Article
Chemistry, Multidisciplinary
Emily Schifano, Gianluca Cavoto, Francesco Pandolfi, Giorgio Pettinari, Alice Apponi, Alessandro Ruocco, Daniela Uccelletti, Ilaria Rago
Summary: The emergence of multidrug-resistant bacteria is a growing threat to public health, necessitating the development of non-antibiotic antibacterial approaches. In this study, vertically aligned carbon nanotubes (VA-CNTs) with controlled nanomorphology were proposed as effective platforms for bacteria eradication. Through a combination of microscopic and spectroscopic techniques, the topography of VA-CNTs was tailored in a controlled and time-efficient manner using plasma etching processes. The highest reduction in cell viability was observed for VA-CNTs modified using plasma etching with Ar and O-2, indicating their potential as a surface for inactivating both planktonic and biofilm infections.
Article
Nanoscience & Nanotechnology
Kevin Laughlin, Richard R. Vanfleet, Robert C. Davis
Summary: Researchers have developed VACNT/carbon composite films with higher stiffness and strength than pure VACNTs, while maintaining low reflectance. These composites can withstand water exposure and handling, making them a promising material.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Biomedical
Luis Nascimento, Cristiana Fernandes, Ricardo. M. Silva, Angela Semitela, Barbara M. de Sousa, Paula A. A. P. Marques, Sandra I. Vieira, Rui. F. Silva, Nathalie Barroca, Gil Goncalves
Summary: A novel therapeutic approach based on carbon nanotubes (CNTs) is explored in this study to enhance the regeneration of neural cells. Different morphologies of CNTs are created and tested for their ability to stimulate the formation of neurons and networks. The findings provide a new avenue for the construction of electroresponsive scaffolds for neural tissue engineering.
ADVANCED HEALTHCARE MATERIALS
(2023)
Review
Nanoscience & Nanotechnology
August Kohls, Mackenzie Maurer Ditty, Fahimeh Dehghandehnavi, Si-Yang Zheng
Summary: Vertically aligned carbon nanotubes (VACNTs) have numerous advantages that make them highly desirable in biomedical applications. This review discusses the utilization of VACNTs in sensing, biomolecule filtration systems, cell stimulation, regenerative medicine, drug delivery, and bacteria inhibition, and compares them to the traditionally nonaligned, randomly oriented nanotubes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Da-Chi Yang, Richard J. J. Castellano, Ricardo Prada Silvy, Sathish K. K. Lageshetty, Robert F. F. Praino, Francesco Fornasiero, Jerry W. W. Shan
Summary: This study reports on the first macroscopic membranes with vertically oriented, subnanometer carbon nanotube (CNT) pores, which show enhanced water flow. The membranes, made using a scalable, solution-based method, exhibit fast pressure-driven water transport with up to 10^5-fold enhancement compared to conventional flow. The results also show that the hydrodynamic slip lengths increase with decreasing nanotube diameter, suggesting that water transport in small-diameter CNTs is dominated by entrance resistance.
Article
Nanoscience & Nanotechnology
Gongdong Wang, Mingyang Zheng, Zhendong Liu, Meng Wang
Summary: A flexible piezoresistive sensor with high anisotropy has been developed using internal vertically aligned carbon nanotubes and an external microdome structure. The sensor exhibits increased sensitivity in the pressure direction due to the synergistic effect of the carbon nanotubes and microdome structure. It has potential applications in areas such as human health monitoring, wearable electronics, and intelligent human-computer interaction.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
A. Andalouci, Y. Roussigne, L. Gangloff, P. Legagneux, S. Farhat, S. M. Cherif
Summary: In this study, vertically aligned multiwalled carbon nanotubes (MWCNTs) filled with Co magnetic nanowires were synthesized in a one-step process using bias-assisted plasma enhanced chemical vapor deposition (PECVD) method. The growth, alignment, and filling of the carbon nanotubes were achieved simultaneously by applying a negative bias to the substrate. The structural investigations revealed the growth mechanisms, and the analysis confirmed the presence of Co, Pd, C, N, and O in the nanotubes. The hysteresis cycles exhibited ferromagnetic behavior, with higher coercive field values observed for nail-shaped Co nanoparticles embedded in the CNTs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Physical
Corentin Querne, Thomas Vignal, Mathieu Pinault, Philippe Banet, Martine Mayne-Hermite, Pierre -Henri Aubert
Summary: This paper studies the influence of high density vertically aligned carbon nanotubes (VACNT) grown on different grades of aluminum collectors on electrochemical performances. VACNT electrodes exhibit high areal capacitance and average gravimetric capacitance, which are related to the thickness and volumetric density of the nanotubes. Symmetrical supercapacitor based on VACNT/Al electrodes assembled in coin-cell shows high energy and power density with high potential difference and great energy retention capacity.
