Article
Nanoscience & Nanotechnology
Bingdong Chang, Ding Zhao
Summary: A controllable assembly strategy based on 3D aligned silicon nanowires is presented, utilizing a focused electron beam to induce dielectrophoretic forces and achieve elastic deformations and sticking between adjacent nanowires. The process is performed in a vacuum environment to exclude capillary or hydrodynamic forces. Ordered organizations and hierarchical assembly are explored, with the observation of unsynchronized assembly in two layers of nanowires, providing insights into nanoscale sticking phenomena and electrostatic actuations in nanoelectromechanical systems.
Article
Materials Science, Textiles
Xiaoxing Shen, Pu Gao, Qiulan Luo, Jie Zhou, Kun Tian, Yujie Shi, Hui Ma
Summary: In this study, wool was colored and functionalized with antistatic properties using a one-step ecofriendly process involving superfine graphene oxide (GO). The results showed that this approach significantly improved the antistatic performance of wool fabrics and provided a basis for developing wool fabrics with designed functions.
JOURNAL OF ENGINEERED FIBERS AND FABRICS
(2022)
Article
Physics, Applied
Eugenia Pyurbeeva, Jacob L. Swett, Qingyu Ye, Oscar W. Kennedy, Jan A. Mol
Summary: Feedback-controlled electric breakdown of graphene can be applied to encapsulated graphene constrictions, resulting in conductance switching behavior attributed to atomic-scale fluctuations of graphene below the encapsulating layer. This method opens up possibilities for fabricating encapsulated room-temperature single-electron nanodevices and provides insights into the physical mechanism of conductance switching in graphene nanodevices.
APPLIED PHYSICS LETTERS
(2021)
Article
Environmental Sciences
Joseph Kirubaharan, Jian-Wei Wang, Syed Zaghum Abbas, Syed Bilal Shah, Yafei Zhang, Jing-Xian Wang, Yang -Chun Yong
Summary: Researchers developed a three-dimensional macroporous reduced graphene oxide/polypyrrole hydrogel made by bacterial cells for microbial fuel cells. The self-assembly process of cell-embedding rGO/Ppy hydrogel enhanced the electrochemical activity of the bioelectrode and reduced the electron charge transfer resistance between the cells and the electrode.
Article
Materials Science, Ceramics
Jiawen Wu, Wentao Xu, Tianwen Dong, Ming Jin, Youfu Zhou
Summary: Incorporating graphene into ceramic matrices can create a fine microstructure with unique interfaces, allowing for the combination of excellent mechanical and electrical properties in bulk quantities. This study proposes a self-assembly strategy for the fabrication of graphene oxide-ZrO2 hybrids, achieving homogeneous and nondestructive results. The resulting composites exhibit improved flexural strength, fracture toughness, and reduced anisotropy.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
John J. Cully, Jacob L. Swett, Kyle Willick, Jonathan Baugh, Jan A. Mol
Summary: The synthesis of low-dimensional materials with unique properties has opened up new possibilities for creating hybrid nanomaterial devices. However, challenges remain in integrating individual nanoparticles into devices at scale. A graphene nanogap platform has been developed to address this issue, allowing for the capture and integration of single nanoparticles for applications in novel devices and optoelectronics.
Article
Chemistry, Multidisciplinary
Mikiko Vazquez-Nakagawa, Laura Rodriguez-Perez, Nazario Martin, M. Angeles Herranz
Summary: This study describes a method for preparing new chiral graphene quantum dots through chemical functionalization, and examines their supramolecular assembly using microscopy. Fluorescence studies show that the fibers stem from the pi-pi stacking of pyrenes and GQDs, along with the hydrogen bonding interactions of the amide groups.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Chemistry, Physical
Ondrej Dyck, Jacob L. Swett, Charalambos Evangeli, Andrew R. Lupini, Jan A. Mol, Stephen Jesse
Summary: Graphene is proposed for various nanodevice designs, but faces challenges in visualization, measurement, and manipulation at nanometer and atomic scales. This study demonstrates the use of SEEBIC imaging technique to visualize conductance and connectivity in graphene nanodevices, as well as detect subtle differences in charge transport.
