demanding synthesis process. The only promising way towards an efficient design consists in a combination of accurate field solvers that can analyze any possible metamaterial and derive the corresponding macroscopic properties with an efficient numerical optimizer that designs the cells that establish the metamaterial.
Within the SCOPES project 7GEPJ065551.01 on the “Development of New Methods for Applied Problems of Computational Optics”, efficient 2D field solvers were developed for the analysis of 2D PhCs, i.e., for one of the most demanding types of metamaterials. These solvers were already successfully combined with deterministic and stochastic optimizers for designing PhC waveguide bends with broadband zero reflection and for ultra-compact PhC light splitters. Within the current SCOPES JRP we intend to extend these procedures to the more general case of metamaterials. This mainly requires the development of 3D field solvers for metamaterials as mentioned above. Furthermore, it requires the development of more sophisticated numerical optimizers that are well adapted to the specialties of metamterials.
მიმდინარეობის წლები :
01/09/2005 - 31/08/2008
პროექტის ხელმძღვანელი :
ლიდერი არ მოიძებნა
პროექტის მენეჯერი:
პროექტში მონაწილე (ები) :
თამარ გოგუა
01/09/2005 - 31/08/2008
გიორგი ღვედაშვილი
01/09/2005 - 31/08/2008
რაიმე უზუსტობის შემთხვევაში გთხოვთ
შეატყობინოთ ადმინისტრატორს
