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As an ideal candidate for biology information detection, flexible resistance-array-type sensors have attracted extensive attention. But owing to the Neighbor Disturbance in resistance array, the accuracy of the sensors has been limited greatly. In the presented work, a novel resistance measuring circuit has been developed with equipotential shielding method, which shows a better accuracy in detecting...
In this paper, we construct a nonlinear extended state observer (ESO) through nonlinear functions switching between sub-linear and linear regions. The convergence is proved with explicit error estimation. The numerical simulations are carried out for comparing the performance of different ESOs. The simulation visualization shows that the proposed ESO in this paper takes advantages of low peaking value...
The Bluetooth wireless communication technology which is widely used for short-range communications. It operates on 2.4GHz ISM band. In addition, Bluetooth and IEEE 802.11(Wi-Fi) devices are possible and likely to occur on the specific channel in the same location. Bluetooth devices adopt frequency hopping scheme to prevent the likelihood of mutual interferences. Although the frequency hopping can...
To explain the observed device characteristics of binary metal oxide based resistive random access memory (RRAM) modules, filamentary models have been proposed. Ab initio methods were applied to study conductive filamentary structures characteristic to the “ON” state and the atomistic description of the rupturing/dissolution process into the “OFF” state. We review the implications on the electronic...
Binary transition metal oxides TiOx, NiOx, HfOx, AlOx, TaOx have been recently proposed as possible materials for resistance change based non-volatile memory devices. Currently, a major bottleneck in determining the scalability, retention and endurance of these devices, is the lack of detailed understanding of the resistive switching mechanism. To explain the observed device characteristics the so-called...
3D RRAM array suffers more serious reliability issues than 2D array due to the additional dimension involved. This paper systematically assesses the cell-location-dependent write-access (selected cells) and disturbance issues (unselected cells) for a 3D vertical RRAM array. Using a combination of experiments and simulations, a methodology is developed to enable array-level evaluation by conducting...
Recently RGB-D sensors have become very popular in the area of Simultaneous Localisation and Mapping (SLAM). The major advantage of these sensors is that they provide a rich source of 3D information at relatively low cost. Unfortunately, these sensors in their current forms only have a range accuracy of up to 4 metres. Many techniques which perform SLAM using RGB-D cameras rely heavily on the depth...
Switching processes of carbon-based resistive memory cells are simulated on a fully atomistic level by the molecular dynamics (MD) method and the Extended-Hu??ckel-Theory-based Non Equilibrium Green's Function (EHT-NEGF) method. Graphitic filament breakage and re-growth are found to be responsible for the switching of resistance of carbon-based memory. Key parameters that affect the switching speed...
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