Article
Nanoscience & Nanotechnology
Salila Kumar Sethy, Mateusz Ficek, Kamatchi Jothiramalingam Sankaran, Sourav Sain, Anupam Ruturaj Tripathy, Shivam Gupta, Jacek Ryl, Susanta Sinha Roy, Nyan-Hwa Tai, Robert Bogdanowicz
Summary: The origin of nitrogen-incorporated boron-doped nanocrystalline diamond (NB-NCD) nanowires is systematically addressed in relation to substrate temperature in reactant gases. The morphology and properties of NB-NCD films are significantly affected by the substrate temperature, with films grown at different temperatures showing different structural characteristics. Optical emission spectroscopy studies reveal the main factors contributing to the formation of nanowire-like conducting diamond grains and graphitic phases at grain boundaries. Conductive atomic force microscopy studies show that boron doping and nitrogen incorporation play crucial roles in improving electrical conductivity and generating conducting channels in the NB-NCD films, particularly in films grown at 850 degrees Celsius.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Salila Kumar Sethy, Kamatchi Jothiramalingam Sankaran, Prasanth Gupta, Joseph Palathinkal Thomas, Ajit Dash, John V. Kennedy, Kam Tong Leung, Ken Haenen
Summary: N- and P-co-ion implantation enhances the electrical conductivity of nanocrystalline diamond films and improves the microplasma illumination characteristics of the films. N ions induce nanographitic phases, while P ions lower the resistance at the diamond-to-Si interface, promoting effective electron transport and achieving improved MI properties.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Materials Science, Ceramics
A. Bellucci, B. Pede, M. Mastellone, V. Valentini, R. Polini, D. M. Trucchi
Summary: Thin films of nanocrystalline diamond were deposited on highly doped p-type silicon substrates to evaluate the electron emission performance under concentrated sunlight. By comparing the emitted current densities using different light sources, it was found that the concentrated light source increased the emitted current up to 80 times at 600°C, demonstrating the boost on thermionic emission. At temperatures higher than 600°C, the photon-enhanced thermionic emission (PETE) mechanism started to vanish, transitioning to pure thermionic emission. The reduction of the barrier height to 0.33 eV due to the opening of quasi-Fermi levels explained the behavior of the diamond-silicon system in the PETE regime.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Applied
Xiaoqin Ma, Lichi Chen, Yaogong Wang, Wenjiang Wang, Xiaoning Zhang
Summary: This study investigates the influence of SiNWs morphology on microplasma emission performances. The results show that SiNWs prepared at a suitable etching current can provide optimal field emission properties and microplasma emission performances, which is significant for the application of SiNWs in microdischarge devices.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Review
Physics, Applied
Kamatchi Jothiramalingam Sankaran, Joji Kurian, Balakrishnan Sundaravel, I-Nan Lin, Ken Haenen
Summary: This study focuses on the enhancement of electrical conductivity and field electron emission properties of ultrananocrystalline diamond films via gold ion implantation, and the comparison of characteristics of different implanted species. Additionally, the use of a thin gold coating on silicon substrates covered by diamond films is discussed for improved emission characteristics.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Physics, Fluids & Plasmas
David Steuer, Henrik van Impel, Andrew R. Gibson, Volker Schulz-von der Gathen, Marc Boeke, Judith Golda
Summary: A new actinometry method, helium state enhanced actinometry (SEA), is proposed in this study. By measuring the emission of specific atomic states at certain wavelengths, SEA allows for the simultaneous determination of atomic oxygen density and mean electron energy. Compared to traditional actinometry methods and energy resolved actinometry (ERA), SEA offers a simplified experimental procedure and improved precision in electron energy measurement.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Analytical
Shuang Liu, Hao Shen, Chang Gao, Jin-Hui Liu, Yong-Liang Yu, Jian-Hua Wang
Summary: The study developed a new sample introduction approach to extract trace phytoavailable heavy metals from soil and accurately analyze them via in situ desorption. The method has significant implications for improving the speed and accuracy of pollution incident evaluation.
ANALYTICA CHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Mateusz Ficek, Bartlomiej Dec, Kamatchi Jothiramalingam Sankaran, Krzysztof Gajewski, Piotr Tatarczak, Igor Wlasny, Andrzej Wysmolek, Ken Haenen, Teodor Gotszalk, Robert Bogdanowicz
Summary: Superior field electron emission characteristics were achieved in edge-rich diamond-enhanced carbon nanowalls grown in a single-step chemical vapor deposition process co-doped with boron and nitrogen. The hybrid nature of sp(3)-diamond and sp(2)-graphene in these nanowalls was revealed by Raman and transmission electron microscopy studies. Ab-initio calculations supported the experimental observations of diamond-graphene hybrid structure.