JOURNAL OF POWER SOURCES
(2023)
Article
Materials Science, Multidisciplinary
Octavian-Gabriel Simionescu, Oana Brincoveanu, Cosmin Romanitan, Silviu Vulpe, Andrei Avram
Summary: In this study, the growth process of self-sustained vertically aligned carbon nanotubes (VA-CNTs) is comprehensively investigated. The deposition of supporting and catalyst layers, as well as the CNT growth, are analyzed using different techniques, such as X-ray diffraction, X-ray reflectivity, and scanning electron microscopy. The crystalline structure, density, thickness, roughness, and morphology of different layers, including the titanium nitride supporting layer, nickel layers, and CNTs, are studied.
Article
Chemistry, Multidisciplinary
Chaminda P. Nawarathne, Abdul Hoque, Chethani K. Ruhunage, Connor E. Rahm, Noe T. Alvarez
Summary: This study presents a method for achieving chemical bonding of CNTs to metal substrates at low temperatures, bypassing the need for high temperature treatments, and successfully establishing direct connections between CNTs and metal substrates. By functionalizing metal substrates with organic species and carefully controlling the process, successful chemical bonding between CNTs and metal substrates was achieved, opening up new possibilities for electronic applications.
APPLIED SCIENCES-BASEL
(2021)
Article
Multidisciplinary Sciences
T. P. Radhika, Satyananda Kar
Summary: This study investigates the effect of an additional floating electrode on the properties of an atmospheric pressure plasma jet with a cross-field electrode configuration. The experiments show that the presence of an additional floating electrode reduces the power required for the plasma jet to cross the nozzle and increases the jet length. The threshold power and maximum jet length depend on the width of the electrode. The analysis also reveals an improvement in the reactivity of the plasma plume due to the increased optical emission intensity and relative yield of ions in the presence of the additional floating electrode.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Emeline Charon, Mathieu Pinault, Martine Mayne-L'Hermite, Cecile Reynaud
Summary: The one-step aerosol-assisted catalytic chemical vapor deposition (CCVD) process, operated in a H-2-based carrier gas, can efficiently prepare forests of vertically aligned multiwalled carbon nanotubes (VACNTs) with high purity and good crystalline level at extremely low ferrocene content. The iron content in the VACNT sample is proportional to the ferrocene concentration in the precursor, while reducing the ferrocene concentration leads to a decrease in VACNT number density and an increase in growth rate with similar CNT diameters and crystalline structure, indicating high oxidation resistance.
Article
Chemistry, Physical
Karlheinz Strobl, Fahd Rajab
Summary: Long-lasting, self-supporting, superhydrophobic carbon nanotube structures have been developed for fluid processing devices requiring gas transfer.
SURFACES AND INTERFACES
(2022)
Review
Chemistry, Physical
Giuseppe Prestopino, Andrea Orsini, Daniele Barettin, Giuseppe Arrabito, Bruno Pignataro, Pier Gianni Medaglia
Summary: The synthesis of crystals with a high surface-to-volume ratio is crucial for advanced electronic devices and sensors. Vertical nanowires aligned with the substrate surface are the easiest way to achieve this. Wet chemistry methods for growing aligned nanowires and functionalizing their surfaces with quantum dots have been studied, and the best results in terms of photoconversion efficiencies have been obtained through slow multi-step local drop casting. Among the materials used, ZnO shows the most promise due to its piezo-phototronic effects.
