Article
Chemistry, Multidisciplinary
Rajendra Singh, Daniel Scheinecker, Ursula Ludacka, Jani Kotakoski
Summary: Graphene, the best known 2D material, is prone to corrugations. Factors such as the size of the free-standing area, preparation method, surface contamination, and electron-beam-induced disorder affect the corrugation in graphene.
Article
Chemistry, Multidisciplinary
Mahmoud Mohamed Saad Abdelnabi, Chiara Izzo, Elena Blundo, Maria Grazia Betti, Marco Sbroscia, Giulia Di Bella, Gianluca Cavoto, Antonio Polimeni, Isabel Garcia-Cortes, Isabel Rucandio, Alejandro Morono, Kailong Hu, Yoshikazu Ito, Carlo Mariani
Summary: Functionalization of graphene by incorporating hydrogen isotopes can lead to the opening of an energy gap, making it promising for various applications. Utilizing high-energy electron ionization and ion irradiation enables the production of low defect, high Deuterium (D) loaded graphene, showing potential for large-scale fabrication of semiconducting graphane.
Article
Physics, Applied
Son T. Le, Seulki Cho, Alexander Zaslavsky, Curt A. Richter, Arvind K. Balijepalli
Summary: This study reports on the sensitivity and noise performance of dual-gated graphene FETs. The devices exhibit high sensitivity and resolution when measuring pH, surpassing previously demonstrated sensors.
APPLIED PHYSICS LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Murilo H. M. Facure, Luiza A. Mercante, Daniel S. Correa
Summary: In this study, a nanofiber-based sensor was developed to detect endocrine-disrupting chemicals (EDCs). The sensor, fabricated by functionalizing a nanofibrous membrane with reduced graphene oxide (rGO), showed high sensitivity and low cost in detecting trace amounts of EDCs through electrical impedance measurements.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Maria Grazia Betti, Ernesto Placidi, Chiara Izzo, Elena Blundo, Antonio Polimeni, Marco Sbroscia, Jose Avila, Pavel Dudin, Kailong Hu, Yoshikazu Ito, Deborah Prezzi, Miki Bonacci, Elisa Molinari, Carlo Mariani
Summary: By exposing fully free-standing nanoporous samples of graphene to atomic hydrogen in ultrahigh vacuum, the researchers achieved an unprecedented level of hydrogenation, converting conductive graphene into a wide gap semiconductor. The experimental results confirmed the theoretical predictions of a stable, double-sided fully hydrogenated configuration without pi states.
Article
Chemistry, Multidisciplinary
Maria Grazia Betti, Elena Blundo, Marta De Luca, Marco Felici, Riccardo Frisenda, Yoshikazu Ito, Samuel Jeong, Dario Marchiani, Carlo Mariani, Antonio Polimeni, Marco Sbroscia, Francesco Trequattrini, Rinaldo Trotta
Summary: The adsorption of deuterium on nanoporous graphene reveals a homogeneous distribution and the formation of hybrid bonds. This study provides an efficient strategy for obtaining high-quality semiconducting graphane.
Article
Nanoscience & Nanotechnology
Mariia Samodelova, Olesya O. Kapitanova, Pavel Evdokimov, Olga E. Eremina, Eugene A. Goodilin, Irina A. Veselova
Summary: A scalable procedure of SERS substrates design was developed using a novel plasmonic structure based on a freestanding chitosan film, silver nanoparticles, and graphene oxide. The addition of graphene oxide suppresses background fluorescence signal and increases the signal-to-fluorescence background intensity ratio. The manufactured plasmonic polymer nanocomposite provides a detection limit of down to 100 pM and simplifies the procedure for creating a substrate.
Article
Chemistry, Multidisciplinary
Martin Lee, Johannes R. Renshof, Kasper J. van Zeggeren, Maurits J. A. Houmes, Edouard Lesne, Makars Siskins, Thierry C. van Thiel, Ruben H. Guis, Mark R. van Blankenstein, Gerard J. Verbiest, Andrea D. Caviglia, Herre S. J. van der Zant, Peter G. Steeneken
Summary: This study successfully combines graphene electrodes with free-standing complex oxide, BaTiO3 (BTO), to create ultrathin piezoelectric resonators with variable resonance frequency and ferroelectric memory effect.
