Article
Engineering, Electrical & Electronic
Shreyas Charola, Shobhit K. Patel, Juveriya Parmar, Rajendrasinh Jadeja
Summary: We proposed an angle insensitive and broadband I-shaped metasurface-based resonator to enhance absorption in the visible region. By carefully selecting the structure parameters, a wideband absorption of more than 95% from 550 to 651THz is achieved. The absorber is simple in design and insensitive to oblique incidences, making it suitable for applications in solar cells and photonics sensors.
OPTICAL AND QUANTUM ELECTRONICS
(2022)
Article
Physics, Condensed Matter
Shreyas Charola, Shobhit K. Patel, Krishna Dalsaniya, Rajendrasinh Jadeja, Truong Khang Nguyen, Vigneswaran Dhasarathan
Summary: This paper presents a wideband metasurface absorber covering the visible to ultraviolet region, achieving high absorption efficiency. By utilizing an L-shaped metasurface array and investigating the relationship between different parameters and absorption band, it achieves over 90% absorption efficiency. This ultra-thin nanostructured absorber can be used for large area photonics applications.
PHYSICA B-CONDENSED MATTER
(2021)
Article
Materials Science, Multidisciplinary
Qing Xiong, Honghao Yu, Ye Zhang, Xiangyu Gao, Changhong Chen
Summary: A broadband all-dielectric metasurface absorber was presented, with elliptical nanohole arrays embedded in the doped device layer of a silicon-on-insulator wafer, achieving enhanced near infrared absorption. Magnetic dipole resonances were found to predominantly contribute to the absorption enhancement through detailed multipole decomposition, and the large bandwidth was attributed to the superposition of multiple absorption peaks from the resonances. This simple absorber design, compatible with CMOS techniques, shows potential for broadband photodetectors of Si and even Ge, where photocarrier excitation originates from interband transitions in Ge-based photodetectors.
RESULTS IN PHYSICS
(2021)
Article
Engineering, Electrical & Electronic
Seyedeh Leila Mortazavifar, Mohammad Reza Salehi, Mojtaba Shahraki
Summary: This paper provides a theoretical design and circuit model details for a square- and circle-shaped broadband perfect ring absorber. The absorber, with a three-layered structure made up of tungsten, silica, and tungsten, achieves ultra-broadband absorption responses in different wavelength ranges. The results demonstrate the high absorption performance of the optimized design, which is related to tungsten.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Yuwei Huang, Kelson Kaj, Chunxu Chen, Zhiwei Yang, Sheikh Rubaiat Ul Haque, Yuan Zhang, Xiaoguang Zhao, Richard D. Averitt, Xin Zhang
Summary: This article introduces a thin membrane silicon metasurface absorber that achieves very high absorption over a bandwidth of approximately 500 GHz. The absorber can be used in terahertz devices such as detectors, modulators, and switches.
Article
Multidisciplinary Sciences
Nanli Mou, Bing Tang, Jingzhou Li, Hongxing Dong, Long Zhang
Summary: Researchers have developed a thermally switchable terahertz metasurface that can achieve high transmission and ultra-broadband absorption at different temperatures, making it insensitive to the incident angle. The structure is highly scalable and has potential applications in areas such as optical switching, terahertz imaging, and filtering.
SCIENTIFIC REPORTS
(2022)
Article
Optics
Baoku Wang, Ke Gai, Ruoxing Wang, Fei Yan, Li Li
Summary: This paper presents an interesting scheme of an ultra-broadband perfect terahertz (THz) absorber using a periodic-conductivity graphene metasurface. By modulating the conductivity of graphene in a periodic manner, the absorber can generate dense high-order resonance modes and achieve ultra-broadband continuous absorption. This scheme is significant for the development of broadband THz absorbers and has promising application prospects in THz stealth, imaging, and communication fields.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Physics, Applied
Junsa Du, Pin Zhang, Leilei Qiu, Xiaohui Gao, Shengxiang Huang, Longhui He, Lianwen Deng
Summary: In this study, a chaos patterned metasurface absorber (CPMA) with three strong absorption peaks and wide bandwidth was designed. The CPMA has a single-layer sandwich structure and enables continuous effective bandwidth by adjusting surface patterns. The absorption mechanisms mainly involve magnetic coupling resonance and dielectric loss.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Qinyu Qian, Peiqing Sun, Cheng Zhang, Tingting Liu, Haitao Chen, Fan Li, Liwen Cheng, Liang Zhao, Xiaofeng Li, Chinhua Wang
Summary: This paper presents the preparation and performance of an ultra-broadband metasurface perfect absorber based on TiN nanostructures, demonstrating a method to achieve high absorption in the UV to NIR region and simulating a TiN-TiO2 hot-electron photoelectric conversion system. This novel material holds promise for playing an important role in efficient hot-electron optoelectronic and photocatalytic systems.
