Article
Chemistry, Physical
Panpan Wang, Fangyuan Zhao, Anna Frank, Sarra Zerria, Anna Lielpetere, Adrian Ruff, Marc M. Nowaczyk, Wolfgang Schuhmann, Felipe Conzuelo
Summary: Photosystem I (PSI) has the potential for fabrication of light-driven semi-artificial bioelectrodes, with Langmuir monolayers and specially designed redox polymers enabling efficient electron transfer for advanced biophotoanodes. The developed bioelectrode can generate substantial photocurrents and even operate at low potentials, surpassing the performance of comparable devices. When combined with a gas-breathing biocathode, the assembly forms a biophotovoltaic cell that delivers considerable power outputs, showcasing the potential for advanced biophotovoltaic device development.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Panpan Wang, Anna Frank, Fangyuan Zhao, Julian Szczesny, Joao R. C. Junqueira, Sonia Zacarias, Adrian Ruff, Marc M. Nowaczyk, Ines A. C. Pereira, Matthias Roegner, Felipe Conzuelo, Wolfgang Schuhmann
Summary: A well-defined assembly of PSI complexes can optimize the performance of semi-artificial energy conversion devices, reducing short-circuiting processes. By combining native PSI trimers and monomers from the same organism, a high density of photoactive proteins is achieved, enabling efficient electron transfer and light-induced photocurrent generation. Coupling the photocathode with a [NiFeSe]-hydrogenase confirms the potential for light-induced H-2 evolution.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Computer Science, Information Systems
Martin Florovic, Jaroslav Kovac, Ales Chvala, Jaroslav Kovac, Jean-Claude Jacquet, Sylvain Laurent Delage
Summary: This article introduces a differential analysis method using a device analytical spatial electrical model to explore the impact of temperature profile and trapping phenomena on electrical attributes. Through experimental and theoretical analysis, the average temperature of the device was determined and compared with the threshold voltage shift of HEMT.
Article
Chemistry, Physical
Dongli Qin, Feng Pan, Jie Zhou, Zibo Xu, Yuan Deng
Summary: A method based on FET is proposed to optimize the thermoelectric properties of bismuth telluride thin films, allowing control over Seebeck coefficient, electrical conductivity, and carrier type. The experiments showed promising results in achieving high power factor and ZT values in both N-type and P-type. Furthermore, a N-P pair device was constructed by applying different gate voltages on the thin films, and Te-doped bismuth telluride thin films demonstrated adjustable sensitivity in a thin film thermocouple.
Article
Biochemistry & Molecular Biology
Panpan Wang, Anna Frank, Fangyuan Zhao, Marc M. Nowaczyk, Felipe Conzuelo, Wolfgang Schuhmann
Summary: The use of multilayered PSI monolayers can improve the performance of PSI-based biodevices by maximizing light absorption. However, the small loading of immobilized PSI molecules limits their practical application.
BIOELECTROCHEMISTRY
(2023)
Review
Oncology
Adrien Holzgreve, Nathalie L. Albert, Norbert Galldiks, Bogdana Suchorska
Summary: The use of positron emission tomography (PET) imaging in neuro-oncological surgery is vital for interpretation of imaging findings, treatment interventions, and surgical planning in patients with glioma, brain metastases, and meningioma. Advances in PET technology, such as amino acid tracers and specific ligands, provide promising perspectives for non-invasive prediction of molecular tumor characteristics, response assessment, and differentiation between tumor progression and treatment-related changes. Further developments in neuro-oncological imaging are expected from new techniques like hybrid PET/MR scanners and artificial intelligence methods.
Article
Energy & Fuels
Christopher D. Stachurski, John M. Williams, Pamela M. Tabaquin, Elisabeth D. Wood, Nsoki Phambu, G. Kane Jennings, David E. Cliffel
Summary: One challenge in biohybrid solar energy conversion is finding metal-free electrode materials to replace inorganic substrates in solar cell development. This study investigates commercially available Toray carbon paper as a high surface area carbon electrode for the development of photoactive bioelectrodes. The optimized PSI-PEDOT:PSS films on CP electrodes achieve a significant increase in photocurrent density, paving the way for scalable biohybrid energy production.
