| 초록 |
Non-volatile memories based on scanning probes offer very high data densities, but existing approaches require the probe to be heated, which increases the energy expenditure and fabrication complexity. Here we demonstrate the writing (data-storage density of 1 Tb/in2), reading and erasure of nanoscopic indentations without heating either the scanning probe tip or the substrate. Because of baroplastic properties of polystyrene-block-poly(n-pentyl methacrylate) copolymer (PS-b-PnPMA) which enable the nanophase transition at relatively lower pressure and temperature, nanopatterns were easily fabricated by the indentation at room temperature. The use of a pressure-based phase-change memory at room temperature may expedite the development of next-generation ultrahigh density data-storage media. Acknowledgement: This work was supported by Creative Research Initiative Program supported by KOSEF |
