Article
Chemistry, Multidisciplinary
Matthieu Starck, Jack D. Fradgley, Davide F. De Rosa, Andrei S. Batsanov, Maria Papa, Michael J. Taylor, Janet E. Lovett, Jacob C. Lutter, Matthew J. Allen, David Parker
Summary: A series of cationic and neutral p-Br and p-NO2 pyridine substituted Eu(III) and Gd(III) coordination complexes serve as versatile synthetic intermediates. The introduction of various substituents is made possible through nucleophilic aromatic substitution reactions, leading to the tuning of absorption and emission spectral properties in Eu(III) complexes. The p-substituent in Gd(III) complexes does not significantly affect EPR properties, making them suitable as EPR spin probes for biomolecules.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Crystallography
Katarina Ridzonova, Maksym Buryi, Vladimir Babin, David John, Jan Drahokoupil, Neda Neykova, Tatsiana Salamakha, Yauhen Tratsiak
Summary: Conjugated BaI2:Eu (5 at.%) nanocrystalline particles were synthesized and decorated with golden nanoparticles (GNP). GNP exhibited hydrophilic effect, which resulted in the formation of BaI2 · H2O phase. The luminescence intensity of Eu2+ was reduced with increasing GNP content, possibly due to the substitution of Au for Ba competing with Eu. Additionally, the decay time of luminescence was shortened with increasing GNP content, attributed to the moderation of negative charge in GNP, leading to repulsion with the excited Eu2+ electron.
Article
Materials Science, Ceramics
S. V. Kuznetsov, Yu. A. Ermakova, K. N. Boldyrev, V. S. Sedov, A. A. Alexandrov, V. V. Voronov, S. Kh. Batygov, A. D. Rezaeva, A. R. Drobysheva, N. Yu. Tabachkova
Summary: Novel scintillating and visualizing materials are crucial for the development of high-power X-ray sources. This study focuses on the formation of composite materials consisting of X-ray luminescent nanoparticles in a robust transparent matrix. Sr0.85-xBaxEu0.15F2.15 nanopowders were synthesized and the most optimal composition with the brightest luminescence response was determined.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Teng Zhang, Yuichi Kitagawa, Ryoma Moriake, Pedro Paulo Ferreira da Rosa, Md Jahidul Islam, Tomoki Yoneda, Yasuhide Inokuma, Koji Fushimi, Yasuchika Hasegawa
Summary: This study demonstrated a novel molecular design method for monochromatic and bright red luminescent Ln(III)-silica nanomaterials. Two luminescent Eu-III-silica hybrid nanoparticles showed high intrinsic luminescence quantum yield and emission lifetime, indicating the promising potential of TPPO-Si(OEt)(3) linker for developing Eu-III-based luminescent materials.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Katarzyna Szyszka, Sara Targonska, Agnieszka Lewinska, Adam Watras, Rafal J. Wiglusz
Summary: Hydroxyapatite nanopowders of Eu3+-doped, Cu2+-doped, and Eu3+/Cu2+-co-doped Ca-10(PO4)(6)(OH)(2) were prepared by a microwave-assisted hydrothermal method. The luminescence of Eu3+ ions was strongly quenched by Cu2+ ions, resulting in much shorter luminescence decay time in Eu3+/Cu2+ co-doped materials compared to Eu3+-doped materials. Multiple coordination environments for copper(II) ion were revealed by electron paramagnetic resonance (EPR) technique.
Article
Materials Science, Ceramics
I. E. Kolesnikov, R. S. Bubnova, A. Povolotskiy, Y. P. Biryukov, A. Povolotckaia, O. Yu Shorets, S. K. Filatov
Summary: This study demonstrated the luminescent properties of Ba3Lu2B6O15 phosphors doped with Eu3+ ions for the first time and reported the dependence of luminescence properties on the crystal structure. The successful isomorphic substitution of Lu3+ sites by Eu3+ ions was confirmed. Increasing Eu3+ doping concentration leads to a gradual shift in chromaticity from violet to red.
CERAMICS INTERNATIONAL
(2021)
Article
Optics
A. B. Kulinkin, S. P. Feofilov, F. Piccinelli, A. M. Srivastava, M. Bettinelli
Summary: Low temperature site selective spectroscopy was used to investigate the distribution of Eu3+ ions in ordered and disordered pyrochlores, revealing the presence of multiple non-centrosymmetric sites in the Ca-pyrochlore and a single site with inversion symmetry in the Mg-pyrochlore. Possible explanations were provided for the high energy emission transition observed in the Ca-pyrochlore.