Article
Biochemistry & Molecular Biology
Marcin Szalkowski, Dorota Kowalska, Julian David Janna Olmos, Joanna Kargul, Sebastian Mackowski
Summary: One of the crucial challenges for science is the development of alternative pollution-free and renewable energy sources. Solar energy, especially solar fuel cells employing photosynthetic reaction centers, shows great potential due to their efficient photo-powered operation. However, the photobleaching of biomolecules limits their application in such cells. In this study, we investigated the relationship between photodamage dynamics of photosystem I and excitation wavelength, and achieved plasmonic enhancement of fluorescence using metallic nanostructures. Our findings provide insights for improving the photostability of PSI and optimizing biomimetic solar fuel cells.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Physics, Applied
Rajratan Basu
Summary: Alignment agents are crucial for electro-optic LC devices. Traditional organic agents are sensitive to UV rays and high temperatures. Recent research shows that 2D inorganic materials can be used as alternative agents, with potential advantages.
APPLIED PHYSICS LETTERS
(2023)
Article
Engineering, Electrical & Electronic
Suhyeong Cha, Sung-Min Hong
Summary: The theoretical investigation focuses on gallium-oxide-based modulation-doped field-effect transistors (MODFETs). A coupled drift-diffusion/multisubband Boltzmann transport equation solver is implemented to accurately consider the electrical characteristics of the two-dimensional electron gases (2DEGs) in thin-channel devices. The impact of various factors on the cutoff frequency is rigorously calculated, and it is found that a cutoff frequency of about 90 GHz can be achieved under certain conditions.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2022)
Article
Chemistry, Physical
Su Yeon Lee, Hyun Kyu Seo, Se Yeon Jeong, Min Kyu Yang
Summary: Hyper-field effect transistors (hyper-FETs) are crucial in the development of low-power logic devices. New devices need to be developed to overcome the limitations of conventional logic devices. In this study, a novel threshold switch (TS) material is proposed and connected to a FET device, demonstrating improved performance with lower subthreshold swing values, high on/off current ratios, and high durability.
Article
Optics
Zhixi Li, Feng Tang, Sihui Shang, Jingjun Wu, Jiahao Shao, Wei Liao, Bo Kong, Tixian Zeng, Xin Ye, Xiaodong Jiang, Liming Yang
Summary: The study focuses on constructing compact imaging devices based on metalenses for near-infrared microscopy, investigating their imaging performance and potential applications in detecting biomedical issues. This approach could promote the miniaturization trend of future optical systems.
Article
Biochemistry & Molecular Biology
Sebastian Szewczyk, Alice Goyal, Mateusz Abram, Gotard Burdzinski, Joanna Kargul, Krzysztof Gibasiewicz
Summary: This study investigates PSI complexes in the red alga and finds that the addition of reducing agents increases the proportion of active PSI complexes, but the efficiency of light-induced charge separation does not directly translate into photocurrent generation.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Optics
Ran Zhang, Xinyuan Gui, Haoyuan Cheng, Jinkui Chu
Summary: This study aims to explore the application of polarimetric imaging in image recovery underwater, using deep learning. By proposing a suitable model structure and loss function, and incorporating polarized information into the model, better image recovery results were achieved.
Article
Chemistry, Analytical
Tarakeswar Shaw, Gopinath Samanta, Debasis Mitra, Bappaditya Mandal, Robin Augustine
Summary: This article presents an efficient wireless power transfer (WPT) system using antenna-based topology for wearable devices, utilizing circular patch antennas and metamaterial (MTM) slab to improve power transfer efficiency (PTE). Through performance analysis and experimental validation on various parts of the human body, the system's versatile applicability is demonstrated.
Article
Physics, Applied
Daichi Suzuki, Daniela Serien, Kotaro Obata, Koji Sugioka, Aiko Narazaki, Nao Terasaki
Summary: In this study, the potential and application of laser-based micro-processing for patterning CNT films were assessed. It was found that this method can pattern micrometre-thick CNT films in micrometre spatial resolution and directly pattern the CNT films inside the protective film, which is not achievable by other processing technologies.
