Article
Nanoscience & Nanotechnology
S. Katsiaounis, N. Chourdakis, E. Michail, M. Fakis, I Polyzos, J. Parthenios, K. Papagelis
Summary: In this work, we introduce an experimental protocol to engineer nanometer scale pores in CVD graphene membranes under ambient conditions, using low power ultra-short laser pulses and overcoming the drawbacks of other perforation techniques. We visualized and quantified the nanopore network using Atomic Force Microscopy (AFM) and Scanning Electron Microscopy (SEM), while Raman spectroscopy is utilized to correlate the nano-perforated area with the nanotopographic imaging. Our results suggest that Raman imaging provides the identification of nanoporous area and, in combination with AFM, we provide solid evidence for the reproducibility of the method, as nanopores of a certain size distribution are formed under these experimental conditions.
Article
Optics
Tingyuan Wang, Kai Zhao, Zhen Ge, Yongsheng Chen, Lie Lin, Nan Zhang, Weiwei Liu
Summary: The performance of a photo-thermo-acoustic ultrasonic source can be significantly enhanced by using graphene-based materials. This study demonstrates that the sound pressure of the ultrasonic source is independent of laser polarization and incident angle, and the ultrasonic wave emitted from the graphene foam has a dipole-like acoustic pressure distribution with a principal emission direction normal to the sample surface.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Yan Lin, Qijun Zhang, Yongjun Deng, Qiang Wu, Xiaofei P. Ye, Siqun Wang, Guigan Fang
Summary: This study demonstrates a new transformation path from lignin to graphene and nanodiamonds using femto-second laser writing in air at ambient temperature and pressure. The results show that laser power is more important than writing speed for the synthesis of carbon nanoparticles, with high power contributing to enhanced electrically conductive performance. Direct laser irradiation technique is a simple, low-cost, and sustainable way to synthesize graphene and NDs, promising for the fabrication of sensors and electric devices.
Article
Materials Science, Multidisciplinary
Bohdan Kulyk, Beatriz F. R. Silva, Alexandre F. Carvalho, Paula Barbosa, Ana Girao, Jonas Deuermeier, Antonio J. S. Fernandes, Filipe M. L. Figueiredo, Elvira Fortunato, Florinda M. Costa
Summary: This article presents a method for fabricating paper-LIG humidity and temperature sensors by irradiating common filter paper with a pulsed UV laser. The sensors show good linearity, reproducibility, and response time, and demonstrate the potential of paper-LIG for low-cost, sustainable, and environmentally friendly sensing.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Chemistry, Multidisciplinary
Naohiro Kadoguchi, Yuuki Uesugi, Makoto Nagasako, Tetsuro Kobayashi, Yuichi Kozawa, Shunichi Sato
Summary: We used femtosecond-laser processing to drill nanopores and <100 nm holes in self-suspended monolayer graphene. The resulting defects were examined using scanning transmission electron microscopy and Raman spectroscopy. This study provides experimental insight into atomic dynamics in graphene under laser irradiation and can help develop engineering methods for graphene and other two-dimensional materials in the future.
Article
Multidisciplinary Sciences
Michele Dipalo, Sahil K. Rastogi, Laura Matino, Raghav Garg, Jacqueline Bliley, Giuseppina Iachetta, Giovanni Melle, Ramesh Shrestha, Sheng Shen, Francesca Santoro, Adam W. Feinberg, Andrea Barbaglia, Tzahi Cohen-Karni, Francesco De Angelis
Summary: Researchers have successfully recorded intracellular cardiac action potentials with high signal-to-noise ratio using a microelectrode platform made of three-dimensional fuzzy graphene (3DFG). By utilizing ultrafast pulsed laser for porating the cell membrane, an intimate contact between the 3DFG electrodes and the intracellular domain was created, enabling the detection of drug effects on human-derived cardiomyocytes' action potential shape. This approach may be applied to monitor cellular electrophysiological states, especially for studying the impact of drugs on cardiac cells.
Article
Chemistry, Multidisciplinary
Siddharth Gupta, Pratik Joshi, Ritesh Sachan, Jagdish Narayan
Summary: This study demonstrates the fabrication of heterostructures with graphene and h-BN using laser irradiation. The results show that phase-pure h-BN and reduced graphene oxide films can be obtained through localized zone-refining. The newly fabricated diodes exhibit improved rectification and current flow characteristics compared to previous diodes, with increased turn-on voltage and low leakage current.
