Article
Chemistry, Multidisciplinary
Yanyan Zhang, Zhi Xing, Baojin Fan, Zhigang Ni, Fuyi Wang, Xiaotian Hu, Yiwang Chen
Summary: This study molecularly explored the chemistry of perovskite precursor solutions for the first time using in situ liquid time-of-flight secondary ion mass spectrometry. It identified that methylammonium, formamidinium cations, and I- anion are the drivers of aging chemistry. The introduction of Lewis bases triethyl phosphate and ethyl ethanesulfonate as additives protected the reactive cations from aging through weak interactions, with triethyl phosphate showing better long-term solution stability. The perovskite solar cell derived from a fresh triethyl phosphate-doped solution retained 92.23% of the conversion efficiency after 21 days of aging, achieving a high power conversion efficiency of 23.06%.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Physics, Applied
A. A. Murthy, J. Lee, C. Kopas, M. J. Reagor, A. P. McFadden, D. P. Pappas, M. Checchin, A. Grassellino, A. Romanenko
Summary: This study investigates the impacts of fabrication procedures on the dissipation mechanisms in superconducting qubits using time-of-flight secondary ion mass spectrometry. The results show that the formation of oxide and silicide regions and the incorporation of impurity species, such as niobium hydrides and carbides, affect the superconducting properties of the Nb thin film. It also reveals the presence of halogen species in the patterned thin films. Understanding the source of these impurities can contribute to intelligent fabrication of superconducting qubits and prolong coherence times.
APPLIED PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
A. Franquet, V. Spampinato, S. Kayser, W. Vandervorst, P. van der Heide
Summary: Shrinking semiconductor device dimensions require new methods and technologies for materials characterization. SF-SIMS and OrbitrapTM-SIMS methods have been demonstrated to accurately quantify impurities in small structures.
Article
Nanoscience & Nanotechnology
Sofia Marchesini, Benjamen P. Reed, Helen Jones, Lidija Matjacic, Timothy E. Rosser, Yundong Zhou, Barry Brennan, Mariavitalia Tiddia, Rhodri Jervis, Melanie. J. Loveridge, Rinaldo Raccichini, Juyeon Park, Andrew J. Wain, Gareth Hinds, Ian S. Gilmore, Alexander G. Shard, Andrew J. Pollard
Summary: This article discusses the measurement challenges that affect surface analysis techniques used for Li-ion battery degradation studies and provides recommendations for improving reproducibility and reducing uncertainty. The article highlights key measurement issues that need to be addressed.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Sofia Marchesini, Benjamen P. Reed, Helen Jones, Lidija Matjacic, Timothy E. Rosser, Yundong Zhou, Barry Brennan, Mariavitalia Tiddia, Rhodri Jervis, Melanie. J. Loveridge, Rinaldo Raccichini, Juyeon Park, Andrew J. Wain, Gareth Hinds, Ian S. Gilmore, Alexander G. Shard, Andrew J. Pollard
Summary: Understanding and mitigating the degradation mechanisms in lithium-ion batteries is crucial for improving their performance and lifespan. Surface analysis techniques are commonly employed to study the changes in chemistry and structure at reactive interfaces, but the complexity of battery electrodes and lack of standard measurement protocols can result in unreliable data. This paper discusses the measurement challenges of several key surface analysis techniques and provides recommendations to improve reproducibility and reduce uncertainty in the analysis of lithium-ion battery electrodes.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Environmental Sciences
Antoine Aynard, Cecile Courreges, Javier Jimenez-Lamana, Anassya Raad, Christelle Miqueu, Bruno Grassl, Stephanie Reynaud
Summary: The mass and volume concentration of nanoplastics are low, but their surface area is high, which can increase their toxicity by adsorbing chemical co-pollutants such as trace metals. This study investigated the interactions between carboxylated nanoplastics and copper, and confirmed that nanoplastics can act as carriers for metal pollutants through both adsorption and absorption processes.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Yiren Li, Jian Liu, Yiheng Wang, Xianjin Tang, Jianming Xu, Xingmei Liu
Summary: Cadmium (Cd) and lead (Pb) are common elements in contaminated sites and their behavior in the soil can be influenced by competition for adsorption sites. This study used adsorption experiments, multi-surface models, and advanced spectroscopy technology to explain the adsorption mechanisms of Cd and Pb and determine the contribution of each component in the competitive system. The results showed that pH is a key factor influencing the adsorption contribution of soil components, with soil organic matter being the dominant adsorbent for both Cd and Pb. Clay minerals play a role at low pH, while Fe/Al oxides primarily adsorb metals at high pH. Additionally, the competitive effect of Pb on Cd was mainly observed on soil organic matter rather than clay minerals, emphasizing the importance of considering this competition in soils with high organic matter content.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Katarzyna Gajos, Andrzej Budkowski, Panagiota Petrou, Sotirios Kakabakos
Summary: The biosensor interface is crucial for biosensing devices and point-of-need platforms. Traditional biosensor response cannot differentiate between different surface modifications, while Time-of-Flight Secondary Ion Mass Spectrometry (ToF-SIMS) can provide microanalysis and chemical imaging to solve this problem. ToF-SIMS allows control over molecular orientation and conformation, and can be used to optimize biosensor surface composition and biofunctionalization protocols. It provides more accurate characterization of molecular composition and allows verification of applied protocols and optimization of assay conditions. Furthermore, ToF-SIMS imaging can be used to study biomolecules printed into microarrays, biosensor arrays or separate biosensor components on a chip. It is hoped that these experimental developments using ToF-SIMS analysis methods will inspire future research in understanding complex surface phenomena.