Article
Green & Sustainable Science & Technology
Ahsan Sarwar Rana, Muhammad Zubair, Yifan Chen, Zeng Wang, Jie Deng, Muhammad Tariq Saeed Chani, Aaron Danner, Jinghua Teng, Muhammad Qasim Mehmood
Summary: We report the experimental results of a broadband metasurface solar absorber composed of refractory material chromium. The absorber exhibits high broadband absorptance and has the advantages of resistance to oxidation and corrosion, low cost, and stability at higher temperatures.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Physics, Applied
Chen Shao, Yuanzhou Zhu, Houyou Long, Chen Liu, Ying Cheng, Xiaojun Liu
Summary: In this paper, we propose a design methodology for an ultra-broadband sound absorber based on coupled-mode theory, and experimentally demonstrate its sound absorption performance. This has significant implications for acoustic engineering.
APPLIED PHYSICS LETTERS
(2022)
Article
Engineering, Multidisciplinary
Shobhit K. Patel, Juveriya Parmar, Vijay Katkar, Fahad Ahmed Al-Zahrani, Kawsar Ahmed
Summary: This study proposes a metasurface solar absorber based on the phase-changing material Ge2Sb2Te5, which shows enhanced absorption in the visible, infrared, and ultraviolet regions. Machine learning algorithms are used to predict the absorption values for different wavelengths, and experimental results demonstrate the efficacy of using a lower K value for prediction accuracy.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Dwight W. W. Swett
Summary: The potential of Fourier transform infrared (FT-IR) on a chip as a disruptive technology for downhole chemical analysis in the oil and gas industry is discussed. The cooling requirements of conventional technologies have been a critical obstacle to downhole integration. A design and numerical analysis of an uncooled miniaturized Fourier transform mid-infrared (FTMIR) spectrometer compatible with downhole thermal environments is reported, featuring a metasurface detector/source combination derived from conformal mapping contours.
IEEE SENSORS JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Qinyu Qian, Chinhua Wang, Li Fan, Liwen Cheng, Haitao Chen, Liang Zhao
Summary: This article introduces an ultra-broadband metasurface perfect absorber based on triple Mie resonances from three sets of nanopillars, suitable for visible and NIR region with high absorption and wide angular-insensitivity. Fabrication of the metasurface structures is efficiently achieved through double-beam UV interference lithography and sputter coating depositions. Experimental results show high absorption rates averaging 0.961 in the wavelength band from 400 to 1800 nm.
Article
Chemistry, Physical
Fuyin Ma, Hao Zhang, Xingzhong Wang, Chongrui Liu, Jiu Hui Wu
Summary: A space-shift phase-coherent cancellation acoustic metasurface is proposed to achieve broadband low-frequency sound absorption. By using an ultra-thin integrated structure composed of multiple units with weak absorption capability, the large-size required for low-frequency absorption is transformed into an extremely thin space layer through a space-shift design. The proposed metasurface demonstrates excellent sound absorption performance with a compact design and a thickness limitation that satisfies most equipment requirements. Rating
Article
Chemistry, Physical
Abdulkarem H. M. Almawgani, Sofyan A. Taya, Malek G. Daher, Adam R. H. Alhawari, Ilhami Colak, Shobhit K. Patel
Summary: Protein plays a crucial role in the body, so it is important to develop a sensitive and rapid biosensor to detect the concentration of protein in water. This study presents a defective ternary photonic crystal structure as a biosensor, which achieves high sensitivity for protein detection by adjusting the cavity thickness and angle of incidence. The simplicity of the suggested structure makes it suitable for large-scale production.
Article
Materials Science, Multidisciplinary
Shobhit K. Patel, Jaymit Surve, Juveriya Parmar, Khaled Aliqab, Meshari Alsharari, Ammar Armghan
Summary: We have proposed a novel approach using a refractive index sensor (RIS) with a metasurface-based slotted T-shape perfect absorber to detect ethyl butanoate in the exhaled breath of COVID-19 infected person. The optimized sensor structure achieved high sensitivity, with a maximum sensitivity of 2500 nm/RIU, and successfully detected ethyl butanoate and SARS-CoV-2. The proposed slotted T-shape RIS showed promising performance with a Q factor of 131.06, a FOM of 131.58 RIU^-1, and a detection limit of 0.0224 RIU.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
K. Vasu Babu, Sudipta Das, Syed Samser Ali, Mohammed EL Ghzaoui, Boddapati Taraka Phani Madhav, Shobhit K. Patel
Summary: This paper designs and analyzes a small size flower-shaped MIMO antenna for sub-6 GHz 5G NR frequency bands and WLAN applications. The novel approach of theory of characteristic mode analysis (TCMA) is introduced for physical insight of the designed structure. The suggested modifications in the geometry greatly increase the isolation among the patches, and the overall miniaturized dimension of the MIMO antenna is 25 x 40 mm(2).