ADVANCED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Seemesh Bhaskar, Naga Sai Visweswar Kambhampati, K. M. Ganesh, Mahesh P. Sharma, Venkatesh Srinivasan, Sai Sathish Ramamurthy
Summary: The study demonstrates a quest for auxiliary plasmonic materials with lossless properties by utilizing a unique plasmonic response from stratified high refractive index-graphene oxide and low refractive index-polymethyl methacrylate multistack. The platform achieved a zero-normal steering emission and directional graphene oxide plasmon-coupled emission, and showed potential for diverse biosensing applications. Experimental validation of the platform's superiority in achieving a low detection limit of human IFN-gamma was conducted, along with significant fluorescence emission enhancements on a lossless substrate using various nanoparticles, paving the way for unique light-matter interactions for next-generation plasmonic and biomedical technologies.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
E. Alejandra Huitron Segovia, D. Torres-Torres, A. Garcia-Garcia
Summary: Three-layer graphene oxide sheets rich in epoxy and hydroxyl groups were obtained by oxidation and chemical exfoliation and analyzed by free-standing indentations. This work compares the wrinkled surface behavior before and after loading and the relation with the adhesion effect. The mechano-chemical effects between the tip and graphene oxide during free-standing indentation were found to significantly decrease with increasing tip radius. The morphological and chemical characteristics of the sample were determined by scanning electron microscopy and X-ray photoelectron spectroscopy techniques.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Chemistry, Physical
Wenjie Yu, Yunyan Peng, Lijun Cao, Weiwei Zhao, Xiaoqing Liu
Summary: In this study, polybenzoxazine was used as a precursor to fabricate LIG via a defocused lasing process, showing excellent EMI shielding effectiveness. The rapid quench-peeling method for obtaining free-standing LIG films has enabled wider adaptability and possibilities for practical applications.
Article
Chemistry, Physical
Roberto Costantini, Alessio Giampietri, Dario Marchiani, Maria Grazia Betti, Samuel Jeong, Yoshikazu Ito, Alberto Morgante, Martina Dell'Angela, Carlo Mariani
Summary: The effects of optical excitation on fully hydrogenated free-standing nanoporous graphene have been studied, showing partial dehydrogenation of graphane and providing an estimation of its thermal conductivity. Furthermore, the dynamics of the C 1s core level under optical excitation display distinctive features.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
N. Medvedev, H. Noei, S. Toleikis, B. Ziaja
Summary: The study found that nonthermal disintegration is the main damage mechanism for a free-standing graphene layer, with charge-induced disintegration prevailing only at high absorbed doses. It was also discovered that femtosecond optical pulses in the soft UV regime can probe the progressing damage.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Polymer Science
Jialong Fu, Chaoyue Cai, Zhiheng Zhang, Xiaoying Wang, Cheng Wang, Haoyu Tu, Han Wu, Yibo Zhao, Chengyan Zhang, Jing Zhu, Xinhui Zhao, Ruibo Xu, Mingyan Wang, Peter Sherrell, Jun Chen
Summary: Flexible and free-standing SGE-PPy-PEG foam electrodes with excellent specific capacitance and electrochemical durability were prepared via one-step electrodeposition process. The electrodes demonstrated remarkable mechanical flexibility, making them suitable for real wearable applications.
Article
Physics, Applied
Weiwei Gong, Shigui Zheng, Zhijuan Zhang, Haidong Wang
Summary: Using a self-prepared individual carbon nanotube (CNT) mechanical force sensor, the study measured the adhesion between CNT and free-standing monolayer graphene and other bulk substrates under the same conditions, confirming the reliability of the experimental data. The results showed that suspended graphene exhibited the largest adhesion to the CNT, attributed to its low bending stiffness and extreme flexibility as an atomically thin layer. The study's main contribution was the experimental demonstration of the unusually high adhesion on suspended graphene.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Tatiana Latychevskaia, Colin Robert Woods, Yi Bo Wang, Matthew Holwill, Eric Prestat, Sara Mustafi, Sarah J. Haigh, Konstantin S. Novoselov
Summary: This study demonstrates the possibility of directly measuring scattering parameters through the intensity distribution of spots in CBED patterns. A method for recovering atomic scattering parameters from CBED patterns is proposed and validated through experiments and simulations.
Article
Nanoscience & Nanotechnology
Pengru Huang, Ruslan Lukin, Maxim Faleev, Nikita Kazeev, Abdalaziz Rashid Al-Maeeni, Daria V. Andreeva, Andrey Ustyuzhanin, Alexander Tormasov, A. H. Castro Neto, Kostya S. Novoselov
Summary: Modification of physical properties and design of materials with on-demand characteristics is crucial in modern technology. Machine learning methods are applied to these systems due to the difficulty in modeling designer materials. A new platform is developed for implementing machine learning techniques in materials design, utilizing datasets on pristine and defected materials.