Article
Chemistry, Physical
Gan Sun, Hao Ren, Zhongting Shi, Lu Zhang, Zhuo Wang, Ke Zhan, Ya Yan, Junhe Yang, Bin Zhao
Summary: A composite electrode with a unique three-dimensional hierarchical nanostructure of V2O5/VACNTs was successfully prepared and applied in aqueous ASCs, showing ideal specific capacitance and outstanding cycling stability.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Nanoscience & Nanotechnology
Christian Ruettiger, Hanna Huebner, Sebastian Schoettner, Tamara Winter, Gennady Cherkashinin, Bjoern Kuttich, Bernd Stuehn, Markus Gallei
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Nanoscience & Nanotechnology
Jan Krausmann, Shawn Sanctis, Joerg Engstler, Martina Luysberg, Michael Bruns, Joerg J. Schneider
ACS APPLIED MATERIALS & INTERFACES
(2018)
Article
Chemistry, Inorganic & Nuclear
Tobias Wombacher, Richard Goddard, Christian W. Lehmann, Joerg J. Schneider
DALTON TRANSACTIONS
(2018)
Article
Chemistry, Inorganic & Nuclear
Tim Herdt, Michael Bruns, Joerg J. Schneider
DALTON TRANSACTIONS
(2018)
Article
Nanoscience & Nanotechnology
Deepu J. Babu, Divya Puthusseri, Frank G. Kuehl, Sherif Okeil, Michael Bruns, Manfred Hampe, Joerg J. Schneider
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2018)
Article
Engineering, Biomedical
Petia Atanasova, Rudolf C. Hoffmann, Nina Stitz, Shawn Sanctis, Zaklina Burghard, Joachim Bill, Joerg J. Schneider, Sabine Eiben
BIOINSPIRED BIOMIMETIC AND NANOBIOMATERIALS
(2019)
Article
Chemistry, Physical
Gennady Cherkashinin, Jona Schuch, Bernhard Kaiser, Lambert Alff, Wolfram Jaegermann
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2020)
Article
Chemistry, Multidisciplinary
Gennady Cherkashinin, Zhihang Yu, Robert Eilhardt, Lambert Alff, Wolfram Jaegermann
ADVANCED MATERIALS INTERFACES
(2020)
Article
Nanoscience & Nanotechnology
Gennady Cherkashinin, Robert Eilhardt, Silvia Nappini, Matteo Cococcioni, Igor Pis, Simone dal Zilio, Federica Bondino, Nicola Marzari, Elena Magnano, Lambert Alff
Summary: The study demonstrated that the 5V LiCoPO4-LiCo2P3O10 thin-film cathode material coated with MOO layer exhibits high stability and does not undergo chemical reactions with the liquid electrolyte. Additionally, external electrolyte oxidation and internal electrolyte oxidation are the mechanisms leading to chemical reactions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Mikhail Pashchanka, Gennady Cherkashinin
Summary: This research proposes a new method of optical blackening by deliberately randomizing the nanopore arrangement in porous anodic alumina. The black coloration mechanism is based on destructive interference of light after multiple scattering, rather than chemical composition. These new 2D materials show strong adhesion, cost-effectiveness, and potential applications in aerospace technologies, biological filtration, and fluorescence imaging.
Article
Materials Science, Multidisciplinary
Jing Lin, Gennady Cherkashinin, Mareen Schaefer, Georgian Melinte, Sylvio Indris, Aleksandr Kondrakov, Juergen Janek, Torsten Brezesinski, Florian Strauss
Summary: This study explores the impact of increasing the configurational entropy of the Li6+aP1-xMxS5I solid electrolyte system on its structure-conductivity/stability relationships. The findings demonstrate that multicationic substitution can significantly improve Li diffusion and ionic conductivity, but interfacial side reactions with other materials need to be addressed for practical applications.
ACS MATERIALS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Taylor D. Sparks, Aleksander Gurlo, Maged F. Bekheet, Michael W. Gaultois, Gennady Cherkashinin, Laetitia Laversenne, David R. Clarke
Article
Materials Science, Multidisciplinary
Nico Koslowski, Shawn Sanctis, Rudolf C. Hoffmann, Michael Bruns, Joerg J. Schneider
JOURNAL OF MATERIALS CHEMISTRY C
(2019)
Article
Chemistry, Multidisciplinary
Tim Herdt, Daniel Deckenbach, Michael Bruns, Joerg J. Schneider
Article
Electrochemistry
Gennady Cherkashinin, Rene Hausbrand, Wolfram Jaegermann
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2019)