Article
Nanoscience & Nanotechnology
Christian Dolle, Peter Schweizer, Daniela Dasler, Sebastian Gsaenger, Robert Maidl, Gonzalo Abellan, Frank Hauke, Bernd Meyer, Andreas Hirsch, Erdmann Spiecker
Summary: Covalent functionalisation is an effective approach to tune the properties and processability of graphene. This study successfully observed atomic resolution imaging of dodecyl functionalised monolayer graphene using mechanical filtering method, providing new possibilities for the investigation of this hybrid material.
NPJ 2D MATERIALS AND APPLICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Chengfei Yue, Changkun Ding, Xuan Du, Yanjie Wang, Jieliang Su, Bowen Cheng
Summary: The research investigated the self-assembly of collagen on GO nanosheets to explore their distribution, conformation, and interaction. It was found that collagen concentration, incubation time, and pH of the dispersion affect the size and position of collagen fibrils on GO nanosheets. The strong interfacial interactions between GO nanosheets and collagen lead to enhanced mechanical properties and biocompatibility of nanocomposite films, promoting neuronal differentiation of SH-SY5Y cells.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Multidisciplinary Sciences
Md Abdullah Al Faruque, Rechana Remadevi, Albert Guirguis, Alper Kiziltas, Deborah Mielewski, Maryam Naebe
Summary: This study successfully utilized a hybrid fiber made from waste wool and PAN to create smart textile materials with high electrical conductivity, treated with coating and chemical reduction methods, providing a potential solution for eco-friendly smart textile applications.
SCIENTIFIC REPORTS
(2021)
Article
Biochemistry & Molecular Biology
Jana Branisa, Angela Kleinova, Klaudia Jomova, Robert Weissabel, Marcel Cvik, Zuzana Branisova, Maria Porubska
Summary: The study examined the effect of humidity on sheep wool irradiated by an accelerated electron beam. Results showed that wool sorptivity was significantly dependent on humidity, with 53% RH demonstrating the best Co(II) sorptivity. Excessive humidity and high dose of radiation led to decreased sorptivity due to radiolysis of water.
Article
Chemistry, Physical
Surita Basu, Bhukya Vishnu Naik, Kalluri Ankarao, Prabir Patra, Jayati Sarkar
Summary: The study demonstrates the unique self-assembled graphene patterns formed at the interface between graphene and a thin polystyrene film at room temperature. These structures could potentially be used in fabricating biosensors, supercapacitors, and biomedical microfluidic devices on bio-compatible polymer.
SURFACES AND INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Luyao Wei, Zhiquan Lu, Xiang Ji, Yike Jiang, Lan Ma
Summary: Hollow graphene oxide microcapsules prepared using liquid nitrogen cavitation effects showed potential as drug carriers due to their unique properties and good drug loading capacity, exhibiting excellent cytotoxicity to cancer cells and pH-dependent drug release performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Chui-Yi Kung, Tzong-Liu Wang, Hung-Yin Lin, Chien-Hsin Yang
Summary: In this study, a robust high-performance polyaniline-modified graphene electrode was successfully used in assembling a supercapacitor, showing high specific capacitance values and excellent cycling performance.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Debendra Acharya, Ishwor Pathak, Bipeen Dahal, Prakash Chandra Lohani, Roshan Mangal Bhattarai, Alagan Muthurasu, Taewoo Kim, Tae Hoon Ko, Kisan Chhetri, Hak Yong Kim
Summary: The combination of bimetallic oxide nanomaterials and porous carbon materials has significantly contributed to the development of high-performance energy storage devices. Researchers have successfully synthesized porous multimetal nanomaterials using a self-templated metal-organic framework strategy, resulting in excellent electrochemical performance in supercapacitors.
