TY - JOUR
T1 - 3D Printing Hierarchical Silver Nanowire Aerogel with Highly Compressive Resilience and Tensile Elongation through Tunable Poisson's Ratio
AU - Yan, Pengli
AU - Brown, Emery
AU - Su, Qing
AU - Li, Jun
AU - Wang, Jian
AU - Xu, Changxue
AU - Zhou, Chi
AU - Lin, Dong
N1 - Publisher Copyright:
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/10/11
Y1 - 2017/10/11
N2 - Metallic aerogels have attracted intense attention due to their superior properties, such as high electrical conductivity, ultralow densities, and large specific surface area. The preparation of metal aerogels with high efficiency and controllability remains challenge. A 3D freeze assembling printing technique integrated with drop-on-demand inkjet printing and freeze casting are proposed for metallic aerogels preparation. This technique enables tailoring both the macrostructure and microstructure of silver nanowire aerogels (SNWAs) by integrating programmable 3D printing and freeze casting, respectively. The density of the printed SNWAs is controllable, which can be down to 1.3 mg cm−3. The ultralight SNWAs reach high electrical conductivity of 1.3 S cm−1 and exhibit excellent compressive resilience under 50% compressive strain. Remarkably, the printing methodology also enables tuning aerogel architectures with designed Poisson's ratio (from negative to positive). Moreover, these aerogel architechtures with tunable Poisson's ratio present highly electromechanical stability under high compressive and tensile strain (both strain up to 20% with fully recovery).
AB - Metallic aerogels have attracted intense attention due to their superior properties, such as high electrical conductivity, ultralow densities, and large specific surface area. The preparation of metal aerogels with high efficiency and controllability remains challenge. A 3D freeze assembling printing technique integrated with drop-on-demand inkjet printing and freeze casting are proposed for metallic aerogels preparation. This technique enables tailoring both the macrostructure and microstructure of silver nanowire aerogels (SNWAs) by integrating programmable 3D printing and freeze casting, respectively. The density of the printed SNWAs is controllable, which can be down to 1.3 mg cm−3. The ultralight SNWAs reach high electrical conductivity of 1.3 S cm−1 and exhibit excellent compressive resilience under 50% compressive strain. Remarkably, the printing methodology also enables tuning aerogel architectures with designed Poisson's ratio (from negative to positive). Moreover, these aerogel architechtures with tunable Poisson's ratio present highly electromechanical stability under high compressive and tensile strain (both strain up to 20% with fully recovery).
KW - drop-on-demand
KW - freeze casting
KW - hierarchy of microstructure
KW - inkjet 3D printing
KW - silver nanowire aerogel
UR - http://www.scopus.com/inward/record.url?scp=85030702823&partnerID=8YFLogxK
U2 - 10.1002/smll.201701756
DO - 10.1002/smll.201701756
M3 - Article
C2 - 28834394
AN - SCOPUS:85030702823
VL - 13
JO - Small
JF - Small
SN - 1613-6810
IS - 38
M1 - 1701756
ER -