ADVANCED MATERIALS INTERFACES
(2021)
Article
Physics, Fluids & Plasmas
Xiaoqin Ma, Yaogong Wang, Lichi Chen, Long Hu, Wenjiang Wang, Xiaoning Zhang, Chunliang Liu
Summary: This study investigates the improvement of discharge properties by decorating a microcavity array device with silicon nanowires (SiNWs). The experimental results show that the device decorated with SiNWs has higher total current, mean current, and decreased ignition voltage compared to the conventional device. The mechanism of microplasma property enhancement through the electric field enhancement effect at SiNWs cap and initial seed electrons emitted from SiNWs is discussed.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
A. M. Gorbachev, A. A. Vikharev, A. V. Afanasiev, A. L. Vikharev, I. V. Bandurkin, D. B. Radishev, M. N. Drozdov, S. A. Bogdanov
Summary: This study focuses on the experimental investigation of electron photoemission from phosphorus-doped nanocrystalline diamond films under the influence of laser radiation with a wavelength of 266 nm and a pulse duration of 15 ns. Homogeneous NCD films with a thickness of 50-1200 nm were grown on conductive silicon substrates using chemical vapor deposition. The phosphorus content in the films was controlled by adjusting the phosphine content in the hydrogen-methane gas mixture and the substrate temperature. The research established a relationship between the growth conditions, NCD film thickness, and the measured quantum efficiency of diamond photocathodes, revealing that heavily doped NCD films with H-terminated surface of 50 nm thickness exhibit the highest quantum efficiency of 3*10(-5).
Article
Chemistry, Multidisciplinary
Enrico Paradisi, Roberto Rosa, Giovanni Baldi, Valentina Dami, Andrea Cioni, Giada Lorenzi, Cristina Leonelli
Summary: This article introduces a new method for fast and simple synthesis of crystalline TiO2 nanoparticles with photocatalytic activity, and demonstrates the application of this method in the production of nanotitania.
Article
Optics
Nimba Oshnik, Phila Rembold, Tommaso Calarco, Simone Montangero, Elke Neu, Matthias M. Muller
Summary: Shallow nitrogen-vacancy (NV) centers are promising for high-precision sensing applications. To mitigate the negative effects of the complex environment, feedback-based quantum optimal control is applied, improving sensitivities and robustness through direct search and optimization of microwave pulses.
Article
Chemistry, Physical
Wen Zhang, Lei Guan, Bing Wang, Huiqiang Liu, Jian Wang, Xiaofan Hong, Junjie Long, Shaobo Wei, Xiao Xiong, Ying Xiong
Summary: This study presents a unique one-step microwave plasma chemical vapor deposition process to fabricate graphite/diamond composite films with high electron field emission performance. The researchers found that sharp edges, appropriate distribution density of nanosheets, and a good electron pathway from the bulk to the surface are key factors for electron field emission performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Egor Ukraintsev, Alexander Kromka, Wiebke Janssen, Ken Haenen, Daisuke Takeuchi, Petr Babor, Bohuslav Rezek
Summary: By surface treatment using electrochemically grown polypyrrole, the secondary-electron emission and photoelectron emission from boron-doped diamond are enhanced, surpassing the electron emission intensity from the hydrogen-terminated surface with negative electron affinity. This enhancement is stable for at least one month in air and persists in vacuum even after thermal annealing.
Article
Physics, Fluids & Plasmas
B. L. Zhu, S. Q. Yan, Y. Chen, X. D. Zhu
Summary: The properties of Ar plasma generated by electron beam passing through a diamond film window were investigated by experimental diagnostic and Monte Carlo simulation. It was found that the plasma light emission intensity increases with the electron beam current, while the plasma shape remains unchanged. The plasma shrinks and becomes brighter with increasing gas pressure, and its shape changes from cone-shaped to semi prolate spheroid. The electron density also increases with increasing gas pressure and electron current.
PLASMA SOURCES SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Analytical
I. S. Hosu, M. Sobaszek, M. Ficek, R. Bogdanowicz, Y. Coffinier
Summary: This study demonstrated the improved performance of carbon nanowalls (CNWs) in detecting proteins through SALDI-MS method. The CNWs showed better signal intensity and reliability in qualitative and quantitative detection of Cytochrome C and ricin B chain. The introduction of galactosamine residues on B-CNW enhanced the detection in complex media.
