Nanodiodes on a Digestible Substrate

publication date
February 2, 2023
page number


Wyatt-Moon, G., Saravanavel, G., Sambandan, S. and Flewitt, A.J., 2022. Nanodiodes on a Digestible Substrate. IEEE Electron Device Letters, 44(2), pp.337-340.

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Biodegradable and edible electronics will need electronic components for signal modulation and wireless communication; hence, non-linear and high frequency components will be required. Here, a method to fabricate nanodiodes on isomalt (a sugar substitute) substrates is reported. Coplanar electrodes of Al and Au with nanogap separation were fabricated on top of isomalt through design of an adhesion lithography process specifically to accommodate the low melting point and high solubility of the substrate. Lateral diodes with rectification ratios of 103 were created by depositing indium gallium zinc oxide (IGZO) using a target with an atomic ratio of In2O3:Ga2O3:ZnO (1:1:1) on top of the electrodes without an annealing step.


Substrates, Electrodes, Gold, Metals, Schottky diodes, Nanoscale devices, Surface treatment, Nano electronics, Nonlinear devices, Biodegradable devices


Gwenhivir Wyatt-Moon 1,  Ganapathy Saravanavel 2,  Sanjiv Sambandan 1,2 and  Andrew J. Flewitt 1

Organisation / Department Address:

  1. Department of Engineering, Electrical Engineering Division, University of Cambridge, Cambridge, U.K.
  2. Department of Instrumentation and Applied Physics, Indian Institute of Science, Bengaluru, India