APPLIED SURFACE SCIENCE
(2022)
Review
Materials Science, Multidisciplinary
Manale Noun, Rayane Akoumeh, Imane Abbas
Summary: Mass spectrometry imaging (MSI) is a powerful technique that can reveal the spatial distribution of atomic and molecular ions on the surfaces of biological samples. MALDI-TOF and TOF-SIMS, two commonly used MSI techniques, have witnessed significant advancements in studying cells and tissue sections due to their high resolution, sensitivity, precision, and chemical specificity. This article briefly discusses the principles and sampling methods of MALDI-TOF and TOF-SIMS, while highlighting their importance as diagnostic tools and robust analytical techniques in the medicinal, pharmaceutical, and toxicology fields through representative published studies.
MICROSCOPY AND MICROANALYSIS
(2022)
Article
Chemistry, Analytical
Yusheng Lang, Lilin Zhou, Yutaka Imamura
Summary: Time-of-flight secondary ion mass spectrometry (ToF-SIMS) is an important analysis technique for gathering information from surfaces. This study proposed a new approach that treats ToF-SIMS spectra as images and uses convolutional neural network (CNN) for analysis, avoiding the challenges of descriptor generation.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Wil Gardner, David A. Winkler, Suzanne M. Cutts, Steven A. Torney, Geoffrey A. Pietersz, Benjamin W. Muir, Paul J. Pigram
Summary: Feature extraction algorithms are important for reducing data dimensionality, but most methods do not consider spatial information. This study introduces a convolutional autoencoder algorithm that can be applied to hyperspectral ToF-SIMS imaging and achieves better results.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Analytical
Wil Gardner, David A. Winkler, Suzanne M. Cutts, Steven A. Torney, Geoffrey A. Pietersz, Benjamin W. Muir, Paul J. Pigram
Summary: Feature extraction algorithms are important for reducing data dimensionality, but most methods do not consider spatial information. This study introduces a convolutional autoencoder (CNNAE) specifically designed for hyperspectral ToF-SIMS imaging data, which incorporates pixel neighborhood information through convolutional layers. Compared to other methods, the CNNAE produces features with higher contrast and autocorrelation, accurately representing histologically recognizable features in the data. Additionally, the extension of CNNAE to 3D ToF-SIMS images provides a proof of principle for analyzing more complex 3D datasets.
ANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Mechanical
Febin Cyriac, Tee Xin Yi, Sendhil K. Poornachary, Pui Shan Chow
Summary: This study investigated the tribological performance of an organic friction modifier, an anti-wear additive, and their combination at high temperatures using a ball-on-disc tribometer. The results showed that GMO reduced friction at low-speed sliding-rolling contact and maintained enhanced frictional performance at high temperatures. The presence of ZDDP increased friction, but the addition of a friction modifier reduced friction, especially in the boundary lubrication regime.
TRIBOLOGY INTERNATIONAL
(2021)
Article
Materials Science, Multidisciplinary
Olga S. Ovchinnikova, Nikolay Borodinov, Artem A. Trofimov, Steven T. King, Matthias Lorenz, William Lamberti, David Abmayr, Anton Ievlev
Summary: Chemical imaging of polymers and polymer blends has traditionally been done using ToF-SIMS with limited spatial resolution, but recent work has focused on using HIM-SIMS for higher resolution. By utilizing HIM-SIMS, differentiation between PE and PP as well as imaging of phase-separated domains within PE has been achieved, demonstrating its potential for analyzing complex polymeric systems.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Physical
Hye Hyun Yu, Youngseo Lee, Yun-Sik Nam, Man-Ho Kim, Kang-Bong Lee, Yeonhee Lee
Summary: In this study, physical measurements and chemical analysis were used to investigate the properties and chemical composition of fermented wheat and rice starch. The results showed that fermented starch had better antiseptic properties and smaller particle size.
Article
Biochemistry & Molecular Biology
Ibrahim Kaya, Eva Jennische, Johan Dunevall, Stefan Lange, Andrew G. Ewing, Per Malmberg, Ahmet Tarik Baykal, John S. Fletcher
ACS CHEMICAL NEUROSCIENCE
(2020)
Article
Biochemistry & Molecular Biology
Mai Hoang Philipsen, Nhu T. N. Phan, John Stephen Fletcher, Andrew G. Ewing
ACS CHEMICAL NEUROSCIENCE
(2020)
Article
Energy & Fuels
Yimin Chen, Changan Xu, Seetharaman Vaidyanathan
Article
Spectroscopy
C. Esther Elizabeth Grace, P. Kiruthika Lakshmi, S. Meenakshi, Seetharaman Vaidyanathan, S. Srisudha, M. Briget Mary
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2020)
Review
Biotechnology & Applied Microbiology
Thomas Butler, Rahul Vijay Kapoore, Seetharaman Vaidyanathan
TRENDS IN BIOTECHNOLOGY
(2020)
Article
Chemistry, Analytical
Sanna Samfors, John S. Fletcher
ANNUAL REVIEW OF ANALYTICAL CHEMISTRY, VOL 13
(2020)
Review
Biology
Deepak Sethi, Thomas O. Butler, Faqih Shuhaili, Seetharaman Vaidyanathan
Article
Biophysics
Kelly Dimovska Nilsson, Noora Neittaanmaki, Oscar Zaar, Tina B. Angerer, John Paoli, John S. Fletcher
Article
Chemistry, Physical
Kelly Dimovska Nilsson, Johan Granden, Anne Farewell, John S. Fletcher
Summary: ToF-SIMS was used to analyze the chemical changes in the bacterial envelope of a fabF knock-out Escherichia coli strain. The results showed a substantial depletion of FA(18:1) in the fabF mutant during logarithmic growth, as well as a reduction in FA(cp19:0) during stationary phase. Additionally, the wild type strain exhibited a reduction in cyclopropanation at lower culture temperatures and a 'thickening' of the lipid A layer on the surface of the bacteria during stationary phase.
SURFACE AND INTERFACE ANALYSIS
(2021)
Review
Biotechnology & Applied Microbiology
Rahul Vijay Kapoore, Gloria Padmaperuma, Supattra Maneein, Seetharaman Vaidyanathan
Summary: The application of microbial co-cultures is significant in various fields such as biotechnology, ecology, and medicine. Developing methods to mimic natural environments and maximize information content in interactions are major challenges in this area. It is important to validate experimental results using different co-culture approaches to account for variations in interactions that may arise from different culturing methods.
CRITICAL REVIEWS IN BIOTECHNOLOGY
(2022)
Article
Multidisciplinary Sciences
Stephen P. Slocombe, Maria Huete-Ortega, Rahul Vijay Kapoore, Katarzyna Okurowska, Alison Mair, John G. Day, Michele S. Stanley, Seetharaman Vaidyanathan
Summary: This study analyzed the oil production of two marine algae under different cultivation conditions, finding that N. oceanica is more sensitive to N/P variations and better suited for continuous oil production, while C. vulgaris tends to induce carbohydrates at higher oil starvation thresholds, impeding oil production.
Article
Multidisciplinary Sciences
H. Hadiyanto, Adian Khoironi, Inggar Dianratri, Suherman Suherman, Fuad Muhammad, Seetharaman Vaidyanathan
Summary: This study found that the growth rate of Spirulina sp significantly decreased under treatment with microplastics (PE and PP), resulting in lower phycocyanin yield and protein content. Scanning electron microscopy and Fourier transform infrared spectroscopy analysis revealed surface damage to Spirulina sp cells and loss of carboxyl groups from proteins in Spirulina sp due to PE and PP treatment.
Article
Chemistry, Multidisciplinary
Inci Barut, Xiulan He, Erol Sener, Sanna Samfors, Andrew G. Ewing, John S. Fletcher
Summary: The abnormal functioning of proteasome is associated with crucial pathological conditions, such as neurodegeneration. However, the complex underlying causes at the cellular level are still unclear, and there are conflicting reports on the neuroprotective and neurodegenerative effects of proteasomal inhibitors like lactacystin, which are used as models for neurodegenerative diseases. The conflicting results may be due to different doses of lactacystin. Hence, a dose-dependent study was conducted to investigate the effects of lactacystin on cell membrane lipid profile and exocytosis dynamics.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Analytical
Dougal Ferguson, Alex Henderson, Elizabeth F. McInnes, Rob Lind, Jan Wildenhain, Peter Gardner
Summary: This article reviews the potential of using infrared microscopy techniques, such as FTIR and QCL, for the detection and classification of cancerous tissues. It also suggests using the F1-Score as a quantitative metric to compare model performances. Furthermore, the article provides suggestions for data handling techniques and reporting standards for future studies.
Article
Chemistry, Analytical
Jiayi Tang, Alex Henderson, Peter Gardner
Summary: The use of infrared spectroscopy in histopathology shows promise for diagnosing various diseases. Comparing the performance of AdaBoost and Random Forests algorithms on non-uniform data sets, it was found that both algorithms demonstrated excellent classification accuracy on breast cancer tissue samples, with AdaBoost showing more robustness in handling imbalanced datasets. This study provides insights into the choice of machine learning approach for building models in histopathology.
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)
