Review
Chemistry, Multidisciplinary
Yi-Yu Cai, Yun Chang Choi, Cherie R. Kagan
Summary: Colloidal noble metal nanoparticles can be assembled into different forms of artificial metamolecules and materials with tunable optical properties, allowing manipulation of light transmission and reflection.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Nicholas I. Cool, Diane G. Sellers, Mohammed Al-Hashimi, Sarbajit Banerjee
Summary: Heating, cooling, and lighting contribute significantly to the energy consumption of buildings. Development of a thermochromic material can passively modulate solar heat gain, increasing building energy efficiency. This study demonstrates the manufacturing of thermochromic fenestration elements with high transparency and near-infrared modulation through alloying and encapsulation of nanocrystals.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Alessandro Longato, Mirko Vanzan, Elena Colusso, Stefano Corni, Alessandro Martucci
Summary: Crystalline tungsten trioxide thin films covered with gold and platinum nanoparticles were synthesized and used as optical sensors for gaseous hydrogen. The sensing performances were found to be strongly influenced by the catalyst used, with platinum yielding the best results. Surprisingly, gold nanoparticles also showed remarkable sensing activity, which was found to be dependent on their size.
Review
Chemistry, Multidisciplinary
Francesco Muniz-miranda
Summary: The article discusses the characteristics of organometallic nanoparticles composed of metal cores and organic ligands, which exhibit intermediate properties between atoms and molecules, suitable for description and investigation using time-dependent density functional theory.
Review
Chemistry, Analytical
Shou-Zhi Yang, Qi-Ao Liu, Yan-Ling Liu, Guo-Jun Weng, Jian Zhu, Jian-Jun Li
Summary: The utilization of noble metal nanoparticles in optical diagnosis platforms for pathogenic bacteria has provided highly sensitive, selective, and easy-to-use detection tools. The review summarizes recent advancements in this field, covering introduction of pathogens and nanoparticles, discussion of optical detection methods, and descriptions of corresponding algorithms and point-of-care devices. Present limitations and future research directions are also discussed in the review.
Article
Chemistry, Physical
Ming-Yu Qi, Zi-Rong Tang, Yi-Jun Xu
Summary: The sun provides a vast amount of clean and renewable energy, and the challenge lies in utilizing this decentralized energy with appropriate media. Plasmonic metal-based nanostructures, such as gold and silver, are fascinating materials for solar energy conversion due to their unique surface plasmon resonance (SPR) capability. Modulating the optical absorption peaks of nonplasmonic metals, like small platinum nanoparticles, without altering their size has been a grand challenge. Recently, a near field scattering (NFS) optical model was demonstrated to manipulate the absorption peaks of platinum nanoparticles by adjusting their dielectric environment, paving the way for tuning the optical absorption properties of other metal nanoparticles and semiconductor quantum dots.
Article
Engineering, Electrical & Electronic
Bikram Keshari Das, Tanushree Das, Dipteerekha Das
Summary: A simple negative temperature coefficient (NTC) thermistor material ZnO was synthesized by mechanical alloying and its structural and microstructural properties were investigated. Electrical properties were studied in the temperature range of 300-500 degrees C and frequency range of 100 Hz-1 MHz. The synthesized sample showed typical NTC behavior and the Steinhart-Hart equations were used to analyze its suitability for thermistor application.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Chemistry, Physical
Okan K. Orhan, Mauricio Ponga
Summary: This study demonstrates the plasmonic performance of noble-metal nanoparticles with exotic HCP polytypes compared to conventional FCC counterparts. It shows that HCP phases have better thermal and mechanical stability at high temperatures, produce bulk plasmons at lower energies, and have comparable lifetimes. Furthermore, the peak locations and lifetimes of LSPR can be tuned by controlling operational temperature, the dielectric permittivity of the hosting matrix, and the grain size.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Review
Chemistry, Multidisciplinary
Hyunjoong Kim, Tae Yong Yoo, Megalamane S. Bootharaju, Jeong Hyun Kim, Dong Young Chung, Taeghwan Hyeon
Summary: Noble metal-based multimetallic nanoparticles (NMMNs) have multifunctional and synergistic effects for various catalytic applications. Experimental and theoretical studies can tune the performance of nanoparticles. Challenges remain in synthesizing NMMNs with ideal catalytic characteristics.
Article
Agriculture, Multidisciplinary
A. Tugnolo, V Giovenzana, R. Beghi, S. Grassi, C. Alamprese, A. Casson, E. Casiraghi, R. Guidetti
Summary: A diagnostic tool calibrated by means of image analysis was proposed to evaluate the maturation degree of oil olives, providing promising prediction capabilities. Spectroscopic analyses were conducted using benchtop FT-NIR and portable vis/NIR instruments, with the models showing high accuracy in predicting the ripening stage of olives from different regions. The variable selection using the iPLS algorithm led to an improved model stability and complexity, paving the way for simplified and automated systems for olives ripening determination and sorting.
