Article
Spectroscopy
Jae Hwan Lee, Young -Su Jeong, Young-jin Koh, Jongseon Kim, Hyunwoo Nam, Hyungbin Son, Sun-Kyung Choi
Summary: This study proposes a stand-off Raman spectroscopy system using dual-wavelength in the UV region for detecting hazardous chemicals. The UV-generated Raman spectrum avoids solar background noise during daytime. Two excitation wavelengths of 213 and 266 nm are generated from Nd:YAG laser, with different signal-to-noise ratios. Raman spectra of chemicals are acquired and analyzed using a dual-wavelength laser and spectrometer, demonstrating the application of dual-wavelength Raman spectroscopy.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Engineering, Electrical & Electronic
Taihao Chen, Yong Fang, Mengru Zhu, Zhiwei Zhao, Wei Lei, Zhuoya Zhu, Helong Jiang
Summary: Flexible dual-spectral carbon nanodots/flexible n-silicon heterojunction photodetectors with high responsivity and detectivity are reported. These detectors show photo response in UV illumination and only in forward bias under visible illumination. The photocurrent of the device remains high even under bending strain.
SENSORS AND ACTUATORS A-PHYSICAL
(2024)
Article
Chemistry, Analytical
Hamish I. Stewart, Dmitry Grinfeld, Anastassios Giannakopulos, Johannes Petzoldt, Toby Shanley, Matthew Garland, Eduard Denisov, Amelia C. Peterson, Eugen Damoc, Martin Zeller, Tabiwang N. Arrey, Anna Pashkova, Santosh Renuse, Amirmansoor Hakimi, Andreas Kuehn, Matthias Biel, Arne Kreutzmann, Bernd Hagedorn, Immo Colonius, Adrian Schuetz, Arne Stefes, Ankit Dwivedi, Daniel Mourad, Max Hoek, Bastian Reitemeier, Philipp Cochems, Alexander Kholomeev, Robert Ostermann, Gregor Quiring, Maximilian Ochmann, Sascha Moehring, Alexander Wagner, Andre Petker, Sebastian Kanngiesser, Michael Wiedemeyer, Wilko Balschun, Daniel Hermanson, Vlad Zabrouskov, Alexander A. Makarov, Christian Hock
Summary: This study developed a new hybrid mass spectrometer that combines a mass-resolving quadrupole, the Orbitrap, and the novel Asymmetric Track Lossless (Astral) analyzer. The new instrument enables faster acquisition of high-resolution accurate mass MS/MS spectra, leading to significant improvements in proteomics research.
ANALYTICAL CHEMISTRY
(2023)
Article
Nanoscience & Nanotechnology
Kyoung Min Yoo, Ray T. Chen
Summary: This paper proposes a novel spatial heterodyne Fourier transform spectrometer (SHFTS) that integrates a subwavelength grating coupler (SWGC) to overcome the limitations of bandwidth and resolution. The SWGC allows for dual-polarization bandpass sampling on the Si3N4 platform, enabling the reconstruction of each narrow-band channel without aliasing error or resolution degradation.
Article
Chemistry, Multidisciplinary
Yi-Yu Zhang, Yi-Xiong Zheng, Jun-Yu Lai, Jung-Hun Seo, Kwang Hong Lee, Chuan Seng Tan, Shu An, Sang-Ho Shin, Bongkwon Son, Munho Kim
Summary: In this study, high performance flexible AlGaN/GaN 2DEG-IPDs have been demonstrated by utilizing AlGaN/GaN heterostructure membranes, which were engineered to reduce dark current and boost photocurrent. The use of 2DEG layer in transferrable membranes holds great promise for advanced UV detection systems in various biomedical and environmental applications.
Article
Chemistry, Analytical
Hongjia Zhang, Heyuan Jia, Zhiwu Gao, Yu Xiang, Ting Jiang, Wei Xu
Summary: With improved analytical performances, miniature mass spectrometers are widely used in various applications. High throughput analysis of multi-targets is crucial, especially for in-situ applications. In this study, parallel pseudo-MRM mode was developed on a brick miniature mass spectrometer, significantly increasing the throughput for multi-target screening. The method was successfully applied for target screening and quantitative analysis.
