Publications by authors named "Zhuiri Peng"

Biological neural circuits demonstrate exceptional adaptability to diverse tasks by dynamically adjusting neural connections to efficiently process information. However, current two-dimension materials-based neuromorphic hardware mainly focuses on specific devices to individually mimic artificial synapse or heterosynapse or soma and encoding the inner neural states to realize corresponding mock object function. Recent advancements suggest that integrating multiple two-dimension material devices to realize brain-like functions including the inter-mutual connecting assembly engineering has become a new research trend.

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Article Synopsis
  • Nonlinear optical responses in 2D materials can enable advanced free-space optical neuromorphic computing, offering a blend of high performance and tunability for diverse functions.
  • Challenges arise from conventional methods that struggle to balance performance and flexibility, often leading to compromises.
  • A new approach using bare molybdenum disulfide arrays enhances modulation performance and energy efficiency while improving tunability, showcasing the potential for optical artificial neural networks and digital processing in neuromorphic applications.
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  • Researchers developed a new artificial visual system using 2D materials that mimics the human visual pathway, aiming to improve artificial intelligence vision functionalities.
  • The innovative hardware features crossbar arrays with tungsten diselenide (WSe) units that replicate the retina and visual cortex, along with peripheral circuits to emulate their connections.
  • This advanced system demonstrates capabilities like processing red-green color blindness, low-power shape recognition, and motion tracking, which could enhance machine vision, driverless technology, brain-computer interfaces, and intelligent robotics.
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  • The review discusses the rising interest in 2D layered materials like graphene and h-BN, emphasizing advancements in strain engineering.
  • It highlights how applying strain can modify physical properties, improving the performance of devices across various applications.
  • The review also summarizes methods of strain engineering and explores its effects on multiple properties of these materials while addressing future applications and research challenges in fields like optoelectronics and spintronics.
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  • Ternary computing systems can achieve higher information density with fewer devices compared to binary systems, but often require extra components to connect binary and ternary processing.
  • Researchers have developed a 2D van der Waals vertical heterojunction transistor (V-HTR) that features three conductance states, allowing direct ternary processing without needing additional devices.
  • This V-HTR has been used to create a ternary neural network that efficiently eliminates fuzzy data and outputs clear results, showcasing its potential as a fundamental hardware unit for future ternary computing applications.
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The exchange bias (EB) effect plays an undisputed role in the development of highly sensitive, robust, and high-density spintronic devices in magnetic data storage. However, the weak EB field, low blocking temperature, as well as the lack of modulation methods, seriously limit the application of EB in van der Waals (vdW) spintronic devices. Here, we utilized pressure engineering to tune the vdW spacing of the two-dimensional (2D) FePSe/FeGeTe heterostructures.

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Increasing both clean water and green energy demands for survival and development are the grand challenges of our age. Here, we successfully fabricate a novel multifunctional 3D graphene-based catalytic membrane (3D-GCM) with active metal nanoparticles (AMNs) loading for simultaneously obtaining the water purification and clean energy generation, via a "green" one-step laser scribing technology. The as-prepared 3D-GCM shows high porosity and uniform distribution with AMNs, which exhibits high permeated fluxes (over 100 L m h) and versatile super-adsorption capacities for the removal of tricky organic pollutants from wastewater under ultra-low pressure-driving (0.

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In neuromorphic hardware, peripheral circuits and memories based on heterogeneous devices are generally physically separated. Thus, exploration of homogeneous devices for these components is key for improving module integration and resistance matching. Inspired by the ferroelectric proximity effect on two-dimensional (2D) materials, we present a tungsten diselenide–on–lithium niobate cascaded architecture as a basic device that functions as a nonlinear transistor, assisting the design of operational amplifiers for analog signal processing (ASP).

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Heterostructures based on diverse two-dimensional (2D) materials are effective for tailoring and further promoting device performance and exhibit considerable potential in photodetection. However, the problem of high-density thermionic carriers can be hardly overcome in most reported heterostructure devices based on type I and type II band alignment, which leads to an unacceptably small I/I and strong temperature dependence that limit the performance of photodetectors. Here, using the MoTe/h-BN/MoTe/h-BN heterostructure, we report the hole-dominated Fowler-Nordheim quantum tunneling transport in both on and off states.

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