Article
Environmental Sciences
Malgorzata Szopiska, Jacek Ryl, Mattia Pierpaoli
Summary: In this study, the use of electrochemical oxidation with upcycled secondary waste materials (SWMs) as electrodes was demonstrated as a safer and cleaner technology to minimize the impact of pharmaceuticals in wastewaters. The design of tailored multifunctional electrode materials, derived from combustion and industrial processes, addresses the energy efficiency and potential release of toxic by-products issues. The results show that SWMs can substitute costly engineered fillers and the tailored fibrous composite electrodes have low energy consumption and absence of reaction by-products, making them good candidates for safer and cleaner technologies.
Article
Chemistry, Physical
Krystian Lankauf, Karolina Gornicka, Patryk Blaszczak, Jakub Karczewski, Jacek Ryl, Grzegorz Cempura, Marcin Zajac, Maciej Bik, Maciej Sitarz, Piotr Jasinski, Sebastian Molin
Summary: In this study, a series of MnCo2-xFexO(4) powders were synthesized by the sol-gel method to investigate the effect of partial Fe substitution on the physicochemical and electrochemical properties of MnCo2O4 spinel. The synthesized powders were characterized using various techniques. The findings revealed that the electrocatalytic activity towards oxygen evolution reaction (OER) was enhanced when Fe was partially substituted for Co, with the highest activity observed at x = 0.5. This indicates that tuning the eg occupancy at the octahedral sites through Fe substitution can modulate the catalytic activity of OER.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Mateusz Cieslik, Agata Rodak, Agnieszka Susik, Natalia Wojcik, Michal Szocinski, Jacek Ryl, Krzysztof Formela
Summary: This study investigated the multiple reprocessing of a commercially available PLA conductive composite with carbon black filler for 3D printing. The effects of extrusion temperature and reprocessing steps on the rheology, morphology, thermal, and electrochemical properties of the conductive PLA 3D-printing filament were evaluated. The results showed deterioration in thermal stability and material strength, as well as an increase in melting point after initial melting. The conduction mechanism and reversibility of the redox process were also affected by the multiple processing. Furthermore, the material fluidity was too high after multiple reprocessing, which should be considered for proper application as a 3D-printed electrode material.
Article
Chemistry, Physical
Adrian Olejnik, Karol Olbrysi, Jakub Karczewski, Jacek Ryl, Robert Bogdanowicz, Katarzyna Siuzdak
Summary: In this work, the electropolymerization of quinone-rich polydopamine (PDA) on hydrogenated TiO2 nanotubes is described, resulting in improved photoactivity in the visible spectrum. The deposition of PDA is uniform on the nanotube walls and its chemical structure depends on the pH of the supporting electrolyte. The modification of the nanotubes leads to a 20-fold increase in photocurrent response and improvement in quantum efficiency at specific wavelengths.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Gyuho Han, Hee Chan Song, Sang Hoon Kim, Jeong Young Park
Summary: The interaction between metal and support significantly enhances catalytic activity. In this study, the effect of the support's oxidation state on the metal-support interaction (MSI) in two-dimensional Pt/TiOx catalysts was investigated. Pt nanoparticles were deposited on titanium oxide supports with five different oxidation states using arc plasma deposition, and CO oxidation reaction was accurately performed in a batch reactor. It was confirmed that the catalyst with the highest oxidation state of the support exhibited the best catalytic activity. The Mars-van Krevelen mechanism at the metal-oxide interface was affected by the oxidation states of the supports, and the compositional effects of the support were confirmed by X-ray photoelectron spectroscopy analysis.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Wiktoria Lipinska, Adrian Olejnik, Monika Janik, Mateusz Brodowski, Karolina Sapiega, Mattia Pierpaoli, Katarzyna Siuzdak, Robert Bogdanowicz, Jacek Ryl
Summary: The electrodes with a periodic matrix of gold particles patterned by titanium dimples and modified by 3-mercaptopropionic acid (MPA) followed by CD147 receptor grafting were studied for specific impedimetric detection of SARS-CoV-2 viral spike proteins. The study revealed that MPA adsorption on the Au-Ti surface had preferential and stronger binding patterns with CD147, resulting in enhanced surface coverage. Control of bonding at the surface was crucial for oriented receptor assembling and boosted sensitivity. The method has been demonstrated for detecting the SARS virus and can be applied to protein-antigen systems.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Seunghwa Hong, Daeho Kim, Ki-Jeong Kim, Jeong Young Park
Summary: The metal-support interaction is crucial for determining the catalytic activity of supported metal catalysts. The facet of the support plays a role in catalytic control via constructing a well-defined metal-support nanostructure. In this study, cubic and octahedral Cu2O supports with different facets were developed, and Pt nanoparticles were introduced. The in situ characterizations revealed that the facet-dependent encapsulation of the Pt nanoparticles by a CuO layer affected the catalytic performance.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Mincheol Kang, Beomjoon Jeon, Jeong Young Park
Summary: Significant research has focused on enhancing catalytic performance through solar energy conversion. The design of photocatalysis incorporating surface plasmons is drawing considerable attention as a highly competitive catalyst system. In this study, the intrinsic relationship between surface-plasmon-driven hot electrons and catalytic activity during hydrogen oxidation was demonstrated using catalytic Schottky nanodiodes (Pt/Ag/TiO2) for antenna-reactor plasmonic photocatalysis. The results showed that the plasmonic effect amplifies the flow of reaction-induced hot electrons, leading to enhanced catalytic activity. Plasmonic photocatalytic performance can be controlled with light wavelengths, intensity, surface temperature, and structures.
