Article
Physics, Applied
Ye Liao, Gongying Chen, Linshan Luo, Jiulong Yu, Wei Huang, Guangyang Lin, Jianyuan Wang, Jianfang Xu, Cheng Li, Songyan Chen
Summary: In this paper, the coexistence of usual bipolar and unique complementary bipolar resistive switching behaviors in an Ag/Li (x) Ti5O12/Pt memory device is reported. The SET and RESET polarities of the complementary bipolar resistive switching mode were found to be opposite to those of the usual bipolar resistive switching mode. The two bipolar switching modes can be freely converted without altering the compliance current. The normal bipolar resistive switching mode is explained by an Ag filament and electrochemical metallization mechanism based on the conducting filament model, while the complementary bipolar resistive switching behavior is attributed to Li diffusion and phase transition between Li (x) Ti5O12 and conducting lithium-rich Li (x) Ti5O12.
APPLIED PHYSICS EXPRESS
(2023)
Review
Chemistry, Multidisciplinary
Mario Lanza, Fei Hui, Chao Wen, Andrea C. Ferrari
Summary: Resistive switching (RS) devices are metal/insulator/metal cells that can change their electrical resistance when electrical stimuli are applied between the electrodes, and they can be used to store and compute data. Planar crossbar arrays of RS devices can offer a high integration density (>10(8) devices mm(-)(2)) and this can be further enhanced by stacking them three-dimensionally. The advantage of using layered materials (LMs) in RS devices compared to traditional phase-change materials and metal oxides is that their electrical properties can be adjusted with a higher precision.
ADVANCED MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Anan Guo, Hui Bai, Qi Liang, Liping Feng, Xianli Su, Gustaaf Van Tendeloo, Jinsong Wu
Summary: This study demonstrates resistive switching and examines structural evolutions in Ag2Te under an external electric field, revealing the mechanism of resistance change.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Mathematics, Interdisciplinary Applications
Yuriy Gerasimov, Evgenii Zykov, Nikita Prudnikov, Max Talanov, Alexander Toschev, Victor Erokhin
Summary: This paper is dedicated to the experimental study of learning properties of systems, based on polyaniline (PANI) memristive devices. The study demonstrates the impact of signals with different forms, amplitudes, and frequencies on memristive device conductance, with pulse width modulation appearing as the most adequate method for implementing neuromorphic circuits.
CHAOS SOLITONS & FRACTALS
(2021)
Article
Chemistry, Multidisciplinary
Ruijing Ge, Xiaohan Wu, Liangbo Liang, Saban M. Hus, Yuqian Gu, Emmanuel Okogbue, Harry Chou, Jianping Shi, Yanfeng Zhang, Sanjay K. Banerjee, Yeonwoong Jung, Jack C. Lee, Deji Akinwande
Summary: This study investigates the phenomenon of NVRS effect in 2D non-conductive materials, including TMDs, TMD heterostructures, and atomically thin insulators. The results show low switching voltage, large ON/OFF ratio, and forming-free characteristics in these materials, providing insights for the understanding and applications of defects in 2D materials.
ADVANCED MATERIALS
(2021)
Article
Multidisciplinary Sciences
Markus Hellenbrand, Babak Bakhit, Hongyi Dou, Ming Xiao, Megan O. Hill, Zhuotong Sun, Adnan Mehonic, Aiping Chen, Quanxi Jia, Haiyan Wang, Judith L. MacManus-Driscoll
Summary: A design concept of phase-separated amorphous nanocomposite thin films is presented that enables interfacial resistive switching in hafnium oxide-based devices. By incorporating an average of 7% Ba into hafnium oxide, films consisting of amorphous HfOx host matrix interspersed with Ba-rich nanocolumns are formed. The resistive switching is restricted to an interfacial Schottky-like energy barrier, which can be tuned by ionic migration under an applied electric field. The resulting devices exhibit stable reproducibility and switching endurance, allowing for multiple intermediate resistance states and synaptic spike-timing-dependent plasticity.
Article
Materials Science, Multidisciplinary
Prasanth K. Enaganti, Avinash Kothuru, Sanket Goel
Summary: A single-step process for preparing highly conductive porous graphene, called laser-induced graphene (LIG), is examined. The surface morphology, crystallinity, functional groups in LIG, and oxygen vacancies in MnO2 nanoparticles are comprehensively studied. The results show that LIG/MnO2 fabricated by this method exhibits excellent memristor behavior and remarkable performance in flexible, wearable, and fluid-based electronics applications.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Nanoscience & Nanotechnology
Yu-Chuan Shih, Ling Lee, Kai-De Liang, Arumugam Manikandan, Wen-Wu Liu, Yu-Ze Chen, Mu-Tung Chang, Zhiming M. Wang, Yu-Lun Chueh
Summary: The study demonstrates a resistive switching memory design using single crystal copper nanowires, with stable switching behavior achieved through an in situ current-induced oxidation process at high current densities. This design allows for a high number of cycles, a large ON/OFF ratio, and a low switching voltage. It opens opportunities for designing ReRAM devices using full-metallic materials.
