Article
Chemistry, Physical
Yunbiao Zhao, Yue li, Yi Chen, Yuhan Chen, Danqing Zhou, Ziqiang Zhao
Summary: The direct synthesis of high-quality and uniform graphene on dielectric substrates is achieved by employing a Cu ion implantation assisted method, improving the growth rate of graphene without introducing metal contamination. An interesting growth behavior of graphene on sapphire substrate was observed, indicating potential applications in electronics.
Article
Chemistry, Multidisciplinary
Junkui Zhu, Honglie Shen, Zehui Wang, Yufang Li, Tianru Wu, Weibiao Mao, Jingzhe Zhang
Summary: In this work, high-quality vertical graphene nanowalls (VGN) were successfully prepared without catalysts through hot-wire chemical vapor deposition. The VGN exhibited low defect density, few layers, and submicron domain size. The prepared VGN showed excellent electrical properties and high output power in dropping-ion-droplet nano-power generation devices.
Article
Nanoscience & Nanotechnology
Yuki Ueda, Takahiro Maruyama, Shigeya Naritsuka
Summary: The graphene island density decreased while the growth rate increased with the increase of growth pressure. The catalytic effect of the a-plane sapphire surface facilitated the successful growth of high-quality and highly uniform single-layer graphene.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Lorenzo Pedrazzetti, Eugenio Gibertini, Fabio Bizzoni, Valeria Russo, Andrea Lucotti, Luca Nobili, Luca Magagnin
Summary: This study investigates the possibility of using electroformed Cu substrate as a catalyst for graphene growth at atmospheric pressure, finding a relationship between graphene growth mode and surface morphology, as well as the impact of substrate material treatment. Suitable conditions for growing single layer graphene were identified.
Article
Chemistry, Multidisciplinary
Su Han Kim, Shiru Jiang, Sang-Shin Lee
Summary: Three-dimensional (3D) graphene is successfully grown on a patterned sapphire substrate (PSS) using metal-catalyst-assisted chemical vapor deposition. However, transferring the 3D graphene film without compromising its integrity is challenging due to the low etching rate of PSS. To address this issue, a transfer-support layer (TSL) is coated on PSS before the growth of 3D graphene. The TSL allows for easy and high-quality transfer of the 3D graphene onto a flexible substrate.
Article
Chemistry, Multidisciplinary
Issam Boukhoubza, Elena Matei, Anouar Jorio, Monica Enculescu, Ionut Enculescu
Summary: ZnO nanostructures were synthesized using electrochemical methods and their properties were investigated under different potentials. It was found that using a graphene/Cu electrode led to the formation of ZnO nanowires with smaller diameter and higher emission intensity compared to deposition directly on copper surface.
Article
Chemistry, Multidisciplinary
Yeshu Zhu, Jincan Zhang, Ting Cheng, Jilin Tang, Hongwei Duan, Zhaoning Hu, Jiaxin Shao, Shiwei Wang, Mingyue Wei, Haotian Wu, Ang Li, Sheng Li, Osman Balci, Sachin M. Shinde, Hamideh Ramezani, Luda Wang, Li Lin, Andrea C. Ferrari, Boris I. Yakobson, Hailin Peng, Kaicheng Jia, Zhongfan Liu
Summary: This study demonstrates the elimination of twin boundaries on Cu and the synthesis of high-quality SCG wafers on single-crystal Cu(111) substrates. The as-synthesized SCG wafers exhibit improved crystallinity and performance.
ADVANCED MATERIALS
(2023)
Article
Multidisciplinary Sciences
Isaac G. Juma, Gwangwoo Kim, Deep Jariwala, Sanjay K. Behura
Summary: This article presents a perspective on synthetic strategies involving direct nucleation of h-BN on various dielectric substrates and its heterostructures with graphene. Mechanistic understanding and design methodologies for direct growth of h-BN via bottom-up approaches are reviewed, showcasing the potential practical applications of these complex 2D heterostructures.
