Therefore, the FoSLAW can be modeled using a matrix form of the equations of motion as (detailed dynamic model is introduced in Note S2 , Supporting Information) (2) m 1 0 0 0 m 2 0 0 0 m 3 z ̈ 1 z ̈ 2 z ̈ 3 + c 1 + c 3 0 − c 1 0 c 2 + c 4 − c 2 − c 1 − c 2 c 1 + c 2 z ̇ 1 z ̇ 2 z ̇ 3 + 2 k 1 0 − k 1 0 2 k 1 − k 1 − k 1 − k 1 2 k 1 z 1 z 2 z 3 + k 2 z 1 − z 3 2 + k 3 z 1 − z 3 3 + k 2 z 1 2 + k 3 z 1 3 k 2 z 2 − z 3 2 + k 3 z 2 − z 3 3 + k 2 z 2 2 + k 3 z 2 3 k 2 z 3 − z 1 2 + k 3 z 3 − z 1 3 + k 2 z 3 − z 2 2 + k 3 z 3 − z 2 3 = F 1 , i j F 2 , i j 0 The experimental results showed a trend similar to the predictions.
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