Hierarchically Structured M13 Phage Aerogel for Enhanced Sound-Absorption

被引：8

作者：

Wang, Guan ^{[1
]}

Yuan, Pingqiu ^{[1
]}

Ma, Binghe ^{[1
]}

Yuan, Weizheng ^{[1
]}

Luo, Jian ^{[1
]}

机构：

[1] Northwestern Polytech Univ, Key Lab Micro Nano Syst Aerosp, Minist Educ, Xian 710072, Peoples R China

来源：

MACROMOLECULAR MATERIALS AND ENGINEERING | 2020年 / 305卷 / 11期

基金：

中国国家自然科学基金;

关键词：

aerogels; local piezoelectric effects; M13; phages; open-cell porous materials; passive sound-absorption; PROPAGATION; PERFORMANCE; CELLULOSE; FOAMS;

D O I：

10.1002/mame.202000452

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Aerogels are a novel type of open-cell porous material. They are particularly suitable for passive sound-absorption due to their high porosity and high-surface areas of the internal structures, but with the drawbacks of limited absorption rate of low-frequency sound and poor mechanical performance. Here, it is first demonstrated that the M13 phage aerogel(M13AG) with hierarchically porous and ribbing structures is beneficial to sound-absorption and the local piezoelectric effect attributed to M13 phages can further improve the sound-absorption ability in the low-frequency. The sound-absorption coefficient of the M13AG with thickness of 20 mm attains peak value of 0.992 at 1600 Hz. In addition, the M13AG is assembled on a metallic foam framework to enhance its mechanical performance. The resulting M13AG/nickel foam exhibits enhanced compressive yield strength up to 0.14 MPa. This study opens up a new opportunity for passive sound-absorption.

引用

页数：5

共 31 条

[1]

Arenas JP, 2010, SOUND VIB, V44, P12

[2] Active vibration control of smart shells using distributed piezoelectric sensors and actuators [J].