An object is to increase the aperture ratio of a semiconductor device. The delay cells respectively include a first to a third logic gate. The nanodevice can be used for recognition tunneling measurements including, for example DNA sequencing. The needle is disengageable from the first latching mechanism in the ready position, and the needle is not disengageable from the first latching mechanism in the secured position. A memory circuit and a computing system are also provided. The low refractive index layers of the first and second laminated portions have a low refractive index layer uniform portion or a low refractive index layer decreasing portion.