Article
Endocrinology & Metabolism
Mehran Fazli, Richard Bertram
Summary: The endocrine cells of the anterior pituitary gland exhibit electrical activity, with bursting being the most effective pattern for hormone release. Activity synchronization is influenced by electrical coupling and physiological changes. Weak electrical coupling makes it difficult to predict the functional network.
FRONTIERS IN ENDOCRINOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Chunkao Ruan, Yongyi Chen, Li Qin, Peng Jia, Yugang Zeng, Yue Song, Yuxin Lei, Zhijun Zhang, Nan Zhang, Zaijin Li
Summary: This study demonstrates a gain-coupled DFB semiconductor laser emitting at 770 nm, which is easily manufactured and does not require complex processing technologies. The maximum continuous-wave output power reached was 116.3 mW at 20 degrees C, with a maximum side-mode-suppression ratio (SMSR) of 33.25 dB and a 3 dB linewidth of 1.78 pm.
APPLIED SCIENCES-BASEL
(2021)
Article
Multidisciplinary Sciences
Francesco Pisani, Djamal Gacemi, Angela Vasanelli, Lianhe Li, Alexander Giles Davies, Edmund Linfield, Carlo Sirtori, Yanko Todorov
Summary: In this study, a quantum infrared detector operating in the ultra-strong light-matter coupling regime driven by collective electronic excitations is explored. The strong collective electronic resonances are found to optimize photodetectors operating in this regime. These findings introduce a new approach to conceive optoelectronic devices based on the coherent interaction between electrons and photons.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
E. Aldirmaz, M. Guler, E. Guler, A. Dere, A. Tataroglu, F. Yakuphanoglu
Summary: SEM and DSC were used to characterize the microstructure and transformation temperature properties of the CuAlMnZn shape memory alloy used as a Schottky contact in Schottky diode fabrication. The produced diode exhibited good rectification in dark conditions, and the C-V and G/omega-V characteristics were found to significantly change with frequency.
SENSORS AND ACTUATORS A-PHYSICAL
(2021)
Article
Materials Science, Multidisciplinary
Liqun Liu, Chang Cai, Zejian Zhang, Shitong Zhang, Jian Deng, Bing Yang, Cheng Gu, Yuguang Ma
Summary: The organic lamellar single crystal reported serves as a versatile optoelectronic material with low threshold energy and high quantum efficiency, showing extraordinary device performance in optical pumping and light-emitting transistors.
ACS MATERIALS LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Guanghu He, Huang Luo, Chuanfang Yan, Yuting Wan, Dang Wu, Hang Luo, Yuan Liu, Sheng Chen
Summary: Achieving a synergistic improvement of permittivity (epsilon(r)) and breakdown strength (E-b) in polymer dielectrics is a challenging task. This study demonstrates that the pi-conjugated comonomer (MHT) can enhance both epsilon(r) and E-b in linear poly(methyl methacrylate) (PMMA) copolymers. Various PMMA-based films were prepared to investigate the effects of different structures and modification methods on the dielectric and energy storage properties. The results show that the random copolymer P(MMA-co-MHT) achieves a maximum epsilon(r) of 5.8 at 1 kHz and a discharge energy density of 15.00 J cm(-3) at 872 MV m(-1), which is 165% higher than pure PMMA.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
Aiyeshah Alhodaib
Summary: The electronic, mechanical, and transport properties of In-substituted GaAs were investigated using the TB-mBJ potential, BoltzTraP code, and Charpin tensor matrix analysis. The study showed that increasing the In concentration led to changes in directional symmetry, reduced bandgap, decreased electrical conductivity, and increased Seebeck coefficient. Additionally, the elastic moduli and thermal conductivity decreased as well.
Review
Chemistry, Physical
K. Snini, M. Akyol, M. Ellouze, L. El Mir, F. Ghribi, A. Ekicibil
Summary: The study focuses on preparing Pr0.67Ba0.22Sr0.11Mn0.975Ni0.025O3 compound and analyzing its electrical properties and metal-semiconductor transitions using impedance spectroscopy and conductivity analysis. The material is found to be suitable for high frequency energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Optics
K. Ribag, M. Houmad, R. Ahl Laamara, A. Benyoussef, A. El Kenz
Summary: In this study, the electronic, optical, and electrical properties of tetragonal Boron Nitride (t-BN) under different strains were investigated. The calculations showed that the band gap and electrical conductivity of t-BN significantly increased under compressive stress, indicating better electronic properties and higher electrical conductivity. Moreover, it was found that the semiconductor property in t-BN transformed into metallic. Therefore, this innovative nanomaterial t-BN has the potential to enhance the efficiency of solar cells.
Article
Mathematics, Applied
Jordi Tiana-Alsina, Cristina Masoller
Summary: This study analyzes experiments with two mutually optically coupled lasers and finds that due to coupling delay, the intensity time traces show well-defined spikes, with one laser's spike occurring shortly before or after the other laser's spike. By analyzing the coincidence of spike times, event synchronization measures effectively quantify spike synchronization, allowing for the determination of the leading and lagging lasers.