COMPUTERS AND ELECTRONICS IN AGRICULTURE
(2021)
Review
Microbiology
Martyna Janicka, Katarzyna Ranoszek-Soliwoda, Grzegorz Chodaczek, Malgorzata Antos-Bielska, Marek Brytan, Emilia Tomaszewska, Grzegorz Celichowski, Jaroslaw Grobelny, Joanna Cymerys, Malgorzata Krzyzowska, Marcin Chodkowski
Summary: Neuroinfections caused by herpesviruses, particularly HHV-1, pose a significant challenge due to limited therapeutic options in the pharmaceutical sector. HHV-1 infection has been associated with neurodegenerative diseases like Alzheimer's, warranting the search for new effective therapies. Advancements in nanotechnology offer new possibilities for treating neuroinflammation, with gold and silver nanoparticles showing promise in clinical trials for herpesvirus neuroinfection.
Article
Chemistry, Multidisciplinary
P. Cardenas Lopez, M. J. Uttinger, N. E. Traore, H. A. Khan, D. Drobek, B. Apeleo Zubiri, E. Spiecker, L. Pflug, W. Peukert, J. Walter
Summary: In this study, a method for retrieving the size and composition of noble metal Ag-Au alloy nanoparticles simultaneously is introduced. The method utilizes an analytical ultracentrifuge equipped with a multiwavelength extinction detector to measure the optical and sedimentation properties of the particles. The presented approach provides a simple and fast way to determine noble metal alloy nanoparticle size and composition distributions, contributing to improved synthesis and scale-up of particulate systems.
Article
Food Science & Technology
Weipeng Tong, Genjin Tao, Yuhao Wu, Xuelan Chen, Yuankui Leng, Xiaolin Huang, Yonghua Xiong
Summary: This article reviews the state-of-the-art sensors for food safety monitoring based on the aggregation of noble metal nanoparticles, focusing on the sensing principles and analytical performance of selected representative food hazardous substances. Several examples of sensors based on the aggregation of noble metal nanoparticles are highlighted, and the challenges and future perspectives are discussed. This review provides comprehensive information and great motivation for researchers to promote food safety development.
TRENDS IN FOOD SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Physical
Lei Ye, Zhongming Cao, Xiangmei Liu, Zhenduo Cui, Zhaoyang Li, Yanqin Liang, Shengli Zhu, Shuilin Wu
Summary: This review examines the methods and mechanisms of using noble metal nanoparticles and functionalized nanocomposites to combat pathogenic bacterial infections. Noble metal nanoparticles have multiple bactericidal properties and can kill bacteria and eradicate biofilms through various mechanisms. Additionally, these nanoparticles can generate local hyperthermia or radical oxygen species. However, balancing antibacterial efficacy and metallic poisoning is crucial for their safe biomedical application.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Hao Wang, Yi Zhang, Yali Zhang, Yunqing Li, Xiaoning Wang, Huifang Wang, Winston Duo Wu, Xiaoguang Bao, Zhangxiong Wu
Summary: This study proposes an aerosol drying impregnation method for the rapid and scalable synthesis of silica-supported bimetallic nanoparticles with homogeneous alloying. The method allows for control over the composition and size of the nanoparticles and avoids the use of expensive metal salts and complicated experimental procedures. The supported PdNi nanoparticles exhibit high activity and selectivity in the catalytic semihydrogenation of phenylacetylene.
Article
Archaeology
Christine Romano, Thomas Lam, G. Asher Newsome, Joshua A. Taillon, Nicole Little, Jia-sun Tsang
STUDIES IN CONSERVATION
(2020)
Article
Materials Science, Multidisciplinary
Joshua A. Taillon, Thomas F. Bina, Raymond L. Plante, Marcus W. Newrock, Gretchen R. Greene, June W. Lau
Summary: NexusLIMS is an electron microscopy laboratory information management system designed and implemented by NIST for a multi-user facility. It includes network infrastructure, software package, and user interface and relies on existing organizational procedures and information collection to provide a complete record of research experiments.
MICROSCOPY AND MICROANALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Thomas G. Farinha, Tao Gong, Peifen Lyu, Ece Deniz, John M. Hoerauf, Marina S. Leite
Summary: This study demonstrates the potential of utilizing magnesium for optical tuning through etching in water, with modulation of etch rate by controlling temperature and structural dimensionality, and substantial tuning range of optical resonances across the visible frequency range.
