Abstract: A silicon carbide crystal includes a seed layer, a bulk layer and a stress buffering structure formed between the seed layer and the bulk layer. The seed layer, the bulk layer and the stress buffering structure are each formed with a dopant that cycles between high and low dopant concentration. The stress buffering structure includes a plurality of stacked buffer layers and a transition layer over the buffer layers. The buffer layer closest to the seed layer has the same variation trend of the dopant concentration as the buffer layer closest to the transition layer, and the dopant concentration of the transition layer is equal to the dopant concentration of the seed layer.

Abstract: A multi-link suspension includes a frame member, a first member pivotably coupled at a first end to the frame member, and a second member pivotably coupled at a first end to a second end of the first member. A dampener physically couples between the first member and the second member. The dampener limits the rotation of the second member about the second end of the first member to a defined arc. The first member includes a horizontal upper surface to which an electric traction motor providing a shaft output attaches. A power transmission system, such as a flexible belt, couples the shaft output provided by the electric traction motor to a drive hub rotatably attached to a second end of the second member.

Abstract: A multi-link suspension includes a frame member, a first member pivotably coupled at a first end to the frame member, and a second member pivotably coupled at a first end to a second end of the first member. A dampener physically couples between the first member and the second member. The dampener limits the rotation of the second member about the second end of the first member to a defined arc. The first member includes a horizontal upper surface to which an electric traction motor providing a shaft output attaches. A power transmission system, such as a flexible belt, couples the shaft output provided by the electric traction motor to a drive hub rotatably attached to a second end of the second member.