JOURNAL OF LUMINESCENCE
(2022)
Article
Chemistry, Physical
Lais Chantelle, Brendan James Kennedy, Cybelle Pereira de Oliveira, Francis Gouttefangeas, Maximo Siu-Li, Richard Landers, Alexandra Ciorita, Arpad Mihai Rostas, Ieda Maria Garcia dos Santos, Andre Luiz Menezes de Oliveira
Summary: The antibacterial activity of Eu3+-doped SrSnO3-type materials against Staphylococcus aureus and Escherichia coli was investigated. Structural characterizations revealed that Eu3+ doping led to an increase of Sn2+ and oxygen vacancies in the SrSnO3 lattice, which played a crucial role in the antibacterial activity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Optics
Pablo Serna-Gallen, Hector Beltran-Mir, Eloisa Cordoncillo
Summary: The study explores the synthesis and characteristics of Eu3+-doped KY3F10 materials, highlighting the importance of reaction conditions in determining the final product properties. The results show significant changes in photoluminescence spectra and lifetimes, indicating potential for applications in white light-emitting diodes.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Pablo Serna-Gallen, Hector Beltran-Mir, Eloisa Cordoncillo
Summary: Eu3+-doped YF3 and KY3F10 phosphors were prepared hydrothermally in a wide range of pH values without surface chelators, using dicarboxylic acids to modulate the evolution of the surface and crystal phases in the KF-YF3 system. The materials exhibited tunable photoluminescence with high quantum efficiencies, and the relationship between optical performance and physicochemical properties was established through calculations. This study could spark interest in the materials engineering community for advanced applications in various fields such as bioanalytics, biomedics, and photonics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Electrical & Electronic
Santosh Kumar Gupta, Kathi Sudarshan, Ruma Gupta, Brindaban Modak, Amit Kumar, Pampa Modak
Summary: This study investigates the symmetrical changes in perovskite structures and their effects on the photoluminescence of Eu3+. The results show that the Ruddlesden-Popper perovskite structure is more distorted compared to the conventional perovskite structure, resulting in different emission spectra of Eu3+. Moreover, the Ruddlesden-Popper perovskite structure has higher defect and oxygen vacancy concentrations, leading to better charge transfer and capacitance performance.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Wendong Nie, Liqin Yao, Guang Chen, ShiHao Wu, Zhijian Liao, Lei Han, Xinyu Ye
Summary: The newly developed LCMS:0.05Cr(3+) phosphor exhibits broadband emission, good thermal stability, and high internal quantum efficiency. It shows excellent photoelectric performance on NIR pc-LED and can serve as a light source for plant cultivation with promising applications in the agriculture field.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Physical
S. Mahalakshmi, Jeyanthinath Mayandi, Suresh Sagadevan, V Ragavendran, K. Manikandan, S. Arumugam, J. M. Pearce, Vishnukanthan Venkatachalapathy
Summary: This study synthesizes barium titanate (BaTiO3) nanoparticles using a low-cost sol-gel hydrothermal method at different temperatures and investigates their second harmonic generation (SHG) effects. The crystal structure of BaTiO3 changes from simple cubic to rhombohedral, resulting in structural distortion and phase transition. The variation in particle size and magnetic properties leads to an improved SHG conversion efficiency. This technique shows promise for fabricating bio-compatible imaging probes and coherent bio-markers in medicine and electronics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Composites
Mengchao Shang, Jingjing Zhang, Zhou Zhou, Fei Shi, Zhiqiang Wang
Summary: In this study, rare earth Europium (Eu3+) complexes were successfully grafted onto carbon fibers, imparting them with fluorescence characteristics. The Eu-complex grafted carbon fibers (CEuCF) exhibited sharp red emission attributed to the 5D0-*7F1 and 5D0-*7F2 transitions of Eu3+. The surface roughness of the carbon fibers changed after the introduction of fluorescence properties. The fluorescence intensity of the carbon fibers increased initially and then decreased with increasing Eu content, reaching its peak at a molar ratio of 2 mmol. The energy transfer in the CEuCF was also discussed in detail. Enduing carbon fibers with luminescent properties could expand their application areas.