OPTICAL MATERIALS EXPRESS
(2021)
Article
Chemistry, Physical
Meghna Srivastava, John M. Howard, Tao Gong, Mariama Rebello Sousa Dias, Marina S. Leite
Summary: Perovskite solar cells are a promising candidate for next-generation solar systems, and machine learning and autonomous experimentation offer tools to accelerate practical device advancements and gain physical understanding. Applying machine learning to Perovskite solar cell research can benefit all stages of design, synthesis, and testing, while also driving the development of promising research directions.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Materials Science, Multidisciplinary
John M. Howard, Kevin J. Palm, Qiong Wang, Erica Lee, Antonio Abate, Jeremy N. Munday, Marina S. Leite
Summary: Metal halide perovskites can be stabilized by adding cesium, but they remain sensitive to various factors like water, oxygen, temperature, and light. The study reveals reversible changes in optical properties of Cs(0.05)FA(0.79)MA(0.16)Pb(I0.83Br0.17)(3) under different humidity levels, with improvements in light emission.
ADVANCED OPTICAL MATERIALS
(2021)
Editorial Material
Energy & Fuels
Marina S. Leite
Article
Chemistry, Physical
Molly Kate Kreider, Abdul Qadeer Rehan, Robert M. Kent, Anibal T. Bezerra, Mariama Rebello Sousa Dias
Summary: This study reports a surface plasmon resonance sensor based on Al-Au thinfilms, which outperforms conventional Au sensors by providing better performance at high temperatures. Through experimental and theoretical research, it is found that the alloyed sensors exhibit higher sensitivity in refractive index measurement.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
John M. Howard, Qiong Wang, Meghna Srivastava, Tao Gong, Erica Lee, Antonio Abate, Marina S. Leite
Summary: This study investigates the light emission dynamics of metal halide perovskite photovoltaics under humidity conditions and successfully predicts the future path of light emission using machine learning forecasting models, providing a framework for the design of stable perovskite devices in the future.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Peifen Lyu, Tao Gong, Mariama Rebello Sousa Dias, Marina S. Leite
Summary: This multilayer thin film-based color filter, incorporating biodegradable Mg and MgO materials, displays a broad range of vivid hues by controlling the film thickness and exhibits minimal color changes at different viewing angles. It instantly fades away upon immersion in water and gradually transitions to a different hue with the removal of Mg layers, achieving transient color responses.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Margaret A. Duncan, Landin Barney, Mariama Rebello Sousa Dias, Marina S. Leite
Summary: This study demonstrates high-temperature structural color pixels based on refractory metals, which exhibit color changes through the formation of nanometer-scale metal oxide thin-film bilayers through in situ oxidation. These materials offer high-temperature stability and can be applied as optical components in vacuum or inert atmospheres.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Gabriel da Silva Macedo, Mariama Rebello de Sousa Dias, Anibal Thiago Bezerra
Summary: The engineering of optoelectronic devices is closely related to the dependency of quantum wells properties with structural parameters. Obtaining their properties relies on solving Schrodinger's equation employing several degrees of approximation as the influence of band non-parabolicity effects. In general, the more sophisticated the approximations the longer the development cycle. To efficiently analyze the response of structures equipped with quantum wells, we propose using an artificial neural network trained with the results from the solution of Schrodinger's equation. We observe an impressive agreement between the predicted quantum well's eigenenergies and effective masses, in comparison to the results obtained from the iterative solution of the Schrodinger equation, for an extensive range of structures. The time spent to retrieve the properties of the structures using the artificial neural network was a fraction of the time spent with the solution of Schrodinger's equation, enabling the neural network to be considered an effective tool in the development and improvement optoelectronic devices.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Materials Science, Multidisciplinary
Cesar E. P. Villegas, Marina S. Leite, Andrea Marini, Alexandre R. Rocha
Summary: Photoexcited metals can generate highly energetic hot carriers, which is important for technological applications. The hot-carrier dynamics in Au-group metals have been extensively studied but are still scarce in the Pt-group metals. Ab initio many-body perturbation theory is used to investigate the generation, relaxation times, and mean free path of hot carriers in bulk Pd and Pt. The study reveals that the photoexcited carriers in these metals are mainly generated in the near-infrared range.
Proceedings Paper
Engineering, Electrical & Electronic
Marina S. Leite
Summary: Reconfigurable photonic devices can transform the design of next-generation optical devices, with applications ranging from encryption to biodegradable displays. The functionality of these devices can be adjusted based on different conditions, such as thickness and chemical composition.
2021 IEEE RESEARCH AND APPLICATIONS OF PHOTONICS IN DEFENSE CONFERENCE (RAPID)
(2021)
