Does the 130 nm of a Neuropixels probe mean its shank is 130 nm wide? · Lobeworks/17

No: 130 nm names the generation of the CMOS process, the scale of the smallest features its lithography prints, and says nothing about the size of the device.

Does the 130 nm of a Neuropixels probe mean its shank is 130 nm wide?

No: 130 nm names the generation of the CMOS process, the scale of the smallest features its lithography prints, and says nothing about the size of the device. The shank is 70 µm wide and 20 µm thick, about five hundred times the node, and the chip is centimetres long. A mature node is chosen because the analog circuits, the custom steps and the cost matter more here than packing transistors.