Article
Chemistry, Multidisciplinary
Si Woo Lee, Heeyoung Kim, Jeong Young Park
Summary: Hot electrons are excited by energy dissipation during chemical reactions on metal catalyst surfaces, occurring at both solid-gas and solid-liquid interfaces. In this study, comparing electronic excitation at the two interfaces, it was found that the efficiency of reaction-induced excitation of hot electrons was approximately 100 times higher at the solid-liquid interface compared to the solid-gas interface. The boost in hot electron excitation in the liquid phase is attributed to the presence of an ionic layer lowering the potential barrier for electron transfer.
Article
Multidisciplinary Sciences
M. Nadolska, M. Szkoda, K. Trzcinski, J. Ryl, A. Lewkowicz, K. Sadowska, J. Smalc-Koziorowska, M. Przesniak-Welenc
Summary: Solar-driven photocatalysis using clean solar energy has great potential as a sustainable wastewater treatment technology. This study focuses on the development of NH4V4O10 (NVO) and its composite with rGO (NVO/rGO) as efficient and low-cost photocatalysts. The results show that the NVO and NVO/rGO photocatalysts have strong visible light absorption, high V4+ surface species, and a well-developed surface area, leading to excellent performance in methylene blue photodegradation. The NVO/rGO composite also shows promising results in the photoreduction of inorganic pollutants like Cr(VI).
SCIENTIFIC REPORTS
(2023)
Article
Biochemical Research Methods
Natalia Musial, Aleksandra Bogucka, Dmitry Tretiakow, Andrzej Skorek, Jacek Ryl, Paulina Czaplewska
Summary: Salivary stones, also known as sialoliths, are formed in pathological conditions in the salivary glands. The composition of sialoliths and the proteins associated with their formation have been studied using mass spectrometry and SWATH-MS analysis. Different types of sialoliths were found to contain unique proteins, and bacterial proteins were also identified. The results suggest that bacterial infections, disturbances in calcium metabolism, and neutrophil extracellular traps (NETs) may play a role in the formation of sialoliths.
CLINICAL PROTEOMICS
(2023)
Article
Chemistry, Physical
Grzegorz Stepniewski, Pascal Hanzi, Adam Filipkowski, Monika Janik, Mariusz Mrozek, Yuriy Stepanenko, Robert Bogdanowicz, Valerio Romano, Alexander Heidt, Ryszard Buczynski, Mariusz Klimczak
Summary: The integration of nanodiamonds with optical fibers has been shown to be a compelling methodology for magneto-optics. This study reveals that nanodiamonds can be utilized for nonlinear optics by manipulating the nonlinear response of glasses. The experiments demonstrate a reduction in the nonlinear refractive index of materials containing nanodiamonds, providing a guideline for future research on negative nonlinearity fibers.
Article
Chemistry, Applied
Jeong-Chul Kim, John Lee, Seung Won Han, Hongjun Park, Hanyoung Park, Jeong Young Park, Ryong Ryoo
Summary: Investigated the transformation of PtY/MZ catalyst from powder form to industrial pellets. Addition of 20 wt% of pseudo-boehmite as a binder resulted in the highest mechanical strength and catalytic activity. Demonstrated the use of other non-acidic binders.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Sujit Deshmukh, Srinivasu Kunuku, Pawel Jakobczyk, Adrian Olejnik, Chien-Hsu Chen, Huan Niu, Bing Yang, Nianjun Yang, Robert Bogdanowicz
Summary: Researchers have developed electrochemical supercapacitors with improved cycling stability and energy density by implanting manganese ions into boron-doped diamond films. These supercapacitors exhibit high capacitance and exceptional cyclic stability, showing promise for high-rate electrochemical capacitive energy storage applications.
ADVANCED FUNCTIONAL MATERIALS
(2023)
