Preparing materials with a desired refraction coefficient and applications
نویسنده
چکیده
A recipe is given for creating material with a desired refraction coefficient by embedding many small particles in a given material. To implement practically this recipe, some technological problems are to be solved. These problems are formulated. Applications of the materials with a desired refraction coefficient are mentioned. One of the possible applications is preparing materials with desired wave-focusing properties. These are materials which have a desired radiation pattern at a fixed frequency and at a fixed incident direction. The other application is preparing materials with negative refraction. PACS 43.20.+g, 62.40.+d, 78.20.-e. MSC 35J10, 74J25, 81U40
منابع مشابه
Preparing materials with a desired refraction coefficient
A recipe is given for creating material with a desired refraction coefficient by embedding many small particles in a given material. To implement this recipe practically, some technological problems have to be solved. These problems are formulated. PACS 43.20.+g, 62.40.+d, 78.20.-e. MSC 35J10, 74J25, 81U40
متن کاملHow To Prepare Materials With a Desired Refraction Coefficient
In this talk a method is described for preparing materials with a desired refraction coefficient. The method consists of embedding into a material with known refraction coefficient many small particles of size a. The number of particles per unit volume around any point is prescribed, the distance between neighboring particles is O(a 2−κ 3 ) as a → 0, 0 < κ < 1 is a fixed parameter. The total nu...
متن کاملA method for creating materials with a desired refraction coefficient
It is proposed to create materials with a desired refraction coefficient in a bounded domain D ⊂ R by embedding many small balls with constant refraction coefficients into a given material. The number of small balls per unit volume around every point x ∈ D, i.e., their density distribution, is calculated, as well as the constant refraction coefficients in these balls. Embedding into D small bal...
متن کاملMaterials with a desired refraction coefficient can be made by embedding small particles
A method is proposed to create materials with a desired refraction coefficient, possibly negative one. The method consists of embedding into a given material small particles. Given n0(x), the refraction coefficient of the original material in a bounded domain D ⊂ R3, and a desired refraction coefficient n(x), one calculates the number N(x) of small particles, to be embedded in D around a point ...
متن کاملCreating materials with a desired refraction coefficient
A method is given for creating material with a desired refraction coefficient. The method consists of embedding into a material with known refraction coefficient many small particles of size a. The number of particles per unit volume around any point is prescribed, the distance between neighboring particles is O(a 2−κ 3 ) as a → 0, 0 < κ < 1 is a fixed parameter. The total number of the embedde...
متن کامل