Article
Multidisciplinary Sciences
Yasser Zare, Kyong Yop Rhee, Soo-Jin Park
Summary: This study presents a power equation for the conductivity of graphene-based polymer composites based on the tunneling length, interphase deepness, and filler size. The study also explores the impact of these factors on the effective concentration and percolation beginning of graphene nano-sheets in nanocomposites. The developed equations are validated using experimental data and provide estimations for interphase depth, tunneling size, and percolation exponent.
SCIENTIFIC REPORTS
(2023)
Review
Chemistry, Multidisciplinary
Gunendra Prasad Ojha, Gun Woong Kang, Yun-Su Kuk, Ye Eun Hwang, Oh Hoon Kwon, Bishweshwar Pant, Jiwan Acharya, Yong Wan Park, Mira Park
Summary: Silicon carbide (SiC) is a highly promising carbide material known for its applications in electrochemical supercapacitors, photocatalysis, microwave absorption, field-effect transistors, and sensors. It offers advantages such as high thermal stability, chemical stability, thermal conductivity, and mechanical behavior, making it a potential candidate in various fields. This review focuses on the synthesis techniques and properties of nanostructured SiC (0D, 1D, 2D, and 3D), as well as the current research trends in electrochemical supercapacitor electrodes. The review also highlights future research directions, key obstacles, and possible solutions.
Article
Chemistry, Multidisciplinary
Won-Jong Choi, Seul-Yi Lee, Soo-Jin Park
Summary: By using ambient plasma treatment, boron nitride nanosheets (BNNS) can be prepared as fillers in epoxy nanocomposites with high thermal conductivity and fracture toughness.
Article
Chemistry, Physical
Yasser Zare, Kyong Yop Rhee, Soo-Jin Park
Summary: A new Halpin-Tsai model is developed to calculate the modulus of halloysite-nanotube based composites considering the nets of filler and interphase. The calculations match well with experimental facts, and the parametric examinations show acceptable outputs.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Ari Chae, G. Murali, Seul-Yi Lee, Jeonghwan Gwak, Seon Joon Kim, Yong Jin Jeong, Hansol Kang, Seongmin Park, Albert S. Lee, Dong-Yeun Koh, Insik In, Soo-Jin Park
Summary: Recently, MXene-based wearable hydrogels have become promising candidates for epidermal sensors due to their softness and unique properties. However, it is challenging to achieve reliable sensing performance and prolonged service life due to MXene oxidation in water-containing hydrogels. To address this issue, catechol-functionalized poly(vinyl alcohol) (PVA-CA)-based hydrogels are proposed to inhibit MXene oxidation, resulting in rapid self-healing and superior strain sensing behaviors. The PVA-CA-MXene hydrogel demonstrates potential for real-time motion monitoring and accurate signal classification using deep learning models.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Seong-Min Ji, Alagan Muthurasu, Hak Yong Kim
Summary: This work describes a concise method for generating marigold flower-like metal-organic frameworks (MOFs) aided manganese vanadium oxide via a hydrothermal procedure for increased OER activity. As synthesized MOF MnV oxide has a higher surface area due to the 3D flower-like structure, which is reinvented with enhanced electrocatalytic active sites. These distinctive structural features result in remarkable catalytic activity for MOF MnV oxide microflowers towards OER.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Review
Pharmacology & Pharmacy
Bishweshwar Pant, Mira Park, Allison A. Kim
Summary: Dural defects are a common problem in neurosurgical procedures and various types of dural substitutes, including electrospun nanofibers, have been used for their repair. This review summarizes the investigation and development of electrospun nanofibers for dura mater regeneration, highlighting their interesting properties and current limitations. The objective is to provide readers with a quick overview of recent advances in electrospinning for dura mater repair.