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Elena Titova, Dmitry Mylnikov, Mikhail Kashchenko, Ilya Safonov, Sergey Zhukov, Kirill Dzhikirba, Kostya S. Novoselov, Denis A. Bandurin, Georgy Alymov, Dmitry Svintsov
Summary: Graphene's high carrier mobility, compatibility with on-chip waveguides and transistors, and small heat capacitance make it a promising material for the detection of terahertz (THz) radiation. However, the weak reaction of graphene's physical properties to the detected radiation is due to the absence of a band gap. This study investigates the effect of electrically induced band gap on THz detection in graphene bilayer with split-gate p-n junction, and demonstrates that the induction of a band gap leads to increased current and voltage responsivities.
Article
Chemistry, Multidisciplinary
Dali Ji, Yunah Lee, Yuta Nishina, Kazuhide Kamiya, Rahman Daiyan, Dewei Chu, Xinyue Wen, Masamichi Yoshimura, Priyank Kumar, Daria V. Andreeva, Kostya S. Novoselov, Gwan-Hyoung Lee, Rakesh Joshi, Tobias Foller
Summary: This study introduces a simple electrochemical method utilizing the angstrom confinement of laminar rGO nanochannels to achieve atomically thin transition metal oxides. The method allows for sub-unit-cell growth of 2D-TMO and demonstrates a balance between high activity and stability.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
M. Grzeszczyk, S. Acharya, D. Pashov, Z. Chen, K. Vaklinova, M. van Schilfgaarde, K. Watanabe, T. Taniguchi, K. S. Novoselov, M. I. Katsnelson, M. Koperski
Summary: It is discovered that despite similar structural and magnetic configurations, the coupling between excitons and magnetization is qualitatively different in CrBr3 and CrI3 films. Through a combination of optical spin pumping experiments and state-of-the-art theory, it is concluded that the hole-magnetization coupling has the opposite sign in CrBr3 and CrI3, as well as between the ground and excited exciton state. Efficient spin pumping capabilities are demonstrated in CrBr3 driven by magnetization via spin-dependent absorption, and the different origins of the magnetic hysteresis in CrBr3 and CrI3 are unraveled.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Mariana C. F. Costa, Pei Rou Ng, Sergey Grebenchuck, Jun You Tan, Gavin K. W. Koon, Hui Li Tan, Colin R. Woods, Ricardo K. Donato, Kostya S. Novoselov, Antonio H. Castro Neto
Summary: One of the important characteristics of 2D electrolytes is their ability to transform into 1D structures like nanoscrolls. However, these 1D structures are soft, unstable, and have poor electrical conductivity. Through the use of atomic force microscopy and electrical transport measurements, researchers have found that one-step, catalyst-free graphitization of graphene nanoscrolls enhances their structural stability and reduces their structural disorder. These changes in physical properties open up possibilities for the study of exotic materials and various industrial applications.
Article
Chemistry, Physical
Xuanye Leng, Ricardo J. Vazquez, Samantha R. McCuskey, Glenn Quek, Yude Su, Konstantin G. Nikolaev, Mariana C. F. Costa, Siyu Chen, Musen Chen, Kou Yang, Jinpei Zhao, Mo Lin, Zhaolong Chen, Guillermo C. Bazan, Kostya S. Novoselov, Daria V. Andreeva
Summary: The high electrical conductivity and low dimensionality of graphene are crucial for lightweight bioanodes in new-generation energy technologies. However, integrating graphene in biointerfaces is challenging due to its incompatible surface energy with living matter. We propose a sustainable chemical control method to achieve the desired surface hydrophilicity and conductivity of graphene nanowalls, enabling the formation of a lightweight, graphene-based, sponge bioanode. This novel graphene-based material shows stable and rapid response, with a biocurrent density of 135.35 mA m(-2) achieved within a few hours.
Article
Materials Science, Multidisciplinary
Qin Qin, Weiqi Cao, DaWa Zhaxi, Xianyong Chen, Daria V. Andreeva, Kefan Chen, Shuai Yang, Hao Tian, Majid Shaker, Zhan Jin, Kostya S. Novoselov
Summary: In this study, composite phase change materials (PCMs) (EG-PCM and SA-PCM) with stable shape were prepared using 1-decanol, expanded graphite (EG), and silica aerogel (SA). The optimal contents of EG and SA in the composite PCMs were determined to be 9% and 14% respectively. The composite PCMs showed good thermal stability even after 220 heating/cooling cycles. The thermal conductivity of EG-PCM and SA-PCM was enhanced to 16.09 times and 1.21 times of the neat PCM, respectively. The composite PCMs effectively maintained the temperature and acidity of yogurt for several hours in a cold chain transport portable box.
