Table 3 Summary of structure, synaptic functions, and energy consumptions for various artificial sensory synapses based on 2D materials that have been reported in recent studies
From: Two-dimensional materials for artificial sensory devices: advancing neuromorphic sensing technology
2D materials-based artificial visual synapses | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Materials | Structure | Wavelength (nm) | Light intensity (W cm-2) | Operation pulse width | Synaptic functions | Energy consumption per event | Retention (s) | Endurance (cycle) | Ref |
MoS2 | 3-termianl | 200, 450, 1000, 2000 | 8.66 × 10-4 | 50 ms | STP, LTP | - | 104 | - | |
MoSe2/Bi2Se3 | 2-terminal | 790 | 1 × 10-3 | 0.1 ms | LTP, STP | 100 pJ | 106 | 1000 | |
Perylene/GO | 2-terminal | 365 –1550 | 1.4–7.2 × 10-5 | 1 s | STP, LTP, LTD | 10-9 W | - | - | |
InSe | 3-terminal | 405, 520, 650 | 2 × 10-1 | 0.1 s | STP, LTP | - | - | - | |
MoS2/BaTiO3 | 3-terminal | 450, 532, 650 | 5 × 10-3 | 100 ms | LTP, LTD | 1.8 pJ | 300 | 100 | |
α-In2Se3/GaSe | 3-terminal | 450 | 1.87 × 10-2 | 1 s | LTP, LTD | - | - | - | |
CsPbBr3/MoS2 | 3-terminal | 405 | 2.55 × 10-1 | 10 ms | STP, LTP | 42.93 nJ | - | - | |
2D imine polymer | 3-terminal | 400 | 0–8.7 × 10-4 | 500 ms | STP, LTP | 0.29 pJ | 5 | - | |
MoS2/SiO2 | 2-terminal | 310 | 4–12 × 10-5 | - | STP, LTP, STD, LTD | - | - | - | |
2D materials-based artificial tactile synapses | |||||||||
Materials | Structure | Type of control spikes (Strain/Stress/Displacement) | Frequency | Synaptic functions | Energy Consumption per event | Retention (s) | Endurance (cycle) | Ref | |
MoS2/LiSiOx | 3-terminal | Touch, Strain 0–0.25% | - | LTP, LTD | 0.55 nJ | 2000 | 700 | ||
Graphene | 3-terminal | Touch, Strain 0.3% | 0.1–2 Hz | STP | - | - | - | ||
rGO | 3-termnial | Touch, Stress 3.5–13.9 kPa | 0.5–5 Hz | SRDP | - | - | - | ||
Mxene/LNF | 2-termnial | Touch, Stress 0–30 kPa | 5 Hz | - | - | - | 30,000 | ||
Graphene/h-BN/WSe2 | 3-terminal | Touch | - | LTP, LTD | 74.2 fJ | 1200 | - | ||
2D materials-based artificial tactile synapses | |||||||||
Materials | Structure | Type of control spikes | Frequency | Synaptic functions | Energy consumption per event | Retention (s) | Endurance (cycle) | Ref | |
BP-C/CNT | 2-terminal | Ethanol, 4.1–33 ppm Acetone, 6.5–26 ppm | - | LTP, LTD, SRDP | - | - | > 100 | ||
Ti3C2Tx | 2-terminal | RG 10–90% | 1 Hz | LTP, LTD | - | > 5000 | > 5 | ||