ADVANCED ELECTRONIC MATERIALS
(2021)
Article
Multidisciplinary Sciences
Nikolay Frick, Mahshid Hosseini, Damien Guilbaud, Ming Gao, Thomas H. LaBean
Summary: This research analyzed the resistive switches of individual Ag2S nanowires and developed a model to reproduce experimental observations. The model considered the percolation of conductive filaments and the stochastic fluctuations of resistivity, successfully reproducing key features of resistive switching. Additionally, the model proposed a non-core shell structure of the Ag2S nanowires.
SCIENTIFIC REPORTS
(2022)
Review
Polymer Science
Bixin Li, Shiyang Zhang, Lan Xu, Qiong Su, Bin Du
Summary: With the era of information explosion and the rise of artificial intelligence, there is an increasing demand for information technologies that can handle large amounts of data and process efficiently. However, traditional silicon-based storage and computing technologies are reaching their limits and cannot fulfill the requirements of ultrasmall size, ultrahigh density, flexibility, biocompatibility, and recyclability. Polymer-based resistive memory materials have emerged as promising candidates for next-generation information storage and neuromorphic computing applications, offering advantages such as easy molecular design, volatile and non-volatile storage, flexibility, and easy fabrication.
Review
Chemistry, Multidisciplinary
Emanuel Carlos, Rita Branquinho, Rodrigo Martins, Asal Kiazadeh, Elvira Fortunato
Summary: Metal oxide resistive switching memories are crucial for the requirements of the Internet of Things, and solution-based devices offer advantages such as high flexibility and low cost. These devices are emergent and promising non-volatile memories for future electronics.
ADVANCED MATERIALS
(2021)
Article
Physics, Applied
Xuepeng Xiang, Jingjing Rao, Zuyun He, Mengzhen Zhou, Qicheng Huang, Yuan Gao, Zhen Fan, Xinwei Wang, Yan Chen
Summary: The uniaxial strain of SrCoO2.5 (SCO) thin film can be controlled by low-energy helium irradiation, leading to improved resistive switching performance. The device irradiated with 1 x 10(14) ions/cm(2) shows the best performance.
JOURNAL OF APPLIED PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Xuya Xiong, Fan Wu, Yi Ouyang, Yanming Liu, Zegao Wang, He Tian, Mingdong Dong
Summary: A controllable oxygen passivation method is used to achieve tunable p-type doping in MoS2 film, leading to a TiN/O-MoS2 memristor with surprising bipolar switching characteristics and nearly symmetric SET and RESET domains. The memristor can mimic synaptic features and has the potential for bio-realistic electronics.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mingkai Tang, Liyufen Dai, Mingqiang Cheng, Yuan Zhang, Yanghe Wang, Xiangli Zhong, Jinbin Wang, Feng An, Ming Ma, Mingqiang Huang, Changjian Li, Jiangyu Li, Gaokuo Zhong
Summary: This article proposes a synthesis strategy based on high-throughput pulsed laser deposition technology to precisely control the thickness of oxide thin films. With this method, STO thin films with different thicknesses were successfully synthesized, and a transition from unipolar to bipolar resistive switching mode was observed as the film thickness increased. The STO thin film with a thickness of 20.3 nm exhibited excellent conductance modulation properties under the application of electrical pulses as well as significant reliability for emulating various synaptic functions, making it a promising material for artificial neuromorphic computing applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Juan Ignacio Diaz Schneider, Paula Cecilia Angelome, Leticia Paula Granja, Cynthia Paula Quinteros, Pablo Eduardo Levy, Eduardo David Martinez
Summary: This paper investigates the resistive switching phenomena in percolative networks of silver nanowires coated with a thin layer of polyvinylpyrrolidone. The system exhibits different conductance levels and resistance state transitions under different environmental conditions, which is significant for the development of AgNWs-based electronics and in-hardware neuromorphic computing.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Timea Nora Torok, Miklos Csontos, Peter Makk, Andras Halbritter
Article
Nanoscience & Nanotechnology
Botond Santa, Zoltan Balogh, Laszlo Posa, David Krisztian, Timea Nora Torok, Daniel Molnar, Csaba Sinko, Roland Hauert, Miklos Csontos, Andras Halbritter
Summary: The study shows that noise levels can be tailored by choosing the right materials and varying resistance states, allowing for orders-of-magnitude tuning of relative noise levels in different material systems. These findings promote the design of multipurpose resistive switching units that can serve as analog-tunable memory elements and tunable noise sources in probabilistic computing machines.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
A. Magyarkuti, Z. Balogh, G. Mezei, A. Halbritter
Summary: The study found that single-molecule nanowires formed at low temperatures exhibit strong structural memory effects, allowing the reestablishment of the junction after rupture; however, those formed at room temperature show weak structural memory effects, leading to rearrangement after junction rupture.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Laszlo Posa, Zoltan Balogh, David Krisztian, Peter Balazs, Botond Santa, Roman Furrer, Miklos Csontos, Andras Halbritter
Summary: The researchers provide insights into the microscopic processes of graphene nanogap formation through detailed analysis of their low-frequency noise properties. By modeling and analyzing the resistance and bias dependence of the noise, they identify different regimes throughout the nanogap formation, leading to an optimized electrical breakdown protocol for high-yield graphene nanogap fabrication.