APPLIED PHYSICS EXPRESS
(2022)
Article
Biochemistry & Molecular Biology
Koichiro E. Kishi, Yoon Seok Kim, Masahiro Fukuda, Masatoshi Inoue, Tsukasa Kusakizako, Peter Y. Wang, Charu Ramakrishnan, Eamon F. X. Byrne, Elina Thadhani, Joseph M. Paggi, Toshiki E. Matsui, Keitaro Yamashita, Takashi Nagata, Masae Konno, Sean Quirin, Maisie Lo, Tyler Benster, Tomoko Uemura, Kehong Liu, Mikihiro Shibata, Norimichi Nomura, So Iwata, Osamu Nureki, Ron O. Dror, Keiichi Inoue, Karl Deisseroth, Hideaki E. Kato
Summary: ChRmine, a recently discovered pump-like cation-conducting channelrhodopsin, has opened new possibilities in optogenetics with its unique properties. The cryo-EM structure of ChRmine, revealed at 2.0A resolution, uncovers architectural features distinct from other channelrhodopsins and lays the foundation for the creation of new channelrhodopsins for various biological applications.
Article
Physics, Applied
Yoshitaro Sakata, Nao Terasaki
Summary: In this study, a novel non-contact thermal stress-induced light-scattering method (N-SILSM) is proposed for detecting polishing-induced microcracks on the surface of glass substrates. Microcracks and tiny particles can be distinguished and measured using temperature variation. This method contributes to improving the quality of glass substrate manufacturing and reducing defects.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2022)
Article
Physics, Applied
Nao Terasaki, Nao Ando, Kei Hyodo
Summary: This study proposes a novel method of using mechanoluminescent visual sensing to fill the gap in originally invisible mechanical behavior in modeling, evaluation and products. In folding tests of flexible electronic films, the method successfully visualizes strain concentration and provides instinctive understanding of complex dynamic mechanical information. Additionally, the mechanoluminescent pattern is influenced by the sticking situation of the flexible film on a folding plate with gripping tape.
JAPANESE JOURNAL OF APPLIED PHYSICS
(2022)
Article
Engineering, Chemical
Nao Terasaki, Yuki Fujio, Shin Horiuchi, Haruhisa Akiyama, Masami Itabashi
Summary: The study found that the shape of the bonding area in cross tension tests can lead to inconsistent stress concentration behaviors and crack growth/peeling behavior, which cause high scattering of CTS values. In contrast, using CT specimens with circular adhesive regions significantly reduced the scattering of CTS values and produced consistent mechanoluminescent patterns. This suggests that mechanoluminescence has the potential to effectively visualize mechanical behavior for optimizing test designs.
JOURNAL OF ADHESION
(2022)
Article
Biochemistry & Molecular Biology
Kano Suzuki, Maria del Carmen Marin, Masae Konno, Reza Bagherzadeh, Takeshi Murata, Keiichi Inoue
Summary: DTG/DTS rhodopsin is a light-driven proton-pumping microbial rhodopsin that utilizes a three residue motif (DTG or DTS) important for its function. It lacks a cytoplasmic proton donor residue, but can directly bind protons from the cytoplasmic solvent, enabling energy production and avoiding intracellular alkalization.
JOURNAL OF BIOLOGICAL CHEMISTRY
(2022)
Article
Ecology
Alexander L. Jaffe, Masae Konno, Yuma Kawasaki, Chihiro Kataoka, Oded Beja, Hideki Kandori, Keiichi Inoue, Jillian F. Banfield
Summary: This study found that Saccharibacteria Type-1 rhodopsins function as outward proton pumps and can rapidly uptake the chromophore retinal. The co-occurring microorganisms with Saccharibacteria showed evidence of the ability to produce retinal from beta-carotene, suggesting a potential association between them.
Article
Multidisciplinary Sciences
Kazuya Kikunaga, Nao Terasaki
Summary: This article introduces a luminescent material that enables the visualisation of static electricity, providing potential applications in solving industrial problems and observing electric charges in the air.
