Cezhou Zhao
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View article: SleepGMUformer: A gated multimodal temporal neural network for sleep staging
SleepGMUformer: A gated multimodal temporal neural network for sleep staging Open
Sleep staging is a key method for assessing sleep quality and diagnosing sleep disorders. However, current deep learning methods face challenges: 1) postfusion techniques ignore the varying contributions of different modalities; 2) unproce…
View article: The Synergistic Effect of Cross-Linked and Electrostatic Self-Assembly Si/MXene Composites Anode for Highly Efficient Lithium-Ion Battery
The Synergistic Effect of Cross-Linked and Electrostatic Self-Assembly Si/MXene Composites Anode for Highly Efficient Lithium-Ion Battery Open
Silicon is a promising anode material for high-performance lithium-ion batteries (LIBs), but its rapid capacity degradation has significantly hindered its large-scale application. In this study, we propose an in situ self-assembly polymeri…
View article: Hierarchical Porous Activated Carbon Derived from Pleurotus Eryngii and the Influence of Pore Structural Parameters on Capacitance Performance
Hierarchical Porous Activated Carbon Derived from Pleurotus Eryngii and the Influence of Pore Structural Parameters on Capacitance Performance Open
Hierarchical porous activated carbon derived from pleurotus eryngii was prepared by a one-step activation method. It was found that the specific surface area of the obtained sample increased with the increase in activation temperature (700…
View article: Influence of KHCO3 Activation on Characteristics of Biomass-Derived Carbons for Supercapacitor
Influence of KHCO3 Activation on Characteristics of Biomass-Derived Carbons for Supercapacitor Open
Biomass materials with representative morphologies and compositions were employed to study the activation effect of KHCO3. As the activation time increased from 1 to 3 h, the products derived from puffed rice and pleurotus eryngii achieved…
View article: A Multifunctional Molecular Bridging Layer for High Efficiency, Hysteresis‐Free, and Stable Perovskite Solar Cells
A Multifunctional Molecular Bridging Layer for High Efficiency, Hysteresis‐Free, and Stable Perovskite Solar Cells Open
At present, the dominating electron transport material (ETL) and hole transport material (HTL) used in the state‐of‐the‐art perovskite solar cells (PSCs) are tin oxide and 2,2′,7,7′‐tetrakis(N,N‐di‐p‐methoxyphenyl‐amine)‐9,9′‐spirobifluore…
View article: A monolithic GaN driver with a deadtime generator (DTG) for high‐temperature (HT) GaN DC‐DC buck converters
A monolithic GaN driver with a deadtime generator (DTG) for high‐temperature (HT) GaN DC‐DC buck converters Open
This paper presents a monolithic GaN driver with a deadtime generator (DTG) for half‐bridge DC‐DC buck converters. The proposed GaN integrated circuits (ICs) were fabricated in a 3 µm enhancement‐mode GaN MIS‐HEMTs process. The integrated …
View article: A Ti3C2Tx-Based Composite as Separator Coating for Stable Li-S Batteries
A Ti3C2Tx-Based Composite as Separator Coating for Stable Li-S Batteries Open
The nitrogen-doped MXene carbon nanosheet-nickel (N-M@CNi) powder was successfully prepared by a combined process of electrostatic attraction and annealing strategy, and then applied as the separator coating in lithium–sulfur batteries. Th…
View article: Functionalized-MXene-nanosheet-doped tin oxide enhances the electrical properties in perovskite solar cells
Functionalized-MXene-nanosheet-doped tin oxide enhances the electrical properties in perovskite solar cells Open
An appropriate electron transport layer (ETL) with better energy alignment and enhanced charge transfer, thereby helping efficient extraction and transport of photogenerated carriers, is essential to achieve the creation of high-performanc…
View article: Emerging Optical In‐Memory Computing Sensor Synapses Based on Low‐Dimensional Nanomaterials for Neuromorphic Networks
Emerging Optical In‐Memory Computing Sensor Synapses Based on Low‐Dimensional Nanomaterials for Neuromorphic Networks Open
Emerging optical synapses with in‐memory computing sensor (IMCS) performance are considered to be one of the most effective candidates to circumvent the bottleneck of the current Von Neumann structure while developing neuromorphic systems …
View article: Solid‐State Electrolyte Gate Transistor with Ion Doping for Biosignal Classification of Neuromorphic Computing
Solid‐State Electrolyte Gate Transistor with Ion Doping for Biosignal Classification of Neuromorphic Computing Open
As the core component of an intelligent neuromorphic computer system, reliable synaptic devices process vast amounts of data with high computing speed and low energy consumption. In this work, the ion‐doped eco‐friendly solution‐processed …
View article: Asymmetric Effect on the Length Dependence of Oligo(Phenylene ethynylene)-Based Molecular Junctions
Asymmetric Effect on the Length Dependence of Oligo(Phenylene ethynylene)-Based Molecular Junctions Open
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View article: Electrochemical gating for single-molecule electronics with hybrid Au|graphene contacts
Electrochemical gating for single-molecule electronics with hybrid Au|graphene contacts Open
A ‘‘off–on–off’’ conductance switching of graphene-contacted single molecular junctions has been reported for the first time using the STM- I (s) method under the electrochemical control. Experimental results are discussed against both a p…
View article: Nitrogen-Doped Hierarchical Porous Activated Carbon Derived from Paddy for High-Performance Supercapacitors
