| 초록 |
Despite of recently highlighted wearable electronics technology, large portion of the electronic device including memory still remains on rigid platforms. Previously reported deformable memory devices often are hardly stretchable and utilize organic semiconductor of low air/water stability. Here, we have developed a stretchable and multiplexed inorganic nonvolatile memory integrated with gold nanocrystals floating gate assembled by Langmuir-Blodgett method. By using ultrathin single crystalline silicon nanomembrane based multiplexing memory transistors, memory array of good stability in ambient condition and individual cell addressability has been realized in skin-conformable structure. Electrically isolated nanocrystals allow charge confinement facilitating data storage in nanoscale dimension with long retention time. High packing density of self-assembled nanocrystals increases the memory window, thus enabling stable multi-level-cell operation. By interfacing the memory array with the wearable amplifier and electrode array, we have demonstrated stable storage of heart rate data recorded during exercise stress testing for long period of time. |
