公开(公告)号：US20140360709A1

公开(公告)日：2014-12-11

申请号：US14299075

申请日：2014-06-09

Applicant: Purdue Research Foundation

Inventor： Thomas Siegmund ,  Yuezhong Feng ,  Somesh Khandelwal

IPC: F28F3/00

CPC classification number: H01L23/3735 ,  F28F2013/001 ,  F28F2013/008 ,  H01L23/367 ,  H01L23/3736 ,  H01L23/3737 ,  H01L2924/0002 ,  H01L2924/00

Abstract: Metamaterial systems capable of exhibiting changes in thermal conductivities in response to an external control or input, as well as methods relating thereto. The metamaterial systems include first and second plates, and a metamaterial core between and thermally coupled to the first and second plates. The metamaterial core comprises a plurality of elements coupled to and contacting each other, with each of the elements being a pseudo-tetrahedron having surfaces that define surface-to-surface contacts with at least one other of the elements. A force is applied to the metamaterial core that increases contact pressures between the elements at the surface-to-surface contacts thereof and thereby increases thermal contact conductivities at the surface-to-surface contacts and increases a thermal conductivity of the metamaterial core.

Abstract translation: 能够响应于外部控制或输入而呈现热导率变化的超材料系统以及与其相关的方法。 超材料系统包括第一和第二板以及在第一和第二板之间热连接的超材料芯。 超材料芯包括耦合到彼此并且彼此接触的多个元件，其中每个元件是伪四面体，其具有与至少另一个元件的表面到表面的接触。 将力施加到超材料芯上，其增加了元件之间的表面与表面接触处的接触压力，从而增加了表面到表面接触处的热接触电导率，并增加了超材料芯的导热性。

公开(公告)号：US20140339014A1

公开(公告)日：2014-11-20

申请号：US14281408

申请日：2014-05-19

Applicant: Purdue Research Foundation

Inventor： Satya Surya Srinivas Varanasi ,  Somesh Khandelwal ,  Thomas Siegmund ,  John Stuart Bolton ,  Raymond J. Cipra

IPC: E04B1/84

CPC classification number: E04B1/86 ,  E04B2001/748 ,  G10K11/168

Abstract: A cellular material barrier system for reducing sound transmission. The cellular material system includes a planar cellular metamaterial arrangement which includes at least one unit cell, the unit cell includes a sound normalizing arrangement, and a planar metamaterial arrangement coupled to the sound normalizing arrangement on a first side, the planar metamaterial arrangement includes a plate, and a frame affixed to the plate, the sound normalizing arrangement configured to normalize incident sound received at non-normal angle to thereby convey sound at normal angles to the planar metamaterial arrangement, the unit cell further comprising a back layer that is coupled to the sound normalizing arrangement on a second side, opposite the first side, the back layer is made from a porous material, including at least one of a fibrous layer, polymeric foams, ceramic foams, and metallic foams.

Abstract translation: 用于减少声音传播的蜂窝材料屏障系统。 蜂窝材料系统包括平面细胞超材料装置，其包括至少一个单元，单元包括声归一化装置和耦合到第一侧上的声归一化装置的平面超材料布置，所述平面超材料装置包括板 以及固定到所述板的框架，所述声音归一化装置被配置成对以非正常角度接收的入射声进行归一化，从而以与所述平面超材料装置平行的角度传达声音，所述单元还包括耦合到 第二侧的第一侧的声音归一化装置，后层由多孔材料制成，包括纤维层，聚合物泡沫，陶瓷泡沫和金属泡沫中的至少一种。

公开(公告)号：US10468326B2

公开(公告)日：2019-11-05

申请号：US14299075

申请日：2014-06-09

Applicant: Purdue Research Foundation

Inventor： Thomas Siegmund ,  Yuezhong Feng ,  Somesh Khandelwal

IPC: H01L23/373 ,  F28F13/00 ,  H01L23/367

Abstract: Metamaterial systems capable of exhibiting changes in thermal conductivities in response to an external control or input, as well as methods relating thereto. The metamaterial systems include first and second plates, and a metamaterial core between and thermally coupled to the first and second plates. The metamaterial core comprises a plurality of elements coupled to and contacting each other, with each of the elements being a pseudo-tetrahedron having surfaces that define surface-to-surface contacts with at least one other of the elements. A force is applied to the metamaterial core that increases contact pressures between the elements at the surface-to-surface contacts thereof and thereby increases thermal contact conductivities at the surface-to-surface contacts and increases a thermal conductivity of the metamaterial core.

公开(公告)号：US09163398B2

公开(公告)日：2015-10-20

申请号：US14281408

申请日：2014-05-19

Applicant: Purdue Research Foundation

Inventor： Satya Surya Srinivas Varanasi ,  Somesh Khandelwal ,  Thomas Siegmund ,  John Stuart Bolton ,  Raymond J. Cipra

IPC: G10K11/172 ,  E04B1/86 ,  G10K11/168 ,  E04B1/74

CPC classification number: E04B1/86 ,  E04B2001/748 ,  G10K11/168

Abstract: A cellular material barrier system for reducing sound transmission. The cellular material system includes a planar cellular metamaterial arrangement which includes at least one unit cell, the unit cell includes a sound normalizing arrangement, and a planar metamaterial arrangement coupled to the sound normalizing arrangement on a first side, the planar metamaterial arrangement includes a plate, and a frame affixed to the plate, the sound normalizing arrangement configured to normalize incident sound received at non-normal angle to thereby convey sound at normal angles to the planar metamaterial arrangement, the unit cell further comprising a back layer that is coupled to the sound normalizing arrangement on a second side, opposite the first side, the back layer is made from a porous material, including at least one of a fibrous layer, polymeric foams, ceramic foams, and metallic foams.

Abstract translation: 用于减少声音传播的蜂窝材料屏障系统。 蜂窝材料系统包括平面细胞超材料装置，其包括至少一个单元，单元包括声归一化装置和耦合到第一侧上的声归一化装置的平面超材料布置，所述平面超材料装置包括板 以及固定到所述板的框架，所述声音归一化装置被配置成对以非正常角度接收的入射声进行归一化，从而以与所述平面超材料装置平行的角度传送声音，所述单元还包括耦合到所述平面超材料布置的背层 第二侧的第一侧的声音归一化装置，后层由多孔材料制成，包括纤维层，聚合物泡沫，陶瓷泡沫和金属泡沫中的至少一种。