Article
Materials Science, Multidisciplinary
Hiroyuki Nishinaka, Kazuki Shimazoe, Kazutaka Kanegae, Masahiro Yoshimoto
Summary: The study conducted mist chemical vapor deposition to fabricate alpha-Ga2O3 epitaxial thin films on alpha-Fe2O3 substrates. XRD analysis confirmed the epitaxial growth of c-plane alpha-Ga2O3 thin films on c-plane alpha-Fe2O3 substrates. The use of alpha-Fe2O3 substrates resulted in lower asymmetric diffraction (10-14) full width at half maximum for alpha-Ga2O3 compared to alpha-Al2O3. Additionally, XRD pole figure analysis indicated that alpha-Ga2O3 on alpha-Fe2O3 had no in-plane rotations, suggesting that alpha-Fe2O3 substrates with small lattice mismatches are promising for alpha-Ga2O3 without rotational domains.
Article
Multidisciplinary Sciences
Meihui Wang, Ming Huang, Da Luo, Yunqing Li, Myeonggi Choe, Won Kyung Seong, Minhyeok Kim, Sunghwan Jin, Mengran Wang, Shahana Chatterjee, Youngwoo Kwon, Zonghoon Lee, Rodney S. Ruoff
Summary: Restricting the initial growth temperatures used for chemical vapour deposition of graphene on metal foils produces optimum conditions for growing large areas of fold-free, single-crystal graphene, which exhibit highly uniform transport properties.
Article
Chemistry, Physical
Robert M. Jacobberger, Donald E. Savage, Xiaoqi Zheng, Pornsatit Sookchoo, Richard Rojas Delgado, Max G. Lagally, Michael S. Arnold
Summary: This study investigates the effects of Ge surface orientation on graphene island formation, strain in large-area graphene films, and nanofaceting of Ge below graphene. The results show that the growth morphology and properties of graphene vary on different Ge surface orientations, but graphene exhibits a certain degree of strain regardless of the orientation.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Bingzhi Liu, Huihui Wang, Wei Gu, Le Zhou, Zhaolong Chen, Yufeng Nie, Congwei Tan, Haina Ci, Nan Wei, Lingzhi Cui, Xuan Gao, Jingyu Sun, Yanfeng Zhang, Zhongfan Liu
Summary: The study introduces an oxygen-assisted CVD strategy to directly synthesize large-scale graphene on glass, significantly increasing graphene domain size. The resulting graphene glass demonstrates record high electrical conductivity and can be used as transparent electrodes for high-performance optical filter devices. This work opens up a new pathway for scalable production and application of high-quality and cost-effective graphene glass materials.
Article
Materials Science, Multidisciplinary
Xue Li, Ateeq Ahmed, Byung-Sang Choi
Summary: The three-dimensionally interconnected graphene-reinforced Cu composite shows enhanced electrical conductivity and improved corrosion resistance, attributed to the interconnected graphene network and impermeability of graphene to chemical species.
KOREAN JOURNAL OF METALS AND MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Ting Cheng, Zhirong Liu, Zhongfan Liu, Feng Ding
Summary: Researchers systematically explored the absorption of carbon species on insulating substrates and found that graphene growth is dominated by reactions between active carbon species and hydrogen-passivated graphene edges, rather than being influenced by the substrate type. The gas phase precursor CH3 plays crucial roles in feeding graphene growth and removing excessive hydrogen atoms from graphene edges during growth on insulating substrates. The calculated threshold reaction barriers for graphene growth on insulating substrates suggest that zigzag edges grow faster than armchair edges.
