Study of carbon nanotube embedded honey as a resistive switching material

Abstract

In this paper, natural organic honey embedded with carbon nanotubes (CNTs) was studied as a resistive switching material for biodegradable nonvolatile memory in emerging neuromorphic systems. CNTs were dispersed in a honey-water solution with the concentration of 0.2 wt% CNT and 30 wt% honey. The final honey-CNT-water mixture was spin-coated and dried into a thin film sandwiched in between Cu bottom electrode and Al top electrode to form a honey-CNT based resistive switching memory (RSM). Surface morphology, electrical characteristics and current conduction mechanism were investigated. The results show that although CNTs formed agglomerations in the dried honey-CNT film, both switching speed and the stability in SET and RESET process of honey-CNT RSM were improved. The mechanism of current conduction in CNT is governed by Ohm’s law in low-resistance state and the low-voltage range in high-resistance state, but transits to the space charge limited conduction at high voltages approaching the SET voltage.

Natural Organic Materials Based Memristors and Transistors for Artificial Synaptic Devices in Sustainable Neuromorphic Computing Systems

“…A variety of natural organic materials, mainly protein and carbohydrates such as chitosan [ 3 , 4 , 5 , 6 ], Aloe Vera and polysaccharide [ 7 , 8 , 9 , 10 , 11 , 12 , 13 ], zein from maize [ 14 ], gelatin [ 15 ], honey [ 16 , 17 , 18 , 19 , 20 , 21 , 22 ], lignin [ 23 , 24 ], collagen [ 25 ], trypsin [ 26 ], ι-carrageenan [ 27 , 28 ], dextran [ 29 , 30 ] sodium alginate [ 31 ], wood-derived cellulose nanopapers [ 32 ], biomass-based hydrogel [ 33 ], casein [ 34 ], pectin [ 35 , 36 ], carotene [ 37 ], lipid [ 38 ], natural acidic polyelectrolyte [ 39 ], chicken albumen [ 40 , 41 ], etc., are currently under investigation for making memristor- and transistor-based artificial synaptic devices. These natural organic materials have the advantages of being renewable, sustainable, biodegradable, environmentally friendly, etc., making them an attractive alternative to other inorganic metal oxide and polymer materials [ 42 ] for artificial synaptic devices.…”

A Natural Organic Artificial Synaptic Device Made from a Honey and Carbon Nanotube Admixture for Neuromorphic Computing

“…With these embedded CNT clusters, honey‐CNT memristors have demonstrated improved resistive switching characteristics in our previous study. [ 17 ] Next, synaptic behaviors of honey‐CNT memristors will be investigated and reported.…”

“…This has been proven to be feasible and effective in honey‐memristors. [ 17 ] When carbon nanotubes (CNT) were added in the honey film, both resistive switching speed and stability in SET and RESET processes of honey‐CNT memristor were improved. [ 17 ] However, synaptic behaviors of honey‐CNT memristors have not been reported.…”

“…[ 17 ] When carbon nanotubes (CNT) were added in the honey film, both resistive switching speed and stability in SET and RESET processes of honey‐CNT memristor were improved. [ 17 ] However, synaptic behaviors of honey‐CNT memristors have not been reported. In this work, we investigated the potential of the honey‐CNT memristor for artificial synapses.…”

Synthesis of composite films for ZnO-based memristors with superior stability

“…Although the use of carbon nanotubes as a functional layer for memristors has been shown to be a viable option [39][40][41], whether carbon nanotubes can serve as carriers for ZnO NPs to enhance the dominant mechanism for conductivity depends on their ability to create oxygen vacancy conducting path. Therefore their true viability remains unclear.…”