NPJ 2D MATERIALS AND APPLICATIONS
(2021)
Review
Nanoscience & Nanotechnology
Zoltan Balogh, Greta Mezei, Laszlo Posa, Botond Santa, Andras Magyarkuti, Andras Halbritter
Summary: This paper discusses the 1/f-type noise properties of nanoelectronic devices, focusing on resistive switching memories, graphene nanogaps, and single-molecule nanowires. Analysis of the 1/f-type noise provides rich information about the transport and noise-generating mechanisms in nanoelectronic systems.
Article
Nanoscience & Nanotechnology
Lars Lueder, Agnes Gubicza, Michael Stiefel, Jan Overbeck, Davide Beretta, Amin Sadeghpour, Antonia Neels, Peter N. Nirmalraj, Rene M. Rossi, Claudio Toncelli, Michel Calame
Summary: This study introduces a fast and reliable method for the interfacial synthesis of conductive MOF films using two different organic ligands, HHTP and TCNQ, to achieve good electrical conductivity and chemiresistive response. The hybrid nature of the discontinuous film is investigated multiparametrically by various microscopy techniques and Raman spectroscopy. Including different types of MOFs proves to be a good compromise between structural order and conductivity, making hybrid framework architectures a promising active material for chemiresistive sensors without requiring high crystallinity.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Timea Nora Torok, Janos Gergo Fehervari, Gabor Meszaros, Laszlo Posa, Andras Halbritter
Summary: Resistive switching memory devices have the potential to achieve artificial neural networks and nonconventional computing. Studying single resistive switching elements is crucial for utilizing their characteristics for computation. The variability of set time, the timespan before the transition from a high-resistance OFF state to a low-resistance ON state, is key to utilizing the inherent stochasticity of resistance switching. In this study, the set time statistics in nanometer-sized graphene-SiOx-graphene resistive switching memory devices were investigated. The study demonstrated a universal variance of logarithmic set time values, which is characteristic of a nucleation-driven crystallization process. The correlation between OFF state resistance and set time was observed and the tunability of set time statistics was explored by changing the reset amplitude parameter in sequential pulsed measurements. This phenomenon could be useful for controlling stochasticity in memristor-based probabilistic computing applications.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Fabian Ducry, Dominic Waldhoer, Theresia Knobloch, Miklos Csontos, Nadia Jimenez Olalla, Juerg Leuthold, Tibor Grasser, Mathieu Luisier
Summary: Two-dimensional materials, such as hexagonal boron nitride (h-BN), have potential applications in implementing memristive devices for data storage or neuromorphic computing. The resistance switching mechanism of h-BN in contact with inert electrodes, such as graphene or Pt, is likely attributed to the localized change of h-BN's electronic structure caused by atomic defects.
NPJ 2D MATERIALS AND APPLICATIONS
(2022)
Article
Materials Science, Multidisciplinary
P. Basa, B. Fodor, Zs. Nagy, B. Oyunbolor, A. Hajtman, S. Bordacs, I. Kezsmarki, A. Halbritter, A. Orban
Summary: In this study, transmission Mueller matrix ellipsometry was used to investigate hemozoin, a microcrystalline byproduct of malaria parasites. Measurement data was collected for different magnetic field orientations and hemozoin suspension densities, revealing the magnetic alignment of hemozoin crystals and their optical anisotropies. These findings could contribute to the future optimization of detection schemes or optical instruments for diagnostic use.
Article
Nanoscience & Nanotechnology
Timea Nora Torok, Peter Makk, Zoltan Balogh, Miklos Csontos, Andras Halbritter
Summary: Filamentary resistive switching (RS) devices operate at atomic scale and utilize quantum transport in the switching process. The transmission density function of the device reveals the formation of atomic-sized filaments, where the diameter remains constant during switching. The switching is governed by the redistribution of oxygen vacancies and tantalum cations.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Anna Nyary, Agnes Gubicza, Jan Overbeck, Laszlo Posa, Peter Makk, Michel Calame, Andras Halbritter, Miklos Csontos
NANOSCALE ADVANCES
(2020)
Article
Chemistry, Multidisciplinary
Andras Magyarkuti, Nora Balogh, Zoltan Balogh, Latha Venkataraman, Andras Halbritter
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.