Article
Chemistry, Multidisciplinary
Ziwen Cheng, Haochen Feng, Junhui Sun, Zhibin Lu, Q. -c. He
Summary: The occurrence of structural superlubricity (SSL) requires incommensurate contact between two sliding surfaces, which is unstable to maintain over time. This study proposes a paradigm shift in achieving and maintaining superlubricity by considering two graphene layers in sliding commensurate contact subjected to isotropic in-plane synchronous strain. DFT calculations demonstrate that synchronous strain-driven superlubricity (SSDSL) occurs for specific or all sliding paths when the prescribed compressive strain reaches 15% or 35%. The Prandtl-Tomlinson (P-T) model explains how stick-slip, continuous, and frictionless slides can be modulated by strain. The detailed justification of SSDSL in commensurate contact of graphene layers is attributed to interfacial charge density transfer due to strain. This work presents a new perspective on achieving robust superlubricity.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Chaochen Xu, Shuai Zhang, Hongzhi Du, Tao Xue, Yilan Kang, Yang Zhang, Pei Zhao, Qunyang Li
Summary: Research has shown that the frictional characteristics of graphene can be adjusted by applying strain. In an experiment where graphene is deposited onto a stretchable substrate, it was found that the friction of supported graphene decreases with increasing strain, but the system shows two distinct friction regimes with significantly different strain dependences depending on the adherence state of the graphene/substrate interface.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Chaochen Xu, Shuai Zhang, Hongzhi Du, Tao Xue, Yilan Kang, Yang Zhang, Pei Zhao, Qunyang Li
Summary: Graphene has shown great potential as a surface friction modifier due to its excellent mechanical performance and tribological properties. This study investigates the frictional characteristics of supported graphene under different strains by depositing the graphene on a stretchable substrate and using an in situ tensile loading platform. The experimental results reveal that the friction of supported graphene decreases with increasing strain, similar to suspended graphene. However, the system exhibits two distinct friction regimes depending on the adherence state of the graphene/substrate interface, indicating different strain dependences.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Anjishnu Sarkar, Debadrita Paria, Ishan Barman, David H. Gracias
Summary: This study introduces a method for controlled cracking of graphene ribbons to alter their properties, such as crystallographic orientation and energy band gap. The experiment identifies that the extent of prior ultraviolet crosslinking in SU8 and electron beam dose are the most significant factors contributing to the nano to microscale breakage of micropatterned graphene ribbons. Additionally, the nanoscale breakage in graphene can be tuned by adjusting these variables, potentially allowing for the fabrication of integrated electronic and optical devices with engineered defects or break junctions.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Bohdan Kulyk, Beatriz F. R. Silva, Alexandre F. Carvalho, Sara Silvestre, Antonio J. S. Fernandes, Rodrigo Martins, Elvira Fortunato, Florinda M. Costa
Summary: This study presents strain and bending sensors fabricated by irradiating regular filter paper with a CO2 laser, and systematically investigates the influence of different process parameters on the conversion of cellulose fibers into LIG. The material obtained exhibits porous electrically conductive weblike structures with sheet resistances as low as 32 Omega sq(-1). The functionality of both strain and bending sensors is demonstrated for different sensing configurations, highlighting the versatility and potential of this material for low-cost mechanical sensing applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Coatings & Films
R. V. Tolentino-Hernandez, F. A. Garcia-Pastor, H. Baez-Medina, E. Jimenez-Melero, F. Caballero-Briones
Summary: In this study, graphene oxide coatings were prepared on Nb substrates by electrophoretic deposition, and the performance of the coatings under high power laser irradiation was investigated. The results showed that the coatings had good protection effect under certain heat loads. The study also observed changes in the structure and thickness of the coatings with deposition time.
SURFACE & COATINGS TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Nicola Melchioni, Filippo Fabbri, Alessandro Tredicucci, Federica Bianco
Summary: Artificially-induced defects in graphene lattice can be created using low-energy electron irradiation, enabling the design and fabrication of graphene devices with complex defect engineering. However, the achievable resolution is limited by the influence of back-scattered electrons from the substrate. A model considering substrate effects is proposed.
Article
Materials Science, Multidisciplinary
Naveed Ullah, Jianlei Cui, Hailong Yin, Huanhuan Mei, Kaida Xu, Xiaoqiao He, Xuesong Mei
Summary: This article focuses on the fabrication of a thin film of reduced graphene oxide (rGO) through pulsed UV laser irradiation. The study found that the laser power energy has an influence on the thickness, carbon content, oxygen content, electrical resistance, and specific surface area of the fabricated thin film. Laser irradiation leads to the reduction of oxygen and the restoration of sp2 hybridization, resulting in a material with reduced electrical resistance and improved specific surface area. Under specific conditions, a thin film with good electrical conductivity can be obtained.
