<p>A microprobe (4) is provided which comprises a single crystal provided on a part of one main surface of a substrate or a part of a thin film (2) formed on one main surface of the substrate (1). The microprobe may have a single crystal having an apex portion (5) surrounded by facets having a specific plane direction and comprising a specific crystal face. The method for preparing the microprobe and an electronic device employing the microprobe also provided which is useful for recording and reproducing. <IMAGE></p>