Article
Engineering, Environmental
Junggeon Park, Nayeong Jeon, Sanghun Lee, Goeun Choe, Eunji Lee, Jae Young Lee
Summary: A conductive hydrogel with high electrical properties was developed using reduced graphene oxide (rGO) networks in graphene oxide (GO) coated agarose microbeads through thermal annealing. The conductive hydrogel showed excellent biocompatibility and potential applications in biomedicine.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Donghun Lee, Haeli Park, Soo Deok Han, Su Han Kim, Woong Huh, Jae Yoon Lee, Yoon Seok Kim, Myung Jin Park, Won Il Park, Chong-Yun Kang, Chul-Ho Lee
Editorial Material
Materials Science, Multidisciplinary
Won Jun Chang, Won Il Park
MATERIALS RESEARCH BULLETIN
(2019)
Article
Chemistry, Multidisciplinary
Sohee Cheon, Won Woo Lee, Won Il Park, Joo-Yun Jung, Jun-Hyuk Choi, Dae-Geun Choi, Sohee Jeon, Jun-ho Jeong, Jihye Lee
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2020)
Article
Materials Science, Multidisciplinary
Hyo Sang Kang, Joo Hyung Lee, Jae Hwa Park, Hee Ae Lee, Won Il Park, Seung Min Kang, Sung Chul Yi
KOREAN JOURNAL OF METALS AND MATERIALS
(2019)
Article
Nanoscience & Nanotechnology
Won Jun Chang, Gyu Hyeon Lee, Yeong Jun Cheon, Jin Tae Kim, Sang Il Lee, Jaehyuk Kim, Myungseop Kim, Won Il Park, Yun Jung Lee
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Physical
Su Han Kim, Jie Jiang, Suhee Jang, Jae Hyung Lee, Dong Won Yang, Won Jun Chang, Jae Hyeok Shin, Nuri Oh, Jaeyong Kim, Ruth Pachter, Won Il Park
Article
Chemistry, Physical
Sang Il Lee, Hyeong-Gyu Lim, Sun Sang Kwon, Su Han Kim, Jae Hyung Lee, Jeong-Min Park, Jae-il Jang, Sung Ik Yang, Won Il Park
APPLIED SURFACE SCIENCE
(2020)
Article
Electrochemistry
Chuang Yue, Won Jun Chang, Won Il Park, Gaozhan Liu, Jing Li
ELECTROCHEMISTRY COMMUNICATIONS
(2020)
Article
Nanoscience & Nanotechnology
Dong Won Yang, Keundong Lee, Suhee Jang, Won Jun Chang, Su Han Kim, Jae Hyung Lee, Gyu-Chul Yi, Won Il Park
Article
Chemistry, Physical
Junseok Jeong, Dae Kwon Jin, Joonghoon Choi, Junho Jang, Bong Kyun Kang, Qingxiao Wang, Won Il Park, Mun Seok Jeong, Byeong-Soo Bae, Woo Seok Yang, Moon J. Kim, Young Joon Hong
Summary: Remote epitaxy of GaN p-n homojunction microcrystals has been demonstrated for fabricating transferable, flexible white light-emitting diodes (WLEDs). The WLEDs show reliable performance even after repetitive bending and cycling temperature environments, making them suitable for flexible and modular light panels.
Article
Nanoscience & Nanotechnology
Young Joon Hong, Rajendra K. Saroj, Won Il Park, Gyu-Chul Yi
Summary: This Perspective provides a review of current research activities on one-dimensional semiconductor nanostructures grown on two-dimensional nanomaterials for flexible electronic and optoelectronic device applications. The combination of excellent material characteristics of 1D nanostructures and good properties of 2D layers holds great potential for a wide range of applications in optoelectronics and electronics.
Article
Chemistry, Physical
Jae Hyeok Shin, Suhee Jang, Su Han Kim, Won Jun Chang, Jaeyong Kim, Sung Ik Yang, Won Il Park
Summary: Transition metal dichalcogenides (TMDCs) were grown on diatom frustules using metal-organic chemical vapor deposition, resulting in high-quality and uniform monolayer MoS2 films throughout complex morphologies. These atomically thin layers provided a uniform conducting path for electrons during scanning electron microscopy operations, minimizing signal reduction and deformation compared to conventional conducting layer coatings.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Hee Ae Lee, Jae Hwa Park, Joo Hyung Lee, Seung Hoon Lee, Hyo Sang Kang, Seong Kuk Lee, Won Il Park, Sung Chul Yi
Summary: The study found that GaN surface can undergo thermal decomposition and oxidation under different thermal treatment conditions, with 900 degrees C annealing for 3 hours being the most effective in releasing internal residual stress and ensuring the best crystal quality.
ELECTRONIC MATERIALS LETTERS
(2021)
Article
Materials Science, Ceramics
Hee Ae Lee, Joo Hyung Lee, Seung Hoon Lee, Hyo Sang Kang, Seong Kuk Lee, Nuri Oh, Won Il Park, Jae Hwa Park
JOURNAL OF CERAMIC PROCESSING RESEARCH
(2020)
Article
Chemistry, Multidisciplinary
Jae Hyung Lee, Won Jun Chang, Won Young Choi, Jeong-Min Park, Jae-il Jang, Won Il Park
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.
