TY - JOUR
T1 - Kirigami actuators
AU - Dias, Marcelo A.
AU - McCarron, Michael P.
AU - Rayneau-Kirkhope, Daniel
AU - Hanakata, Paul Z.
AU - Campbell, David K.
AU - Park, Harold S.
AU - Holmes, Douglas P.
PY - 2017
Y1 - 2017
N2 - Thin elastic sheets bend easily and, if they are patterned with cuts, can deform in sophisticated ways. Here we show that carefully tuning the location and arrangement of cuts within thin sheets enables the design of mechanical actuators that scale down to atomically-thin 2D materials. We first show that by understanding the mechanics of a single non-propagating crack in a sheet, we can generate four fundamental forms of linear actuation: roll, pitch, yaw, and lift. Our analytical model shows that these deformations are only weakly dependent on thickness, which we confirm with experiments on centimeter-scale objects and molecular dynamics simulations of graphene and MoS2 nanoscale sheets. We show how the interactions between non-propagating cracks can enable either lift or rotation, and we use a combination of experiments, theory, continuum computational analysis, and molecular dynamics simulations to provide mechanistic insights into the geometric and topological design of kirigami actuators.
AB - Thin elastic sheets bend easily and, if they are patterned with cuts, can deform in sophisticated ways. Here we show that carefully tuning the location and arrangement of cuts within thin sheets enables the design of mechanical actuators that scale down to atomically-thin 2D materials. We first show that by understanding the mechanics of a single non-propagating crack in a sheet, we can generate four fundamental forms of linear actuation: roll, pitch, yaw, and lift. Our analytical model shows that these deformations are only weakly dependent on thickness, which we confirm with experiments on centimeter-scale objects and molecular dynamics simulations of graphene and MoS2 nanoscale sheets. We show how the interactions between non-propagating cracks can enable either lift or rotation, and we use a combination of experiments, theory, continuum computational analysis, and molecular dynamics simulations to provide mechanistic insights into the geometric and topological design of kirigami actuators.
UR - http://www.scopus.com/inward/record.url?scp=85038370864&partnerID=8YFLogxK
U2 - 10.1039/c7sm01693j
DO - 10.1039/c7sm01693j
M3 - Article
AN - SCOPUS:85038370864
SN - 1744-683X
VL - 13
SP - 9087
EP - 9092
JO - Soft Matter
JF - Soft Matter
IS - 48
ER -