Article
Materials Science, Multidisciplinary
Ming-Ming Fan, Kang-Li Xu, Xiu-Yan Li, Gao-Hang He, Ling Cao
Summary: By constructing a PEDOT:PSS/alpha-Ga2O3 heterojuncion through complex processes, a self-powered PEDOT:PSS/alpha-Ga2O3 photodetector with dual-band photodetection capability has been successfully developed, showing high responsivity in both solar-blind UV and visible light bands. This photodetector not only greatly improves responsivity, but also achieves dual-band photodetection for the first time among self-powered Ga2O3-based detectors.
JOURNAL OF MATERIALS CHEMISTRY C
(2021)
Article
Multidisciplinary Sciences
Dorothea Mylopotamitaki, Florian S. Harking, Alberto J. Taurozzi, Zandra Fagernas, Ricardo M. Godinho, Geoff M. Smith, Marcel Weiss, Tim Schueler, Shannon P. McPherron, Harald Meller, Joo Cascalheira, Nuno Bicho, Jesper V. Olsen, Jean-Jacques Hublin, Frido Welker
Summary: High-throughput proteomic analysis of archaeological skeletal remains can provide valuable information about past fauna community compositions and species dispersals. However, the extraction of ancient proteins from bone specimens is challenging due to degradation. In this study, six proteomic extraction methods were compared on Late Pleistocene remains with different levels of proteome preservation. The results showed that simple acid-insoluble extraction methods performed better in highly degraded contexts, while for well-preserved specimens, the approach using EDTA demineralization and protease-mix proteolysis yielded the highest number of identified peptides.
SCIENTIFIC REPORTS
(2023)
Article
Acoustics
Aleksandr Barulin, Hyemi Park, Byullee Park, Inki Kim
Summary: Research on using ultraviolet and visible light is advancing photoacoustic microscopy. A groundbreaking simulation study proposes incorporating multilayer metalenses into ultraviolet-visible photoacoustic microscopy. The metalens achieves high-resolution imaging with superior endogenous contrast of targets with ultraviolet and visible optical absorption bands, opening new possibilities for downsized multispectral photoacoustic microscopy in clinical and preclinical applications.
Article
Chemistry, Physical
Alejandro Barrios, Cody Kunka, John Nogan, Khalid Hattar, Brad L. Boyce
Summary: This work presents a new methodology for high-throughput fatigue testing of thin films at the microscale, utilizing a microelectromechanical systems-based Si carrier to simultaneously and independently test an array of samples. The microscale fatigue behavior of nanocrystalline Al is efficiently characterized through automated fatigue testing with in situ scanning electron microscopy, reducing the total testing time significantly and revealing the stochastic nature of the microscale fatigue response. The manuscript also discusses the potential adaptations of this methodology for different samples, materials, geometries, and loading modes.
Article
Chemistry, Analytical
Haitao Liu, Shuoran Niu, Ying Zhou, Liwei Yu, Yue Ou, Jiayao Ding
Summary: This study presents a method for precise control and high-speed spectrum data acquisition based on a scanning grating mirror developed by the researchers. A control system circuit and a spectrum signal acquisition system were designed and manufactured. Experimental results showed successful precise control of the mirror swing and high-speed acquisition and transmission of spectrum and angle data.
Article
Chemistry, Physical
Mingming Chen, Xuemin Shen, Chen Zhou, Dawei Cao, Wei Xue
Summary: A high-performance self-powered UV photodetector based on ferroelectric PZT thin films has been fabricated, simplifying device structure and fabrication process. The unique bulk photovoltaic effect of ferroelectric materials can enhance device performance compared to complex device structures. Additionally, the self-powered photocurrent is further enhanced when downward polarizing the PZT thin film.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Shuvaraj Ghosh, Sourav Mondal, Santanu Pal, Durga Basak
Summary: This work presents a simple metal-Zn2SnO4 (ZTO) thin film-metal structure for broad-band ultraviolet-B (UVB) to visible photodetection with high responsivity and detectivity values. The study also proposes an ionization transition level of an in-gap defect in ZTO causing sensitivity to visible light, as revealed by successive responsivity measurements.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Plant Sciences
Yuwei Lu, Jinhu Wang, Ling Fu, Lejun Yu, Qian Liu
Summary: This study proposes a high-precision phenotyping method for rice panicles based on visible light scanning imaging and deep learning technology. It allows for high-throughput extraction of critical traits without separating and threshing the rice panicles. The method has low cost, robust performance, and can provide new ideas and methods for extracting traits of rice and other crop panicles.