Article
Chemistry, Physical
Xian-Wen Cao, Yu-Ting Xu, Bo Yang, Hong-Zhi Lang, Ze-Xiang Shen, Ning Wang, Xiao-Feng Wang, Sheng-Han Wang, Cheng-Lin Sun
Summary: The newly developed nanorod-like MnO2 cathode material with carbon and pyrrolic nitrogen composite showed high specific capacity and excellent cycle stability when used as a cathode for ZIBs. The introduction of a 2-methylimidazole (2-MI) coating layer enhanced the structural stability and zinc ion insertion sites. The phase transition and formation of more porous structure in alpha-MnO2@2-methylimidazole (alpha-MnO2@2-MI) were responsible for the continuous capacity increase in the initial cycles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Xinyuan Zhang, Xin Yang, Ge Sun, Shiyu Yao, Yu Xie, Wei Zhang, Chunbao Liu, Xiaoqi Wang, Rui Yang, Xu Jin, Ze Xiang Shen, Hong Jin Fan, Fei Du
Summary: This study presents a hydration strategy to enhance the stability of potassium-based layered oxides for potassium-ion storage, improving their rate capability and cycle life. The introduction of water molecules induces a phase transition and expands the layer spacing, leading to improved K+ mobility and less volume change during the ion storage process. The hydrated oxides exhibit outstanding rate capability and cycling stability, making them promising cathodes for potassium-ion batteries.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Kandammathe Valiyaveedu Sreekanth, Patinharekandy Prabhathan, Apoorva Chaturvedi, Yulia Lekina, Song Han, Shen Zexiang, Edwin Hang Tong Teo, Jinghua Teng, Ranjan Singh
Summary: Tunable perfect absorption from normal incidence to a wide-angle range is achieved by stacking a high refractive index low-loss dielectric layer on a high reflecting metal. Experimental results demonstrate tunable perfect absorption by depositing a low-loss phase change material on a thin layer of silver. In addition, absorption enhancement is achieved by transferring 2D materials onto the stack, which also functions as a scalable phase modulator.
Article
Engineering, Environmental
Yan Huang, Xinyuan Zhang, Hezhe Lin, Zhixuan Wei, Yi Zeng, Xin Ge, Wei Zhang, Xiaoqi Wang, Xu Jin, Ze Xiang Shen, Fei Du
Summary: In this study, a new P3-type K0.45Mn0.9Al0.1O2 material was designed to enhance the capacity and cycling life of K-ion battery cathodes. The introduction of inactive aluminum ions successfully suppressed lattice distortion, increased interlayer spacing, alleviated exothermic phase transition, and formed a stable cathode electrolyte interphase. This material exhibited high specific capacity and excellent cyclic performance, surpassing existing state-of-the-art cathodes for KIBs.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Benny Febriansyah, Yongxin Li, David Giovanni, Teddy Salim, Thomas J. N. Hooper, Ying Sim, Daphne Ma, Shoba Laxmi, Yulia Lekina, Teck Ming Koh, Ze Xiang Shen, Sumod A. Pullarkat, Tze Chien Sum, Subodh G. Mhaisalkar, Joel W. Ager, Nripan Mathews
Summary: Through engineering the structures of bulky organic cations, low-dimensional perovskite materials with different dimensions could be obtained. It was found that inorganic architectures with lesser structural distortion play a crucial role in improving the performance of mixed-dimensional perovskites.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Multidisciplinary
Shuyue Li, Dongxu Yu, Jingyi Liu, Nan Chen, Zexiang Shen, Gang Chen, Shiyu Yao, Fei Du
Summary: An in situ electrochemical strategy is proposed to regulate the interlayer distance of layered NH4V4O10, revealing a close relationship between optimal performances and interlayer space.
Article
Chemistry, Physical
Chenhui Ma, Konghua Yang, Shibo Zhao, Yu Xie, Chunbao Liu, Nan Chen, Chunzhong Wang, Deping Wang, Dong Zhang, Ze Xiang Shen, Fei Du
Summary: We propose an I2-assisted processing method to fabricate the ZnO interface layer on the Zn anode (IAZO), which effectively suppresses Zn dendrite and side reactions. This method has the advantages of sustainability with a high recovery ratio of 67.25% for the raw material I2, and rapid processing time of only 5 minutes. The IAZO anode shows exceptional cycle life (over 3100 hours) and high depth of discharge (52%), outperforming the original Zn anode (less than 220 hours and 1.7%).