Article
Chemistry, Physical
Yasser Zare, Kyong Yop Rhee, Soo-Jin Park
Summary: The effects of Lc on the depth of the operative interphase, operative filler concentration, and mechanical percolation start are studied. An equation is proposed to determine the strength of HNT composites with an imperfect interphase and an HNT network. The relationships between B and Lc, HNT size, and percolation start are analyzed. The lowest Lc, lowest percolation start point, slimmest and longest HNTs, and highest interfacial shear strength yielded the highest B values and the toughest samples.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Alagan Muthurasu, Prabhakaran Sampath, Tae Hoon Ko, Prakash Chandra Lohani, Ishwar Pathak, Debendra Acharya, Kisan Chhetri, Do Hwan Kim, Hak Yong Kim
Summary: A defect-rich porous framework composed of metal-organic compound networks is developed to create high-performance electrocatalysts with improved electrochemical activity, conductivity, and mass transport properties. The resulting hollow carbon nanostructures with in situ-grown N-doped graphitic carbon matrix and embedded selenium-doped CoS2 hollow spheres exhibit efficient and long-lasting chemical energy conversion functions. Additionally, a zinc-air battery with excellent discharge-charge performance and mechanical stability is successfully constructed using this technique.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Applied
Junhyung Park, Soo-Jin Park, Seok Kim
Summary: To improve the electrochemical performance of Li-S batteries, sulfur composites are prepared through melt-diffusion of sulfur into porous materials such as MOFs. The effect of reactant concentration on particle size distribution of ZIF-67 is studied, and the performance of the product as a sulfur host for Li-S battery cathode is evaluated.
APPLIED ORGANOMETALLIC CHEMISTRY
(2023)
Review
Energy & Fuels
Kisan Chhetri, Anup Adhikari, Jyotendra Kunwar, Debendra Acharya, Roshan Mangal Bhattarai, Young Sun Mok, Achyut Adhikari, Amar Prasad Yadav, Hak Yong Kim
Summary: Zeolitic Imidazolate Frameworks (ZIFs) and their hybrid composites have shown promising potential in supercapacitors due to their excellent conductivity and high surface area. Pure ZIFs have poor electrochemical performance, but can be improved by mixing with other materials to prepare hybrid composites. ZIFs' porous structure and large surface area make them an ideal template for designing composites with excellent supercapacitor applications.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Review
Chemistry, Multidisciplinary
Anup Adhikari, Kisan Chhetri, Rajan Rai, Debendra Acharya, Jyotendra Kunwar, Roshan Mangal Bhattarai, Rupesh Kumar Jha, Dasharath Kandel, Hak Yong Kim, Mani Ram Kandel
Summary: Zinc-air batteries (ZABs) have received significant attention as a potential alternative to lithium-ion batteries (LIBs) due to their impressive energy density and low cost. Electrocataysts play a crucial role in enhancing the efficiency and stability of zinc-air batteries. This scholarly review article highlights the importance of electrocatalysts in ZABs and explores the use of Fe-Co-Ni-Zn-based metal-organic framework (MOF)-derived hybrid materials as potential electrocatalysts. These MOF-derived electrocatalysts offer advantages such as abundance, high catalytic activity, tunability, and structural stability, making them suitable for ZAB applications.
Review
Chemistry, Multidisciplinary
Seong-Hwang Kim, Seul-Yi Lee, Yali Zhang, Soo-Jin Park, Junwei Gu
Summary: This review provides a comprehensive overview of stealth technology and radar absorbing materials (RAMs), with a particular focus on carbon-based materials. It discusses the history and basic concepts of stealth technology and RAMs, and explores recent advancements and strategies in carbon-based RAMs for electromagnetic attenuation. The review highlights the potential of carbon-based RAMs for practical applications and emphasizes the need for further research to enhance their performance.
Article
Chemistry, Multidisciplinary
Choong-Hee Kim, Seul-Yi Lee, Soo-Jin Park
Summary: This study successfully prepared activated carbons using coffee grounds and potassium oxalate as a biomass precursor and an activating reagent. The activated carbons showed high CO2 adsorption capacity due to their high microporosity, demonstrating the potential for eco-friendly CO2 capture with energy efficiency and mass production.