FRONTIERS IN PLANT SCIENCE
(2023)
Article
Engineering, Electrical & Electronic
Shan Li, Jian-Ying Yue, Chao Wu, Zeng Liu, Zu-Yong Yan, Pei-Gang Li, Dao-You Guo, Zhen-Ping Wu, Yu-Feng Guo, Wei-Hua Tang
Summary: Self-powered ultraviolet photodetectors based on beta-Ga2O3/WO3 nanoparticles exhibit excellent photodetection properties with low noise, high photo-to-dark current ratio, and outstanding spectral selectivity, paving the way for next-generation nanodevices.
IEEE SENSORS JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Sarah Lamaison, David Wakerley, Frauke Kracke, Thomas Moore, Lan Zhou, Dong Un Lee, Lei Wang, McKenzie A. Hubert, Jaime E. Aviles Acosta, John M. Gregoire, Eric B. Duoss, Sarah Baker, Victor A. Beck, Alfred M. Spormann, Marc Fontecave, Christopher Hahn, Thomas F. Jaramillo
Summary: CO2 emissions can be transformed into high-added-value commodities through CO2 electrocatalysis, with the need for efficient low-cost electrocatalysts. A gas diffusion electrode containing highly dispersed Ag sites in a low-cost Zn matrix was developed, showing unprecedented Ag mass activity for CO production. Further electrolyte engineering demonstrated that halide anions can improve stability and activity of the Zn-Ag catalyst, outperforming pure Ag and Au.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Karun K. Rao, Yungchieh Lai, Lan Zhou, Joel A. Haber, Michal Bajdich, John M. Gregoire
Summary: The article discusses the importance of the oxygen evolution reaction (OER) in sustainable energy technologies, highlighting differences in catalyst development in alkaline and acidic environments. It introduces a durability descriptor based on the d-electron count of metal elements for rapid catalyst screening and emphasizes the importance of a codesign approach for device-level guidance in catalyst development.
CHEMISTRY OF MATERIALS
(2022)
Article
Multidisciplinary Sciences
Shufeng Kong, Francesco Ricci, Dan Guevarra, Jeffrey B. Neaton, Carla P. Gomes, John M. Gregoire
Summary: The research shows that important properties of materials can be studied through the computational characterization of electrons and phonons. This article introduces a machine learning framework called Mat2Spec, which can efficiently calculate the spectral properties of materials, providing a new approach for the discovery of thermoelectric materials and solar energy technologies.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Dan Guevarra, Joel A. Haber, Yu Wang, Lan Zhou, Kevin Kan, Matthias H. Richter, John M. Gregoire
Summary: This study used high throughput synthesis and electrochemistry to explore metal oxide electrocatalysts containing different metal elements, and discovered catalysts with excellent stability and activity, providing multiple avenues for further catalyst development.
Article
Chemistry, Multidisciplinary
Fuzhan Rahmanian, Jackson Flowers, Dan Guevarra, Matthias Richter, Maximilian Fichtner, Phillip Donnely, John M. Gregoire, Helge S. Stein
Summary: This study presents a method for integrating multiple actions within a hierarchical experimental laboratory automation and orchestration (HELAO) framework, focusing on the operation paradigm of materials acceleration platforms (MAPs). The authors demonstrated the capability of orchestrating distributed research instruments to integrate data from experiments, simulations, and databases. They also showed the effectiveness of parallelization in accelerating knowledge generation through parallel electrochemistry experiments orchestrated by HELAO.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Lan Zhou, Yu Wang, Kevin Kan, Daphne M. Lucana, Dan Guevarra, Yungchieh Lai, John M. Gregoire
Summary: This study investigates ternary antimonate (X-Sb-O) materials as potential photoanodes for solar-driven water splitting to produce dioxygen. Through high-throughput methods and automated analysis, 19 photoanode phases with broad spectral response were discovered. The stability of ternary antimonates and the characteristics of main group oxides provide opportunities for the development of stable photoanodes in the future.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Karun K. K. Rao, Lan Zhou, Yungchieh Lai, Matthias H. H. Richter, Xiang Li, Yubing Lu, Junko Yano, John M. M. Gregoire, Michal Bajdich
Summary: In this study, the stability and catalytic behavior of Ni-Sb-O oxides for oxygen evolution reaction were investigated. A previously unknown phase was discovered in Ni1-xSbxOz with x > 0.33. Computational simulations and experimental measurements were used to predict and validate the structural and catalytic properties of these oxides. The findings provide valuable insights for the design and optimization of durable and efficient electrode materials for OER.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Lan Zhou, Elizabeth A. Peterson, Matthias H. Richter, Yungchieh Lai, Jeffrey B. Neaton, John M. Gregoire
Summary: This study demonstrates the potential of Bi-W-Fe oxides synthesized under nonequilibrium conditions for efficient and durable solar-driven photoelectrochemical water oxidation. Incorporation of Fe into Bi2WO6 increases the valence band position, resulting in a band gap of approximately 2 eV. The Fe-mediated band tuning also retains a turn-on potential for photoanodic current near 0.4 V versus RHE. These findings have important implications for the development of scalable solar fuel technologies.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Multidisciplinary Sciences
Michael J. Statt, Brian A. Rohr, Dan Guevarra, Santosh K. Suram, Thomas E. Morrell, John M. Gregoire
Summary: This article presents a high throughput experimentation database for metal oxide solid state materials. The Materials Provenance Store (MPS) manages metadata and experimental provenance for raw material acquisition, synthesis, and various material characterization techniques. The database file can be distributed to users for independent querying and downloading of data of interest.