COMPOSITES COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Iresha D. Herath, Colum Breen, Sarah H. Hewitt, Thomas R. Berki, Ahmad F. Kassir, Charlotte Dodson, Martyna Judd, Shereen Jabar, Nicholas Cox, Gottfried Otting, Stephen J. Butler
Summary: The study introduces a new stable chiral Ln(III) tag, known as C12, for site-specific attachment to proteins, enabling protein probing through various spectroscopic techniques. The C12 tag exhibits enhanced reactivity towards selenocysteine, offering a pathway for selectively tagging selenocysteine in proteins containing cysteine residues. With Tb-III or Tm-III ions, the C12 tag can generate pseudocontact shifts in protein NMR spectra, providing a rigid tether between lanthanide and protein for interpretation of the shifts and distance measurements in double electron-electron resonance experiments. Additionally, the Tb-III complex upon reaction with cysteine or thiol compounds shows a significant enhancement in luminescence quantum yield, making it a sensitive luminescence probe for time-resolved FRET assays and enzyme reaction monitoring.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Michael J. Ford, Dinesh K. Patel, Chengfeng Pan, Sarah Bergbreiter, Carmel Majidi
ADVANCED MATERIALS
(2020)
Article
Engineering, Electrical & Electronic
Mahnoush Babaei, Sukjun Kim, Camilo Velez, Dinesh K. Patel, Sarah Bergbreiter
JOURNAL OF MICROELECTROMECHANICAL SYSTEMS
(2020)
Article
Chemistry, Physical
Dinesh K. Patel, K. G. Girija, Boddu S. Naidu, B. Vishwanadh, Farheen N. Sayed, R. K. Vatsa, V. Sudarsan, S. K. Kulshreshtha
Summary: The influence of In3+ doping on the structural and luminescence properties of ZnGa2O4 nanoparticles was investigated. Different Ga3+ structural units were identified, leading to tuning of emission wavelength from the nanoparticles upon UV excitation. Alternating current powder electroluminescence was demonstrated for both undoped and In3+ doped ZnGa2O4 nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Multidisciplinary
Mason Zadan, Dinesh K. Patel, Andrew P. Sabelhaus, Jiahe Liao, Anthony Wertz, Lining Yao, Carmel Majidi
Summary: Liquid crystal elastomers (LCEs) are combined with soft, stretchable thermoelectrics to create electrically controlled actuators, active cooling, and thermal-to-electrical energy conversion. This innovative combination allows for closed-loop control, walking towards a heat source, and autonomous deflection in soft systems, increasing energy recuperation efficiency.
ADVANCED MATERIALS
(2022)
Article
Robotics
Zach J. Patterson, Dinesh K. Patel, Sarah Bergbreiter, Lining Yao, Carmel Majidi
Summary: Soft robots, made of elastically deformable and compliant materials, have the potential to change shape and adapt to their environment, providing advantages over traditional robotics. In this study, we present a streamlined workflow using digital light processing (DLP) 3D printing to create field-deployable soft robots. The soft robots are capable of walking underwater at speeds comparable to their biological analog and can perform untethered locomotion in a natural aquatic environment.
Article
Nanoscience & Nanotechnology
Phillip Won, Connor S. Valentine, Mason Zadan, Chengfeng Pan, Michael Vinciguerra, Dinesh K. Patel, Seung Hwan Ko, Lynn M. Walker, Carmel Majidi
Summary: LMEEs are composed of soft polymer matrix embedded with liquid metal alloys. A new approach for direct ink write printing of printable LMEE ink is introduced, enabling creation of three-dimensional shapes with various designs. LMEE exhibits exceptional electrical, elastic, and thermal properties suitable for flexible electronics, soft robotics, and thermal management applications.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Dinesh K. K. Patel, Xiaonan Huang, Yichi Luo, Mrunmayi Mungekar, M. Khalid Jawed, Lining Yao, Carmel Majidi
Summary: This study achieves multimodal locomotion of soft robots using highly compact and dynamic bistable soft actuators. These actuators can swiftly transform between two oppositely curved states and generate a force of 0.3 N. The consistency and robustness of the actuator response are experimentally validated. The compact and fast-responding properties of the soft bistable actuator allow it to be used as an artificial muscle for shape-reconfigurable soft robots capable of multiple modes of SMA-powered locomotion.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Nanoscience & Nanotechnology
Michael R. Vinciguerra, Mahmoud Tavakoli, Carmel Majidi, Lining Yao, Dinesh K. Patel, Wuzhou Zu
Summary: This study presents a design and manufacturing methodology for combining direct ink write (DIW) 3D printing of soft, stretchable conductive inks with DIW-based 4D printing of LCE to create fully integrated, electrically responsive, shape programmable matter. The inclusion of conductive ink allows for stable power delivery to surface mount devices and Joule heating traces in a highly dynamic LCE system. This digital fabrication approach can push LCE actuators closer to becoming functional devices, such as shape programmable antennas and actuators with integrated sensing.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Danli Luo, Aditi Maheshwari, Andreea Danielescu, Jiaji Li, Yue Yang, Ye Tao, Lingyun Sun, Dinesh K. Patel, Guanyun Wang, Shu Yang, Teng Zhang, Lining Yao
Summary: Aerial seeding is an effective method for covering large and inaccessible areas, but it suffers from low germination rates due to harsh environmental conditions. Researchers have developed self-drilling seed carriers inspired by Erodium seeds, which can improve seed survival by transforming wood veneer into highly stiff and bending actuators. The system has potential applications in agriculture, environmental restoration, and other fields.