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2023)
Article
Engineering, Chemical
Musen Chen, Maxim Trubyanov, Pengxiang Zhang, Qian Wang, Zelong Li, Kostya S. Novoselov, Daria Andreeva
Summary: Graphene oxide (GO) based multi-layered membranes have exceptional molecular-sieving properties for gas separation, especially for hydrogen decarbonization. However, the mechanism of gas permeation through two-dimensional GO membranes is very different from traditional polymeric membranes due to their multilayer, laminated nature. Understanding and measuring gas transport parameters, such as diffusivity and solubility, are crucial for the strategic design of novel membranes based on two-dimensional materials.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Multidisciplinary Sciences
Na Xin, James Lourembam, Piranavan Kumaravadivel, A. E. Kazantsev, Zefei Wu, Ciaran Mullan, Julien Barrier, Alexandra A. Geim, I. V. Grigorieva, A. Mishchenko, A. Principi, V. I. Fal'ko, L. A. Ponomarenko, A. K. Geim, Alexey I. Berdyugin
Summary: The most distinctive feature of graphene is its electronic spectrum, in which the Dirac point is located. At low temperatures, the intrinsic behavior of this spectrum is often hidden by charge inhomogeneity, but thermal excitations can overcome the disorder at higher temperatures and create an electron-hole plasma. The behavior of this plasma in magnetic fields is not well understood at present.
Article
Multidisciplinary Sciences
Ye-Chuang Han, Jun Yi, Beibei Pang, Ning Wang, Xu-Cheng Li, Tao Yao, Kostya S. Novoselov, Zhong-Qun Tian
Summary: A novel graphene-confined ultrafast radiant heating (GCURH) method is developed to synthesize high-loading metal cluster catalysts in microseconds, overcoming the trade-off between ultrasmall size and high loading. The graphene acts as a diffusion-constrained nanoreactor, providing kinetics-dominant and diffusion-constrained conditions for the synthesis of subnanometer metal clusters.
NATIONAL SCIENCE REVIEW
(2023)
Correction
Nanoscience & Nanotechnology
Pengru Huang, Ruslan Lukin, Maxim Faleev, Nikita Kazeev, Abdalaziz Rashid Al-Maeeni, Daria V. Andreeva, Andrey Ustyuzhanin, Alexander Tormasov, A. H. Castro Neto, Kostya S. Novoselov
NPJ 2D MATERIALS AND APPLICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Musen Chen, Qian Wang, Maxim Trubyanov, Kou Yang, Aleksandr S. Aglikov, Ge Qi, Ekaterina V. Skorb, Kostya S. Novoselov, Daria V. Andreeva
Summary: This study demonstrates the feasibility of large-scale self-assembly of graphene oxide flakes into anisotropic films using a simple blade coating technique. They also propose a statistical analysis method utilizing scanning electron microscopy images for the characterization of materials with macroscopic surface morphology. Furthermore, the application of these films as low-dimensional soft actuators is explored, showcasing their outstanding stimuli-responsive performance and self-adaptation to the environment.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Physical
Kendon Shirley, Hsinhan Tsai, Nicholas Cucciniello, Jonathan Bird, Quanxi Jia, Elias Torres, Phil Butler, Anthony Butler, Jerome Crocco, Eslam Taha, Abdulsalam Alhawsawi, Jessica Germino, Maoz Dor, Chaochao Dun, Omer Firat, Jared Parker, Matt Graham, Kostya S. Novoselov, Wanyi Nie
Summary: We have developed a recyclable perovskite-graphene heterostructure for high-performance X-ray detection in medical imaging. The graphene pixel maintains high mobility even after perovskite deposition, enabling efficient conversion for ultrahigh sensitivity. By increasing the operational bias of the graphene channel, the signal-to-noise ratio of X-ray detection can be significantly improved. The perovskite layer can be easily washed off without damaging the graphene, making our heterostructure X-ray detector recyclable.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Physical
Nikita Kazeev, Abdalaziz Rashid Al-Maeeni, Ignat Romanov, Maxim Faleev, Ruslan Lukin, Alexander Tormasov, A. H. Castro Neto, Kostya S. Novoselov, Pengru Huang, Andrey Ustyuzhanin
Summary: Two-dimensional materials offer a promising platform for next-generation electronic devices and high-tech applications. We propose a machine learning approach to estimate the properties of 2D materials based on their lattice structure and defect configuration, allowing for rapid tuning of material properties. Our methodology outperforms state-of-the-art approaches in terms of energy prediction accuracy and resource efficiency.
NPJ COMPUTATIONAL MATERIALS
(2023)
