Year
Month
(Peer-Reviewed) Soft and Disordered Hyperuniform Elastic Metamaterials for Highly Efficient Vibration Concentration
Hanchuan Tang ¹, Zhuoqun Hao ¹, Ying Liu ¹, Ye Tian ¹, Hao Niu 牛浩 ¹, Jianfeng Zang 臧剑锋 ¹ ²
¹ School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology, Wuhan 430074, China 华中科技大学 光学与电子信息学院 武汉光电国家实验室
² The State Key Laboratory of Digital Manufacturing Equipment and Technology, Huazhong University of Science and Technology, Wuhan 430074, China 华中科技大学 数字制造装备与技术国家重点实验室
National Science Review, 2021-07-29
Abstract

Vibrations, which widely exist throughout the world, could be a nearly endless and locally obtained green energy source. It has been a long-standing challenge to efficiently utilize the dispersed vibration energy especially within the high frequency range, since the amplitudes of high frequency vibrations in local parts of objects are relatively weak.

Here, for the first time, we proposed a soft and disordered hyperuniform elastic metamaterial (DHEM), achieving a remarkable concentration of vibrations in broad frequency bands by a maximum enhancement factor of ∼4000 at 1930 Hz. The DHEM with rational sizes from ∼1 cm to ∼1000 cm covers a broad range of frequencies from ∼10 Hz to ∼10 kHz, which are emitted by many vibration sources including domestic appliances, factories and transportation systems, for example.

Moreover, the performance of soft DHEM under deformation is validated, enabling conformal attachments on uneven objects. Our findings lay the groundwork for reducing traditional energy consumption by recovering some of the energy dissipated by devices in the working world.
Soft and Disordered Hyperuniform Elastic Metamaterials for Highly Efficient Vibration Concentration_1
Soft and Disordered Hyperuniform Elastic Metamaterials for Highly Efficient Vibration Concentration_2
Soft and Disordered Hyperuniform Elastic Metamaterials for Highly Efficient Vibration Concentration_3
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