Article
Materials Science, Multidisciplinary
Dinesh K. Patel, Ke Zhong, Haiqing Xu, Mohammad F. Islam, Lining Yao
Summary: Morphing matter, which can change shapes and properties in response to external stimuli, has attracted significant interest in various fields. However, the environmental impact of morphing matter should also be considered. This study reflects and summarizes the practice of sustainability in the manufacturing, usage, and end-of-life handling of morphing matter. The concept of sustainable morphing matter (SMM) is introduced, suggesting that sustainability-conscious factors should be integrated into the design process.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Engineering, Multidisciplinary
Nolen I. Keeys, Dinesh K. Patel, Philip LeDuc, Carmel Majidi
Summary: This study demonstrates the magnetically repelled deformation of physically soft magnetic materials using an electropermanent magnet. The deformable thin film can be controlled by switching between bistable on/off states of the magnet. This work has the potential to advance the development of new magneto-responsive soft materials and systems.
ENGINEERING RESEARCH EXPRESS
(2023)
Article
Automation & Control Systems
Zefang Li, Gina Olson, Dinesh K. Patel, Lining Yao, Carmel Majidi
Summary: This article presents a novel operation mode of LCE actuators based on the wrinkling behavior of an LCE-elastomer bilayer architecture. Embedding a liquid-metal-based conductive ink within the LCE enables electrical control of surface wrinkling through Joule heating. The actuator cells can generate wrinkles with amplitudes ranging from 17 to 45 mu m within 30 s under an input power of 2 W and a voltage on the order of 1 V. As the bilayer is composed entirely of soft materials, it is highly deformable, flexible, and can be integrated into a multi-cell array capable of bending on curved surfaces.
ADVANCED INTELLIGENT SYSTEMS
(2023)
Proceedings Paper
Computer Science, Interdisciplinary Applications
Tate Johnson, Dinesh K. Patel, Humphrey Yang, Umut Civici, Adriane Fernandes Minori, Lining Yao
Summary: FlexTure is a method for creating pop-up kirigami structures using a selectively bonded bilayer. These structures provide a new design space for accessible and rapid prototyping of dynamic surfaces. The tactile and aesthetic effects of the surfaces can be adjusted through the configuration of cuts and layer selection. The study provides a design workflow and experimental measurements of the mechanical properties of the surfaces, along with application concepts and a computational design tool.
DESIGNING INTERACTIVE SYSTEMS CONFERENCE, DIS 2023
(2023)
Proceedings Paper
Automation & Control Systems
Paul Nadan, Dinesh K. Patel, Catherine Pavlov, Spencer Backus, Aaron M. Johnson
Summary: Microspine grippers enable robots to climb steep slopes and cliffs for geological exploration. A novel 3D-printed microspine suspension design is proposed, using the Hybrid Deposition Manufacturing (HDM) process and Fused Deposition Manufacturing (FDM) alone. The FDM process can produce microspines with equivalent stiffness and superior load and fatigue response compared to traditional manufacturing methods.
2022 IEEE/RSJ INTERNATIONAL CONFERENCE ON INTELLIGENT ROBOTS AND SYSTEMS (IROS)
(2022)
Proceedings Paper
Computer Science, Information Systems
Humphrey Yang, Tate Johnson, Ke Zhong, Dinesh K. Patel, Gina Olson, Carmel Majidi, Mohammad Islam, Lining Yao
Summary: This work combines compliant mechanisms with tensioning cables to create dynamically reconfigurable kinematic mechanisms. The devices' kinematics is determined by the layout of bendable rods and additional cables function as on-demand motion constraints. Various HCI use cases are demonstrated.
PROCEEDINGS OF THE 2022 CHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS (CHI' 22)
(2022)
