Vanadium Dioxide Circuits Emulate Neurological Disorders

Lin, Jianqiang; Guha, Supratik; Ramanathan, Shriram

doi:10.3389/fnins.2018.00856

Cited by 25 publications

(19 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Functional oxides therefore open up new and exciting possibilities for investigating the effect of correlating artificial neurons by examining the interdependence of minute devices at the nanoscale starting from simple systems [905] , [906] , [907] . For example, Lin et al [908] demonstrated that tuning of the insulating phase resistance in VO 2 correlated threshold switch circuits can enable direct mimicry of neuronal origins of disorders in the central neural system ( Fig. 14(e)-(f)).…”

Section: Neural Codesmentioning

confidence: 99%

Functional Oxides for Photoneuromorphic Engineering: Toward a Solar Brain

Pérez‐Tomás

2019

Adv Materials Inter

View full text Add to dashboard Cite

New device concepts and new computing principles are needed to balance our ever-growing appetite for data and information with the realization of the goals of increased energy efficiency, reduction in CO 2 emissions and the circular economy. Neuromorphic or synaptic electronics is an emerging field of research aiming to overcome the current computer's Von-Neumann bottleneck by building artificial neuronal systems to mimic the extremely energy efficient biological synapses. The introduction of photovoltaic and/or photonic aspects into these neuromorphic architectures will produce self-powered adaptive electronics but may also open up new possibilities in artificial neuroscience, artificial neural communications, sensing and machine learning which would enable, in turn, a new era for computational systems owing to the possibility of attaining high bandwidths with much reduced power consumption. This perspective is focused on recent progress in the implementation of functional oxide thinfilms into photovoltaic and neuromorphic applications towards the envisioned goal of selfpowered photovoltaic neuromorphic systems or a solar brain.

show abstract

Section: Neural Codesmentioning

confidence: 99%

Functional Oxides for Photoneuromorphic Engineering: Toward a Solar Brain

Pérez‐Tomás

2019

Adv Materials Inter

View full text Add to dashboard Cite

show abstract

“…The richness of this phenomenon has made it one of the most studied topics in condensed matter physics. The properties of IMT materials and their sensitivity to external stimuli make them promising for applications, such as memory, selectors for ReRAM, optical switches, and emulating brain functionalities [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] . Another advantage of these systems is that the IMT can be triggered by various perturbations, such as optical pumping or changes in temperature, pressure, strain, and chemical doping.…”

mentioning

confidence: 99%

Non-thermal resistive switching in Mott insulator nanowires

et al. 2020

View full text Add to dashboard Cite

Resistive switching can be achieved in a Mott insulator by applying current/voltage, which triggers an insulator-metal transition (IMT). This phenomenon is key for understanding IMT physics and developing novel memory elements and brain-inspired technology. Despite this, the roles of electric field and Joule heating in the switching process remain controversial. Using nanowires of two archetypal Mott insulators-VO 2 and V 2 O 3 we unequivocally show that a purely non-thermal electrical IMT can occur in both materials. The mechanism behind this effect is identified as field-assisted carrier generation leading to a doping driven IMT. This effect can be controlled by similar means in both VO 2 and V 2 O 3 , suggesting that the proposed mechanism is generally applicable to Mott insulators. The energy consumption associated with the non-thermal IMT is extremely low, rivaling that of state-of-the-art electronics and biological neurons. These findings pave the way towards highly energyefficient applications of Mott insulators.

show abstract

“…Recent studies highlighted the interest of VO 2 switch applications in the SNN, ONN, and neural-like circuits [9,12,48,[51][52][53]. The study [9] illustrates the implementation of VO 2 oscillators with various chaotic and burst modes of spike generation based on two switches.…”

Section: Discussionmentioning

confidence: 99%

Switch Elements with S-Shaped Current-Voltage Characteristic in Models of Neural Oscillators

Борисков

Velichko

2019

Electronics

View full text Add to dashboard Cite

In this paper, we present circuit solutions based on a switch element with the S-type I–V characteristic implemented using the classic FitzHugh–Nagumo and FitzHugh–Rinzel models. Using the proposed simplified electrical circuits allows the modeling of the integrate-and-fire neuron and burst oscillation modes with the emulation of the mammalian cold receptor patterns. The circuits were studied using the experimental I–V characteristic of an NbO2 switch with a stable section of negative differential resistance (NDR) and a VO2 switch with an unstable NDR, considering the temperature dependences of the threshold characteristics. The results are relevant for modern neuroelectronics and have practical significance for the introduction of the neurodynamic models in circuit design and the brain–machine interface. The proposed systems of differential equations with the piecewise linear approximation of the S-type I–V characteristic may be of scientific interest for further analytical and numerical research and development of neural networks with artificial intelligence.

show abstract

Vanadium Dioxide Circuits Emulate Neurological Disorders

Cited by 25 publications

References 37 publications

Functional Oxides for Photoneuromorphic Engineering: Toward a Solar Brain

Functional Oxides for Photoneuromorphic Engineering: Toward a Solar Brain

Non-thermal resistive switching in Mott insulator nanowires

Switch Elements with S-Shaped Current-Voltage Characteristic in Models of Neural Oscillators

Contact Info

Product

Resources

About