SCIENTIFIC REPORTS
(2022)
Article
Nanoscience & Nanotechnology
Daichi Suzuki, Yoshiyuki Nonoguchi, Kazumasa Shimamoto, Nao Terasaki
Summary: A highly stable technique for fabricating n-doped carbon nanotube (CNT) films is reported, where air stability is achieved by completely covering CNTs with n-dopants to prevent oxidation. The introduction of a parylene protective layer allows for air stability for over 365 days, and the n-doped CNTs demonstrate outstanding thermoelectric power generation in strong acids, alkalis, and alcohols. This versatile stabilization technique can be applied to various n-dopants and is expected to be crucial for practical applications of CNT devices.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Maria del Carmen Marin, Masae Konno, Hiromu Yawo, Keiichi Inoue
Summary: Microbial rhodopsins are a large family of photoreceptive membrane proteins that have diverse light-regulated functions. New subfamilies of microbial rhodopsins that transport H+ inwardly, known as light-driven inward H+ pumps, have recently been discovered. This study conducted the first functional conversion study by mutating key amino acids in a natural outward H+-pumping rhodopsin, resulting in the creation of an artificial inward H+ pump. This finding provides insights into the key processes that differentiate between outward and inward H+ pumps, and could contribute to the understanding of ion transport mechanisms in other ion-pumping proteins.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Multidisciplinary Sciences
Ariel Chazan, Ishita Das, Takayoshi Fujiwara, Shunya Murakoshi, Andrey Rozenberg, Ana Molina-Marquez, Fumiya K. Sano, Tatsuki Tanaka, Patricia Gomez-Villegas, Shirley Larom, Alina Pushkarev, Partha Malakar, Masumi Hasegawa, Yuya Tsukamoto, Tomohiro Ishizuka, Masae Konno, Takashi Nagata, Yosuke Mizuno, Kota Katayama, Rei Abe-Yoshizumi, Sanford Ruhman, Keiichi Inoue, Hideki Kandori, Rosa Leon, Wataru Shihoya, Susumu Yoshizawa, Mordechai Sheves, Osamu Nureki, Oded Beja
Summary: Light-harvesting carotenoids, such as zeaxanthin and lutein, transfer energy to the retinal chromophore of xanthorhodopsins and proteorhodopsins, indicating their potential role in rhodopsin phototrophy in lakes, seas, and oceans.
Article
Multidisciplinary Sciences
Shoko Hososhima, Shinji Ueno, Satoshi Okado, Ken-ichi Inoue, Masae Konno, Yumeka Yamauchi, Keiichi Inoue, Hiroko Terasaki, Hideki Kandori, Satoshi P. Tsunoda
Summary: In this study, the researchers investigated the ion channel properties of five light-gated cation channelrhodopsins (GtCCR1-5) from the cryptophyte algae Guillardia theta. They compared these CCRs with ChR2 and other widely used channelrhodopsins in optogenetics. The results showed that GtCCR4 exhibited high light sensitivity and temporal precision, making it a promising candidate for optogenetic neuronal activation.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Chun-Fu Chang, Masae Konno, Keiichi Inoue, Tahei Tahara
Summary: Schizorhodopsin (SzR) is a newly discovered microbial rhodopsin subfamily that functions as an unusual inward-proton pump upon absorbing light. The unique chromophore-protein interactions resulting from two major protein structural differences around the chromophore may be responsible for its unusual function. Therefore, it is crucial to understand how these differences affect the primary photoreaction dynamics.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Biophysics
Maria del Carmen Marin, Alexander L. Jaffe, Patrick T. West, Masae Konno, Jillian F. Banfield, Keiichi Inoue
Summary: Recent genomic and metagenomic analysis have identified many microbial rhodopsins with unique sequences. Functional characterization of these new microbial rhodopsins will enhance our understanding of their physiological roles.
BIOPHYSICS AND PHYSICOBIOLOGY
(2023)
Article
Chemistry, Physical
Yusuke Nakasone, Yuma Kawasaki, Masae Konno, Keiichi Inoue, Masahide Terazima
Summary: Heliorhodopsins (HeRs) are a new category of rhodopsins, which exist as dimers and have an inverted topology. This study investigated the conformational changes of HeRs using the transient grating (TG) and circular dichroism (CD) methods. The results showed that there were no significant conformation changes on the protein's surface during the early steps of the reaction, but a decrease in diffusion coefficient (D) was observed after the formation of the O intermediate. The contribution of the ICL1 helix in the conformational changes was examined. The study suggests that the hydrophilic residues in the ICL1 helix undergo structural changes during the process. Rating: 8/10
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