Article
Chemistry, Physical
Konstantin M. Morozov, Piotr Pander, Larissa G. Franca, Alexey Belonovski, Elizaveta Girshova, Konstantin A. Ivanov, Daniil A. Livshits, Nikita Selenin, Galia Pozina, Andrew P. Monkman, Mikhail A. Kaliteevski
Summary: The properties of ultrastrongly coupled Tamm plasmon cavities filled with DPAVBi organic material were studied, confirming their operation in the ultrastrong coupling regime and the agreement between experimental results and theoretical models.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Nanoscience & Nanotechnology
Na Zhao, Zhihua Ou, Jian Chen, Chunjuan Tang, Dongsheng Yu
Summary: In this study, Co3O4 nanocrystals were successfully synthesized using a simple and facile method, and characterized by multiple techniques. As an anode material in lithium ion batteries, the Co3O4 nanocrystals exhibited excellent electrochemical properties, which could be attributed to their nanoscaled particle size, high crystallinity, and high specific surface area.
SCRIPTA MATERIALIA
(2024)
Article
Chemistry, Multidisciplinary
Sang Eun Yoon, Yongjin Kim, Hyeongjun Kim, Hyo-Geun Kwon, Unjeong Kim, Sang Yeon Lee, Ju Hyun Park, Hyungtak Seo, Sang Kyu Kwak, Sang-Wook Kim, Jong H. Kim
Summary: The authors achieved metallic properties from semiconducting Cu-Fe-S colloidal nanocrystal (NC) solids through cation exchange method. By efficiently generating charge carriers onto a semiconducting Cu-S NC template via minimal Fe exchange, they realized an unprecedentedly high electrical conductivity. The obtained NC films exhibited metallic behaviour with high electrical conductivity, making them suitable for various optoelectronic devices.
Article
Physics, Multidisciplinary
Junho Choi, Matthias Florian, Alexander Steinhoff, Daniel Erben, Kha Tran, Dong Seob Kim, Liuyang Sun, Jiamin Quan, Robert Claassen, Somak Majumder, Jennifer A. Hollingsworth, Takashi Taniguchi, Kenji Watanabe, Keiji Ueno, Akshay Singh, Galan Moody, Frank Jahnke, Xiaoqin Li
Summary: This study explores how the twist angle between two monolayers in van der Waals heterostructures can control the exciton dynamics, affecting the interlayer exciton lifetimes significantly. Theoretical models separate two mechanisms influencing the radiative lifetimes and predict distinct temperature dependence of interlayer exciton lifetimes at different twist angles.
PHYSICAL REVIEW LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Erman Erdogan, Ayca Kiyak Yildirim
Summary: In this study, PbS and Zn-doped PbS films were electrodeposited on ITO substrates and analyzed for their structural, optical, and morphological properties. X-ray diffraction revealed that all films had a polycrystalline structure. The thickness of the films and their optical properties were determined using spectroscopic ellipsometry, with thickness values ranging from 245 nm to 232 nm and optical band gaps between 1.95 eV and 2.07 eV. Scanning Electron Microscopy and Energy-Dispersive X-ray Spectroscopy provided surface morphologies and elemental analyses of the films, respectively. The investigation concluded that Zn doping had a healing effect on the films' structural, optical, and surface properties.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Physics, Condensed Matter
Shivani Gohri, Jaya Madan, Rahul Pandey
Summary: This study improves the efficiency of SnS-based solar cells by implementing the glancing angle deposition approach and introducing a CZTSSe layer. The findings offer valuable insights for enhancing the design of SnS-based solar cells and making them more efficient.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Mahboubeh Yeganeh, Davoud Vahedi Fakhrabad
Summary: The lattice thermal conductivity of CdO monolayer was investigated, and it was found to be lower than that of bulk CdO due to the lower phonon lifetime and phonon group velocity. As a result, the monolayer exhibits higher thermoelectric efficiency compared to the bulk counterpart.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Shivam Srivastava, Prachi Singh, Anjani K. Pandey, Chandra K. Dixit
Summary: In this research paper, a novel equation of state (EOS) based on finite strain theories is proposed for predicting the thermo elastic properties of various materials. Extensive analysis and comparison with existing models and experimental data demonstrate the validity and effectiveness of the proposed EOS in capturing the unique thermodynamic behavior of nanomaterials, bulk metallic glasses, and superconductors. This research is of great importance in the fields of materials science, nanotechnology, and condensed matter physics.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Subrata Das, Sanjoy Kr Mahatha, Konstantin Glazyrin, R. Ganesan, Suja Elizabeth, Tirthankar Chakraborty
Summary: In this study, we investigated the structural evolution of Tb2Ti2O7 under external pressure and temperature, and confirmed the occurrence of an isostructural phase transition beyond 10 GPa pressure. This transition leads to changes in lattice parameters and mechanical properties, which can be understood in terms of localized rearrangement of atoms.
SOLID STATE COMMUNICATIONS
(2024)
Article
Physics, Condensed Matter
Hamze Mousavi
Summary: It has been found that undoped graphene sheet has zero states at the Fermi energy level, making it difficult for Cooper pairing to occur in the superconductive state. However, T-graphene, with physical properties similar to graphene, exhibits metallic behavior and has available electron states near the Fermi level. The gap equation for the s-wave superconductive state is derived based on the attractive Hubbard model and the Bogoliubov de Gennes equation for this two-dimensional metallic system. It is found that a nonzero critical temperature, τ, exists for different levels of electron-electron interaction, ǫ. τ has higher values when the system has electronic half band-filling, but decreases when the system does not have half band-filling. However, τ vanishes when ǫ becomes small enough near the band edges.
SOLID STATE COMMUNICATIONS
(2024)