Nitrogen-Doped Hierarchical Porous Activated Carbon Derived from Paddy for High-Performance Supercapacitors Open
A facile and environmentally friendly fabrication is proposed to prepare nitrogen-doped hierarchical porous activated carbon via normal-pressure popping, one-pot activation and nitrogen-doping process. The method adopts paddy as carbon pre…
View article: Oligothiophene molecular wires at graphene-based molecular junctions
Oligothiophene molecular wires at graphene-based molecular junctions Open
The electrical properties of oligopthiophene-based hybrid gold–graphene junctions were measured with the STM- I ( s ) method to determine the attenuation factor and effect of specific anchoring groups. It shows that graphene is an effectiv…
View article: Advances of RRAM Devices: Resistive Switching Mechanisms, Materials and Bionic Synaptic Application
Advances of RRAM Devices: Resistive Switching Mechanisms, Materials and Bionic Synaptic Application Open
Resistive random access memory (RRAM) devices are receiving increasing extensive attention due to their enhanced properties such as fast operation speed, simple device structure, low power consumption, good scalability potential and so on,…
View article: Memristive Non-Volatile Memory Based on Graphene Materials
Memristive Non-Volatile Memory Based on Graphene Materials Open
Resistive random access memory (RRAM), which is considered as one of the most promising next-generation non-volatile memory (NVM) devices and a representative of memristor technologies, demonstrated great potential in acting as an artifici…
View article: Effect of High-k Passivation Layer on High Voltage Properties of GaN Metal-Insulator-Semiconductor Devices
Effect of High-k Passivation Layer on High Voltage Properties of GaN Metal-Insulator-Semiconductor Devices Open
In this paper, the GaN-based MIS-HEMTs with Si3N4 single-layer passivation, Al2O3/SiNx bilayer passivation, and ZrO2/SiNx bilayer passivation are demonstrated. High-k dielectrics are adopted as the passivation layer on MIS-HEMTs to suppres…
View article: Charge transport in hybrid platinum/molecule/graphene single molecule junctions
Charge transport in hybrid platinum/molecule/graphene single molecule junctions Open
The single molecule conductance of hybrid platinum/alkanedithiol/graphene junctions has been investigated with a focus on understanding the influence of employing two very different contact types, namely the relatively weak van der Waals c…
View article: A Novel GaN Metal-Insulator-Semiconductor High Electron Mobility Transistor Featuring Vertical Gate Structure
A Novel GaN Metal-Insulator-Semiconductor High Electron Mobility Transistor Featuring Vertical Gate Structure Open
A novel structure scheme by transposing the gate channel orientation from a long horizontal one to a short vertical one is proposed and verified by technology computer-aided design (TCAD) simulations to achieve GaN-based normally-off high …
View article: Effect of Annealing Temperature for Ni/AlOx/Pt RRAM Devices Fabricated with Solution-Based Dielectric
Effect of Annealing Temperature for Ni/AlOx/Pt RRAM Devices Fabricated with Solution-Based Dielectric Open
Resistive random access memory (RRAM) devices with Ni/AlOx/Pt-structure were manufactured by deposition of a solution-based aluminum oxide (AlOx) dielectric layer which was subsequently annealed at temperatures from 200 °C to 300 °C, in in…
View article: Effect of Asymmetric Anchoring Groups on Electronic Transport in Hybrid Metal/Molecule/Graphene Single Molecule Junctions
Effect of Asymmetric Anchoring Groups on Electronic Transport in Hybrid Metal/Molecule/Graphene Single Molecule Junctions Open
A combined experimental and theoretical study on molecular junctions with asymmetry in both the electrode type and in the anchoring group type is presented. A scanning tunnelling microscope is used to create the “asymmetric” Au‐S‐(CH 2 )n‐…
View article: Monolithic GaN Half-Bridge Stages With Integrated Gate Drivers for High Temperature DC-DC Buck Converters
Monolithic GaN Half-Bridge Stages With Integrated Gate Drivers for High Temperature DC-DC Buck Converters Open
This paper presents a GaN based synchronous buck DC-DC converter, which monolithically integrates gate drivers and a half-bridge power stage in a 3-μm enhancement-mode (E-mode) GaN-on-Si process. The fabricated synchronous converter with i…
View article: Graphene-Contacted Single Molecular Junctions with Conjugated Molecular Wires
Graphene-Contacted Single Molecular Junctions with Conjugated Molecular Wires Open
In this study, we have determined the electrical properties of amine- and thiol-terminated poly(p-phenylene) molecular wires bound either between two gold electrode contacts (Au/Au) or between a gold contact and a graphene electrode (Au/gr…
View article: Porous Activated Carbons Derived from <i>Pleurotus eryngii</i> for Supercapacitor Applications
Porous Activated Carbons Derived from <i>Pleurotus eryngii</i> for Supercapacitor Applications Open
Varieties of natural biomass have been utilized to prepare porous carbon materials for supercapacitor applications. In this work, porous activated carbons derived from Pleurotus eryngii were prepared by carbonization and KOH activation. Th…
View article: Graphene as a Promising Electrode for Low-Current Attenuation in Nonsymmetric Molecular Junctions
Graphene as a Promising Electrode for Low-Current Attenuation in Nonsymmetric Molecular Junctions Open
We have measured the single-molecule conductance of 1,n-alkanedithiol molecular bridges (n = 4, 6, 8, 10, 12) on a graphene substrate using scanning tunneling microscopy (STM)-formed electrical junctions. The conductance values of this hom…