8/17/2023 0 Comments Penn state meta materials![]() The acoustic beam aperture modifier is built upon gradient-index phononic crystals, in this case an array of steel pins embedded in epoxy in a particular pattern. Artificial structures are created in patterns that bend the acoustic wave onto a single point, and then refocus the acoustic wave into a wider or narrower beam, depending on the direction of travel through the proposed acoustic beam aperture modifier. The basic principles of optical metamaterials apply to acoustic metamaterials. Optical metamaterials have been widely studied in the past decade for applications such as cloaking and perfect lenses. The device should also provide more accurate and efficient high-intensity focused ultrasound (HIFU) therapies, a noninvasive heat-based technique targeted at a variety of cancers and neurological disorders. ![]() This invention will benefit almost all current sonic and ultrasonic applications, such as ultrasonic nondestructive evaluations and ultrasonic imaging. In a cover article in The Journal of Applied Physics, a team of Penn State researchers has designed and computationally tested a type of manmade metamaterial capable for the first time of manipulating a variety of acoustic waves with one simple device.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |