Article
Chemistry, Physical
Allegra Comba, Andrea Baldi, Riccardo Michelotto Tempesta, Massimo Carossa, Letizia Perrone, Carlo Massimo Saratti, Giovanni Tommaso Rocca, Rossella Femiano, Felice Femiano, Nicola Scotti
Summary: The study compared the effectiveness of chemical bonding techniques on zirconia and luting cement. The results showed that 10-MDP-based bonding systems did not show significant improvement in initial bond strength compared to tribochemical treatment. Additionally, all tested chemical bonding techniques were influenced by thermocycling.
Article
Materials Science, Multidisciplinary
Alessandro Brito Thomaz, Carlos Nelson Elias, Heraldo Elias Salomao dos Santos, Celso Renato de Souza Resende, Claudinei dos Santos
Summary: This study proposes an innovative method of zirconia surface painting using epoxy powder paint with antibacterial and antifungal properties to improve the adhesion to dentin. The results showed that the painted zirconia had higher bonding strength compared to untreated or acid etched surfaces. The methodology of zirconia painting with epoxy powder paint facilitates the manufacturing of dental prostheses and increases the shear bonding strength to dentin.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Review
Engineering, Biomedical
Kai Tang, Meng-Lin Luo, Wei Zhou, Li-Na Niu, Ji-Hua Chen, Fu Wang
Summary: Stable soft tissue integration is crucial for long-term implant stability, preventing peri-implantitis, and protecting underlying bone tissue. Zirconia abutments are preferred over titanium for aesthetic restoration, but achieving soft tissue attachment remains challenging. This review discusses advances in zirconia surface treatment and structural design that can enhance soft tissue integration.
BIOACTIVE MATERIALS
(2023)
Article
Chemistry, Applied
Clement Dezanet, Diana Dragoe, Philippe Marie, Nesrine Harfouche, Sandrine Froissart, Arnaud Fouchet, Jacques Rouden, Jerome Lecourt, Christelle Harnois, Pascal Thebault, Jerome Baudoux, Benedicte Lepoittevin
Summary: In this study, zirconia surfaces were functionalized by polymer grafting using a simple and successful two-step procedure. The efficiency of the two steps, initiator grafting and photopolymerization, was evaluated using various analytical techniques. The results demonstrated the possibility of controlling the surface hydrophilicity and hydrophobicity by grafting-from polymerizations.
PROGRESS IN ORGANIC COATINGS
(2022)
Review
Materials Science, Multidisciplinary
Yajuan Liu, Muqing Chen, Shangfeng Yang
Summary: Black phosphorus (BP) as an emerging two-dimensional material has wide applications in various fields, but its ambient stability needs to be enhanced due to oxidation. Chemical functionalization is an effective method for improving the stability of few-layer BP, with covalent and noncovalent functionalization being key approaches. This review provides a comprehensive overview of the chemical functionalization of BP, highlighting the impact on electronic properties and ambient stability, and discussing future challenges and developments.
Article
Chemistry, Multidisciplinary
Yan Miao, Mengda Xu, Lidong Zhang
Summary: Hydrogels have shown great potential in biomedical and engineering applications. An electrochemistry functionalization strategy has been developed to improve the mechanical strength and interfacial adhesion energy of hydrogels, enhancing their functionality and healing efficiency. This approach provides a general method for rapid generation of multifunctional hydrogels for biomedical and engineering developments.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Kenta Iizuka, Hiroki Takezawa, Makoto Fujita
Summary: This study found that complete confinement of a symmetric molecule within a coordination cage can desymmetrize the guest conformation, enabling site-selective activation or protection of otherwise equivalent reaction sites. Multistep, one-cage reactions also showed the transformation of an AAAA-type calix-[4]-arene into a lower symmetry ABAC-type one.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Suriyakul Wongsue, Ornnicha Thanatvarakorn, Taweesak Prasansuttiporn, Piyarat Nimmanpipug, Thanapat Sastraruji, Keiichi Hosaka, Richard M. Foxton, Masatoshi Nakajima
Summary: This study investigated the effect of zirconia surface topography and its wettability after surface pretreatments on the microshear bond strength of a resin cement. The results showed that nanoscale surface irregularity was the most significant factor, while surface roughness and wettability also had an impact on the bond strength.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Gaelle Desante, Norina Labude, Stephan Ruetten, Simon Roemer, Robert Kaufmann, Rafal Zybala, Joanna Jagiello, Ludwika Lipinska, Adrian Chlanda, Rainer Telle, Sabine Neuss, Karolina Schickle
Summary: This study successfully incorporated graphene oxide (GO) into bioinert zirconia implants, forming a stable GO film using dip-coating technique. The immobilized GO film showed enhanced cytocompatibility and osteogenic properties, opening new possibilities for functionalizing ceramic implants.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Sasikumar Rahul, Miriam C. Rodriguez C. Gonzalez, Shingo Hirose, Hiromasa Kaneko, Kazukuni Tahara, Kunal S. Mali, Steven De Feyter
Summary: Chemical patterning surfaces have significant value in various fields such as electronics, catalysis, sensing, and photonics. We propose a new strategy for chemical patterning of graphite using a combination of covalent and non-covalent methods. By modifying the design of the template alkane and using alkane with alkoxy terminal groups, better pattern transfer fidelity can be achieved. We also introduce the use of chronoamperometry (CA) instead of cyclic voltammetry (CV) for functionalization, enabling the formation of patterns at different length scales.
Article
Materials Science, Multidisciplinary
Zhuohan Li, Izabela Szlufarska
Summary: Materials can experience creep and time evolution even without plasticity, diffusion, or viscoelasticity. This creep is caused by the formation of adhesive chemical bonds, resulting in an increase in contact area and shear strength, and affecting the aging process of frictional contacts.
ACS MATERIALS LETTERS
(2022)
Article
Chemistry, Physical
Shuichi Toyouchi, Mathias Wolf, Guilin Feng, Yasuhiko Fujita, Beatrice Fortuni, Tomoko Inose, Kenji Hirai, Steven De Feyter, Hiroshi Uji-I
Summary: We present a facile all-optical method for spatially resolved and reversible chemical modification of a graphene monolayer. By using a tightly focused laser under water, sp(3)-type chemical defects can be introduced by photo-oxidation, and then reversibly restored to sp(2) carbon centers by a higher intensity laser through photoreduction induced by local heating. These optical methods, combined with laser direct writing technique, allow photowriting and erasing of well-defined chemical patterns on graphene with a spatial resolution of about 300 nm. The pattern can be visualized and optically read out by Raman mapping with the same excitation laser. We demonstrate the all-optical Write/Read-out/Erase of chemical functionalization patterns on graphene simply by adjusting the one-color laser intensity. This all-optical method enables flexible and efficient tailoring of physicochemical properties at the nanoscale for future applications.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Engineering, Biomedical
Simone Goncalves Moretto, Patricia Moreira de Freitas, Hector Eduardo Cepeda Inca, Paulo Francisco Cesar, Marina Stella Bello-Silva, Carlos de Paula Eduardo
Summary: Er:YAG laser treatment can effectively increase the bond strength of glass-infiltrated alumina-based zirconia-reinforced ceramic without compromising its flexural strength. This innovative method provides an improved resin cement bond to the ceramic substrate.
LASERS IN MEDICAL SCIENCE
(2021)
Article
Biotechnology & Applied Microbiology
Jincheng Wu, Pei Yu, Huling Lv, Shuang Yang, Zhe Wu
Summary: The study investigated the effect of different nanostructured zirconia surface topographies on macrophage phenotypes, with blank-machined zirconia surfaces showing superior cell proliferation and adhesion. It was found that RAW264.7 cells polarized towards both inflammatory and anti-inflammatory macrophages on all nanostructured zirconia surfaces, with a higher expression of M2 macrophage phenotype on BMZ surfaces. Additionally, conditioned media from RAW264.7 culture on these surfaces inhibited cell apoptosis to human gingival fibroblasts while promoting fibroblast proliferation and secretion.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2021)
Article
Food Science & Technology
Jovana Glusac, Ayelet Fishman
Summary: This review discusses the advantages of enzymatic and chemical modifications of zein, the current and future applications of this chemistry in food processing, the protein-modifying enzymes and chemical methods used for zein functionalization, and the mechanisms of action involved in these modifications. It emphasizes that understanding the relationship between functional properties of modified zein and the degree of modification can lead to improved zein-based food products.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Environmental
Siva Varigala, Srinivas Krishnaswamy, Chandra P. Lohia, Meghan Hegarty-Craver, Sonia Grego, Michael Luettgen, Clement A. Cid
Summary: The electrolysis of blackwater is a portable and scalable technology that can reduce the need for large-scale wastewater treatment infrastructure and enable safe onsite reuse of blackwater. By using computational analysis and testing, the technology has been optimized for treating blackwater from multiple toilets, improving efficiency and convenience in densely populated urban environments.
WATER ENVIRONMENT RESEARCH
(2021)
Article
Biochemical Research Methods
Raul Vyas, Tanouir Aloui, Kathleen Horvath, Philip J. Herr, Matthew P. Kirley, Charles B. Parker, Adam D. Keil, James B. Carlson, Justin Keogh, Roger P. Sperline, M. Bonner Denton, M. Luisa Sartorelli, Brian R. Stoner, Michael E. Gehm, Jeffrey T. Glass, Jason J. Amsden
Summary: The modified design of the mass analyzer in the previous C-CAMMS instrument improves electric field uniformity, alignment, and depth-of-focus. Comparisons of reconstructed spectra show a reduction in artifacts, highlighting the improved performance enabled by the design changes.
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
(2021)
Article
Water Resources
Sarani Sasidaran, Prateek Kachoria, Antony Raj, Sudha Ramalingam, Brian R. Stoner, Katelyn L. Sellgren, Sonia Grego
Summary: This study analyzed the feasibility of using menstrual waste as feedstock for onsite incinerators and found that a significant proportion of commercially disposable pads had high moisture content, which could potentially affect thermal processing performance.
JOURNAL OF WATER SANITATION AND HYGIENE FOR DEVELOPMENT
(2021)
Article
Chemistry, Analytical
Elettra L. Piacentino, Rafael Bento Serpa, Kathleen L. Horvath, Raul Vyas, Tanouir Aloui, Charles B. Parker, James B. Carlson, Justin Keogh, Roger P. Sperline, Maria L. Sartorelli, Brian R. Stoner, Michael E. Gehm, Jeffrey T. Glass, M. Bonner Denton, Jason J. Amsden
Summary: The cycloidal mass analyzer, described in 1938 as the only mass analyzer capable of perfect ion focusing, has been largely neglected for many years. However, the recent development of suitable ion array detectors may enable the cycloidal mass analyzer to earn a respectable place in modern chemical analysis.
ANALYTICAL CHEMISTRY
(2021)
Article
Environmental Sciences
Edwina Mercer, Shane P. Usher, Ewan J. McAdam, Brian Stoner, Yadira Bajon-Fernandez
Summary: This study investigated the rheological properties of fresh and synthetic feces in comparison to aged fecal sludges, finding that fresh feces had lower shear yield stress and higher gel point solids concentration, indicating potential alterations in physico-chemical properties due to aging. Fresh and synthetic feces displayed similar shear thinning behavior, with lower shear yield stress at higher solids concentrations, suggesting that low shear pumping could reduce energy demand for feces transport. The study concluded that handling fresh feces instead of aged fecal sludges could lead to economic and environmental benefits.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Engineering, Environmental
Edwina Mercer, Shane P. Usher, Ewan J. McAdam, Brian Stoner, Yadira Bajon-Fernandez
Summary: This study investigated the dewatering characteristics of non-sewered sanitation, focusing on the compressional rheology of fresh faeces. It found that early intervention in thickening can greatly improve solid/liquid separation efficiency, leading to higher final cake solids concentrations in a shorter time frame. Compared to wastewater sludge, fresh faeces demonstrate improved dewatering properties.
Article
Environmental Sciences
Claire M. Welling, David R. Singleton, Steven B. Haase, Christian H. Browning, Brian R. Stoner, Claudia K. Gunsch, Sonia Grego
Summary: Wastewater-based surveillance for SARS-CoV-2 on college campuses can detect individual clinical COVID-19 cases at the building level. High concordance between wastewater results and clinical cases has been observed, especially in settings with high infection rates. Daily wastewater collection and using a criteria of two consecutive days of positive wastewater signals is the most predictive approach to timely early warning of COVID-19 cases at the building level.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Multidisciplinary Sciences
Sonia Grego, Claire M. Welling, Graham H. Miller, Peter F. Coggan, Katelyn L. Sellgren, Brian T. Hawkins, Geoffrey S. Ginsburg, Jose R. Ruiz, Deborah A. Fisher, Brian R. Stoner
Summary: This study presents a technology that allows individual stool specimen collection from toilet wastewater for fecal protein and molecular assay. The results demonstrate reliable specimen collection and high agreement with standard sampling for GI cancer screening and microbiome analysis. In addition, an analogue turbidity sensor is used to assess loose stools in real time for tracking diarrhea.
SCIENTIFIC REPORTS
(2022)
Article
Environmental Sciences
Prateek Kachoria, Sarani Sasidaran, Claire M. Welling, Praveen Rosario, Jin Zhou, Krishnendu Chakrabarty, Harald Grundl, Lotte Kristoferitsch, Sonia Grego
Summary: This study evaluates the application of a Urine Trap in a No-Mix Toilet and finds that user hygiene practices affect the urine separation efficiency. Data obtained from sensors can provide insights for improved deployment strategies of sanitation technologies.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Chemistry, Analytical
Tasso von Windheim, Kristin H. Gilchrist, Charles B. Parker, Stephen Hall, James B. Carlson, David Stokes, Nicholas G. Baldasaro, Charles T. Hess, Leif Scheick, Bernard Rax, Brian Stoner, Jeffrey T. Glass, Jason J. Amsden
Summary: This paper presents a fully integrated vacuum microelectronic NOR logic gate that uses microfabricated polysilicon panels with integrated carbon nanotube field emission cathodes. The gate consists of two parallel vacuum tetrodes fabricated using polysilicon Multi-User MEMS Processes. Each tetrode exhibits transistor-like performance, but with a low transconductance due to a coupling effect between the anode voltage and cathode current. The NOR logic capabilities are demonstrated by the parallel operation of the tetrodes, although the device exhibits asymmetric performance.
Article
Computer Science, Information Systems
Jin Zhou, Jackson McNabb, Nick DeCapite, Jose R. Ruiz, Deborah A. Fisher, Sonia Grego, Krishnendu Chakrabarty
Summary: This article presents a stool image analysis approach for classifying the form and color of stool using an IoT-based smart toilet. The researchers constructed a dataset of 3275 stool images, annotated by two gastroenterologists, and used convolutional neural networks and machine-learning techniques to achieve accurate classification of stool form and color. They also utilized an edge-cloud approach to optimize the balance between accuracy and latency in the classification process.
IEEE INTERNET OF THINGS JOURNAL
(2023)
Article
Engineering, Environmental
Pragadeesh Subramani, Milan Basil, Praveen Rosario, Dijin Ramachandran Jalaja, Vaishali Choudhary, Jayakumar Renganathan, Ligy Philip, Kangwoo Cho, Claire Welling, Sonia Grego, Clement Cid
Summary: The long-term performance of an anaerobic bioreactor combined with electrochemical oxidation and integrated into a self-contained public bathroom under daily use was investigated. The electrochemical treatment consistently generated a highly chlorinated and clear effluent that was negative to a fecal coliform assay. The system maintained its performance for disinfection and nitrogen removal under water recycling conditions, but the COD removal capacity was slightly reduced. The generation of toxic disinfection byproducts was also examined.
ENVIRONMENTAL SCIENCE-WATER RESEARCH & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Praveen Rosario, Thamayanthi Seenivasan, Ramya Viswash, Sudha Ramalingam, Viswa Barani, Claire M. Welling, Sonia Grego
Summary: Heat-treatment effectively inactivated coliform bacteria, but had no significant impact on the measurement of many common wastewater physico-chemical properties.
WATER SCIENCE AND TECHNOLOGY
(2023)