Article
Chemistry, Physical
Nicholas B. Watkins, Zachary J. Schiffer, Yungchieh Lai, Charles B. Musgrave, Harry A. Atwater, William A. Goddard, Theodor Agapie, Jonas C. Peters, John M. Gregoire
Summary: The hydrodynamics of electrochemical CO2 reduction (CO2R) systems have a significant impact on catalyst activity and selectivity. Previous studies have mainly focused on laminar and CO2-sparged systems, while this study investigates a wide range of hydrodynamics using electrolyte recirculation systems. It is found that increased hydrodynamics at the electrode surface affect the Tafel slopes of ethylene and methane, indicating that mass transport plays a crucial role in determining reaction mechanisms and product distribution. The study highlights the importance of considering mass transport conditions in CO2R mechanistic research. Additionally, the analysis shows that organic coatings can protect active sites from hydrodynamic effects and enhance the reduction of CO to desired products.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Michael J. Statt, Brian A. Rohr, Kris Brown, Dan Guevarra, Jens Hummelshoj, Linda Hung, Abraham Anapolsky, John M. Gregoire, Santosh K. Suram
Summary: This manuscript presents an event-sourced architecture for materials provenance (ESAMP) that addresses the challenges in data generation, ingestion, and materials state-aware machine learning in the field of accelerating materials discovery. By using this architecture, the evolution of a material's state can be tracked, leading to the generation of enhanced datasets for data-driven materials discovery.
Article
Chemistry, Multidisciplinary
Dan Guevarra, Kevin Kan, Yungchieh Lai, Ryan J. R. Jones, Lan Zhou, Phillip Donnelly, Matthias Richter, Helge S. Stein, John M. Gregoire
Summary: Advancements in artificial intelligence are expanding the automation of materials and chemistry experiments. The introduction of hierarchical decision-making has also motivated coordination among multiple research workflows. Researchers have developed HELAO-async, a framework for hierarchical experimental laboratory automation and orchestration using asynchronous programming, which enables coordinated workflows of adaptive experiments in materials acceleration platforms.
Article
Chemistry, Physical
Lan Zhou, Aniketa Shinde, Ming-Chiang Chang, R. Bruce van Dover, Michael O. Thompson, John M. Gregoire
Summary: Efficient and durable catalysis of the oxygen evolution reaction in acidic media is a major challenge. Antimony-based rutile oxides show promise but suffer from poor durability at high concentrations of activity-promoting elements like Mn. By using combinations of Sn, Ti, and Sb, we have discovered a new family of catalysts with activity in rutile oxides with Mn concentration less than 40%.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
Michaela Burke Stevens, Megha Anand, Melissa E. Kreider, Eliza K. Price, Jose Zamara Zeledon, Liang Wang, Jiayu Peng, Hao Li, John M. Gregoire, Jens Hummelshoj, Thomas F. Jaramillo, Hongfei Jia, Jens K. Norskov, Yuriy Roman-Leshkov, Yang Shao-Horn, Brian D. Storey, Santosh K. Suram, Steven B. Torrisi, Joseph H. Montoya
Summary: In this article, the results of a research consortium focused on advancing understanding of oxygen reduction reaction (ORR) catalysis are highlighted. Collaborations between different institutions and scientific disciplines have provided unique insights into fuel cell catalysts. The article emphasizes the importance of material designs, catalyst durability, and the role of emerging artificial intelligence tools in accelerating the design and discovery of fuel cell catalysts.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
