Compositional Tuning of Negative Differential Resistance in Bulk Silver Iodide Memristor

2020 ◽  
Author(s):  
SMITA GAJANAN NAIK ◽  
Mohammad Hussain Kasim Rabinal
Keyword(s):  
Power Consumption ◽  
Negative Differential Resistance ◽  
Silver Iodide ◽  
Differential Resistance ◽  
Fast Response ◽  
Low Power Consumption ◽  
Switching Effect ◽  
Memory Switching ◽  
Bulk Silver ◽  
Emerging Memory

Electrical memory switching effect has received a great interest to develop emerging memory technology such as memristors. The high density, fast response, multi-bit storage and low power consumption are their...

Low power consumption and fast response H2S gas sensor based on a chitosan-CuO hybrid nanocomposite thin film

2020 ◽  
Vol 236 ◽  
pp. 116064 ◽  
Author(s):  
Fajr I.M. Ali ◽  
Saleh T. Mahmoud ◽  
Falah Awwad ◽  
Yaser E. Greish ◽  
Ayah F.S. Abu-Hani
Keyword(s):  
Thin Film ◽  
Power Consumption ◽  
Low Power ◽  
Gas Sensor ◽  
Fast Response ◽  
Low Power Consumption ◽  
Hybrid Nanocomposite ◽  
Nanocomposite Thin Film ◽  
H2s Gas Sensor

scholarly journals Dispersed-Monolayer Graphene-Doped Polymer/Silica Hybrid Mach-Zehnder interferometer (MZI) Thermal Optical Switch with Low-Power Consumption and Fast Response

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1898 ◽  
Author(s):  
Yue Cao ◽  
Daming Zhang ◽  
Yue Yang ◽  
Baizhu Lin ◽  
Jiawen Lv ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Power Consumption ◽  
Low Power ◽  
Optical Switch ◽  
Fast Response ◽  
Zehnder Interferometer ◽  
Low Power Consumption ◽  
Monolayer Graphene ◽  
Doped Polymer ◽  
Silica Hybrid

This article demonstrates a dispersed-monolayer graphene-doped polymer/silica hybrid Mach–Zehnder interferometer (MZI) thermal optical switch with low-power consumption and fast response. The polymer/silica hybrid MZI structure reduces the power consumption of the device as a result of the large thermal optical coefficient of the polymer material. To further decrease the response time of the thermal optical switch device, a polymethyl methacrylate, doped with monolayer graphene as a cladding material, has been synthesized. Our study theoretically analyzed the thermal conductivity of composites using the Lewis–Nielsen model. The predicted thermal conductivity of the composites increased by 133.16% at a graphene volume fraction of 0.263 vol %, due to the large thermal conductivity of graphene. Measurements taken of the fabricated thermal optical switch exhibited a power consumption of 7.68 mW, a rise time of 40 μs, and a fall time of 80 μs at a wavelength of 1550 nm.

scholarly journals Negative Differential Resistance in Bidirectional Threshold Switching of Ag/HfOx/Pt Device

2020 ◽  
Author(s):  
zhiguo jiang ◽  
Dongliang Wang ◽  
Yan Li ◽  
Yong Zhang ◽  
Xinman Chen
Keyword(s):  
Negative Differential Resistance ◽  
Electronic Device ◽  
Differential Resistance ◽  
Memory Device ◽  
Resistive Memory ◽  
Relaxation Equation ◽  
Relaxation Time Constant ◽  
Memory Switching ◽  
Threshold Switching ◽  
Dynamic Conductance

Abstract In this work, the dependence of negative differential resistance (NDR) on compliance current (Icc) was investigated based on Ag/HfOx/Pt resistive memory device. Tunable conversion from bidirectional threshold switching (TS) to memory switching (MS) were achieved through enhancing Icc. NDR can be observed in TS as Icc is below 800μA but vanishes in MS. The switching voltages and readout windows of TS evolve with Icc. Furthermore, the dynamic conductance (dI/dV) as a function of time in NDR can be well illustrated by capacitor-like relaxation equation, and the relaxation time constant is significantly dependent on Icc. These phenomena were elucidated from viewpoint of nanofilament evolution controlled by Icc as well as nanocapacitor effects originated from nanofilament gap. The Icc-dependent NDR as well as conversion between TS and MS on Ag/HfOx/Pt resistive memory device indicates its potential application as a multifunctional electronic device.

Ion Gel-Coated Graphene Transistor for Ethanol Gas Sensing

2021 ◽  
Vol 105 ◽  
pp. 3-7
Author(s):  
De Sheng Liu ◽  
Jiang Wu ◽  
Zhi Ming Wang
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Industrial Production ◽  
Gas Sensing ◽  
Drunk Driving ◽  
Fast Response ◽  
Low Power Consumption ◽  
Operating Voltage ◽  
Ethanol Sensor ◽  
Ion Gel

Ethanol sensor has been widely used in our daily life and industrial production, such as drunk driving test, food fermentation monitoring, and industrial gas leakage monitoring. With the advent of the Internet of Things (IoT) era, ethanol sensors will develop towards miniaturization and low-power consumption in the near future. However, traditional ethanol sensors with large volumes and high-power consumption are difficult to meet these requirements. Therefore, it is urgent to study ethanol gas sensors based on new materials and new structures. Here, we demonstrated a flexible ethanol sensor based on an ion gel-coated graphene field-effect transistor (IGFET). The device has a small graphene channel size with a width of 300 μm and a length of 200 μm. The device showed a low operating voltage of less than |±1| V. When the device was put into an ethanol gas condition, the Dirac point voltage of the IGFET showed a negative shift, which means an n-type doping effect to the graphene channel. Furthermore, the sensor showed a normalized current change of-11% against an ethanol gas concentration of 78.51 g/L at a constant drain-source voltage of 0.1 V. In addition, the device exhibited a fast response time of ~10 s and a recovery time of ~18 s. Moreover, the detectable range of the device was found to as wide as 19.76-785.1 g/L. Based on the above results, the flexible IGFET-based ethanol sensor with small size and low-power consumption has great potential to be used in the industrial production of the IoT era.

scholarly journals Buttons on Demand Sliding Mechanism Driven by Smart Materials and Mechanical Design

Actuators ◽  
2021 ◽  
Vol 10 (10) ◽  
pp. 251
Author(s):  
Christianto Renata ◽  
Manivannan Sivaperuman Kalairaj ◽  
Hong Mei Chen ◽  
Gih Keong Lau ◽  
Wei Min Huang
Keyword(s):  
Power Consumption ◽  
Response Time ◽  
Smart Materials ◽  
Mechanical Design ◽  
Fast Response ◽  
Tactile Feedback ◽  
Human Interaction ◽  
Low Power Consumption ◽  
On Demand ◽  
Sliding Mechanism

In this paper, we describe a novel human interaction platform in a car, called buttons on demand, that will serve as buttons inside the interior of a car, which can be called upon and activated when required but remain concealed and inactive when not required. The mechanism to obtain such interaction is driven by a combination of smart materials and mechanical design. The elaboration of smart materials and mechanical design employed to achieve this mechanism is discussed. A demonstration of how the buttons on demand mechanism described in this paper can potentially substitute or minimize the use of bulkier physical buttons in cars and provide the user with haptic and tactile feedback with low power consumption and fast response time is also presented.

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