Exploring Bio-Degradable Materials for Resistive Memory: Cow Milk Thin Films on Flexible Substrates for Sustainable Electronics

Resistive Random Access Memory (RRAM or ReRAM) is a type of non-volatile memory that changes the resistance of a material. Biomaterial-based RRAM holds promise for various electronic applications due to its low cost, sustainability, and eco-friendliness. In this study, cow milk was selected as the biomaterial for RRAM. A thin film of cow milk was applied to aluminum foil, a flexible substrate, using the spin-coating technique. The device underwent various characterizations, including electrical, optical, structural, and morphological analyses. The fabricated devices exhibited bipolar resistive switching behavior, with a High Resistance State / Low Resistance State (HRS/LRS) ratio of approximately 10 at a switching voltage of ±2V and demonstrated good retention over 100 voltage sweep cycles. The conduction mechanism was identified as space charge-limited conduction (SCLC). These findings indicate that cow milk is a viable material for RRAM devices.