ACS ENERGY LETTERS
(2023)
Review
Chemistry, Multidisciplinary
Ahmed Elbanna, Hao Jiang, Qundong Fu, Juan-Feng Zhu, Yuanda Liu, Meng Zhao, Dongjue Liu, Samuel Lai, Xian Wei Chua, Jisheng Pan, Ze Xiang Shen, Lin Wu, Zheng Liu, Cheng-Wei Qiu, Jinghua Teng
Summary: In recent years, two-dimensional (2D) materials, such as graphene, transition metal dichalcogenides, black phosphorus, MXenes, and semimetals, have received extensive attention due to their intriguing properties, underlying physics, and potential for applications. The diverse traits and possibilities offered by 2D materials and their heterostructures provide great opportunities for photonics and plasmonic devices.
Article
Chemistry, Multidisciplinary
Man Zhang, Xiaoxu Liu, Jiangdong Gu, Hui Wang, Hui Liu, Zexiang Shen
Summary: In this study, a self-fractal structure electrode was designed to overcome the challenges of low efficiency and volume expansion when using metal compounds as anodes in sodium-ion batteries. The electrode showed excellent electrochemical performance and stability.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Xinli Ye, Junxiong Zhang, Xiaomin Ma, Ze Xiang Shen
Summary: Potassium-ion batteries (KIBs) are gaining attention due to their low cost and abundance. However, the large-sized potassium ions limit their capacity and stability. In this study, we synthesized a Co9S8/GF nanocomposite by solvothermal and heat treatment methods. The Co9S8/GF nanocomposite showed a capacity of 345.65 mAh center dot g-1 after 600 cycles at 500 mA center dot g-1 and 343.06 mAh center dot g-1 after 1360 cycles at 5000 mA center dot g-1 in KIBs. The unique structure of the nanocomposite allows for volumetric changes, making it a promising technology for future KIB development.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Analytical
Igor A. Salimon, Ekaterina V. Zharkova, Aleksandr V. Averchenko, Jatin Kumar, Pavel Somov, Omar A. Abbas, Pavlos G. Lagoudakis, Sakellaris Mailis
Summary: This paper presents a method for the direct laser synthesis of periodically nanostructured 2D transition metal dichalcogenide (2D-TMD) films from single source precursors. Laser synthesis of MoS2 and WS2 tracks is achieved by localized thermal dissociation of Mo and W thiosalts, caused by the strong absorption of continuous wave (c.w.) visible laser radiation by the precursor film. Moreover, the formation of isolated nanoribbons with extreme periodic modulation in the thickness of the laser-synthesized TMD films is observed, which is attributed to the effect known as laser-induced periodic surface structures (LIPSS).
Article
Nanoscience & Nanotechnology
Nikolaos Aspiotis, Katrina Morgan, Benjamin Maerz, Knut Mueller-Caspary, Martin Ebert, Ed Weatherby, Mark E. Light, Chung-Che Huang, Daniel W. Hewak, Sayani Majumdar, Ioannis Zeimpekis
Summary: This work demonstrates a scalable process for producing large area atomically thin 2D semiconductors with uniform performance. The new atomic layer deposition (ALD) and conversion technique allows for independent control of layer thickness, stoichiometry, and crystallinity. Field effect transistors (FETs) fabricated using this process exhibit high field effect mobility, low subthreshold slope, and high on/off ratios. Additionally, non-volatile memory transistors using ferroelectric FETs (FeFETs) with multiple state switching and a wide memory window are demonstrated, showing the applicability of the process to flexible neuromorphic applications.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Aleksandr V. Averchenko, Igor A. Salimon, Ekaterina V. Zharkova, Svetlana Lipovskikh, Pavel Somov, Omar A. Abbas, Pavlos G. Lagoudakis, Sakellaris Mailis
Summary: By alloying, the optoelectronic properties of 2D-TMDC can be tailored, leading to enhanced photodetection performance. Seeking a scalable composition-controlled alloy preparation technology is essential.
MATERIALS TODAY ADVANCES
(2023)
Article
Chemistry, Physical
Yulia Lekina, David G. G. Bradley, Yonghao Xiao, Adisak Thanetchaiyakup, Xin Zhao, Jagjit Kaur, Sudip Chakraborty, Han Sen Soo, John V. V. Hanna, Ze Xiang Shen
Summary: In this study, the effect of hydrostatic pressure on the optical properties of hexadecylammonium lead iodide was investigated. It was found that the organic spacer can influence the mechanical and optoelectronic properties, leading to the formation of micrometer-scale bandgap junctions that can be used in novel optoelectronic devices.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Jon Gorecki, Adnane Noual, Sakellaris Mailis, Vasilis Apostolopoulos, Nikitas Papasimakis
Summary: Graphene plasmonic devices have shown potential for reconfigurable metasurfaces due to the tuneable electronic charge transport properties. This study proposes the use of iron-doped lithium niobate as a platform to optically define charge distributions for tuning graphene plasmonic resonances.
ADVANCED PHOTONICS RESEARCH
(2022)