INTERNATIONAL JOURNAL OF COMMUNICATION SYSTEMS
(2023)
Article
Multidisciplinary Sciences
Meshari Alsharari, Bo Bo Han, Shobhit K. Patel, Jaymit Surve, Khaled Aliqab, Ammar Armghan
Summary: In this research paper, an efficient diagonally symmetric infinity-shaped broadband solar absorber has been demonstrated. The structure utilizes an infinity-shaped resonator made of titanium (Ti) and gallium arsenide (GaAs) for absorption in a wideband spectrum under solar energy radiation. The absorber achieves an average absorption of 93.93% in the ultraviolet to mid-infrared regions, with bandwidths of 2800 and 1110 nm, and continuous absorption rates above 90% and 95% respectively. The absorber is also found to be angle-insensitive from 0 to 50 degrees and polarization-insensitive.
Article
Materials Science, Multidisciplinary
Hazem M. El-Hageen, Vishal Sorathiya, Sunil Lavadiya, Nandini Mehata, Vaibhav Katariya, Shobhit K. Patel, Hani Albalawi, Aadel M. Alatwi, Mohammed A. Alhartomi, Mohamed A. Mead, Yousef H. Alfaifi, Ahmed Nabih Zaki Rashed
Summary: In this study, a multilayered gold-, MgF2-, and tungsten-based ultra wideband solar absorber for the infrared frequency spectrum was proposed and numerically investigated. The structure of the absorber was studied over a wide frequency range, and the effects of different physical parameters were explored to identify the appropriate absorption spectra. The proposed structure provided high absorption for the entire solar spectrum band and can be used for designing wideband and short band solar cells and infrared absorbers.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Shobhit K. Patel, Dhruvik Agravat, Osamah Alsalman, Jaymit Surve, Sofyan A. Taya, Juveriya Parmar
Summary: Absorbing radiation from space remains a major challenge and ongoing research is being conducted in this field. This study investigates thick film structures for absorbing radiation, specifically proposing a three-layer structure that demonstrates almost similar absorption over the full spectral range. The proposed structure achieves over 98.09% absorption over the entire spectrum, with a maximum absorption of 98.36% for a wavelength range of 2800 nm and a minimum absorption of 98.09% for a 200 nm wavelength range. The structure exhibits almost 98.09% absorption with a wavelength variation of +/-0.27%. Thick film structures offer easy fabrication and require fewer materials, making them suitable for low-cost devices with applications in various technologies.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Physical
Sofyan A. Taya, Nael Doghmosh, Abdulkarem H. M. Almawgani, Ayman Taher Hindi, Ilhami Colak, Anas A. M. Alqanoo, Shobhit K. Patel, Amrindra Pal
Summary: We propose a new biosensor based on surface plasmon resonance (SPR) that can detect two commonly used buffers: Dulbecco Phosphate Buffered Saline (PBS) and TRIS-Borate-EDTA Buffer (TBE). The biosensor combines SrTiO3 (STO) and two-dimensional (2D) materials, and using STO can significantly enhance sensitivity compared to traditional SPR biosensors. Additionally, employing a single sheet of graphene (SSG) further improves sensitivity. The highest sensitivities achieved for PBS and TBE buffers are 327.023 and 320.581 degrees/RIU, respectively, using the structures SSG/35 nm Ag/14 nm STO and SSG/50 nm Ag/12 nm STO. Furthermore, the use of WSe2 as a 2D nanomaterial results in maximum sensitivity due to its lower real part of the refractive index. These findings demonstrate the effectiveness of the proposed SPR biosensor for biomedical applications.
Article
Optics
Sofyan A. Taya, Dana N. Alhamss, Abdulkarem H. M. Almawgani, Ahmad Alzahrani, Ilhami Colak, Shobhit K. Patel
Summary: This research paper presents the design and numerical investigation of a photonic crystal fiber (PCF) sensor with a hollow core for detecting Mycobacterium tuberculosis in the frequency range of 1-2 THz. The sensor demonstrates enhanced sensitivity and minimal loss, and the effective area and mode refractive index are analyzed. The PCF sensor shows great potential for various applications in chemical, gas, and biosensing.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Dana N. Alhamss, Sofyan A. Taya, Abdulkarem H. M. Almawgani, Ayman Taher Hindi, Anurag Upadhyay, Shivam Singh, Ilhami Colak, Amrindra Pal, Shobhit K. Patel
Summary: A sensor model based on photonic crystal fiber (PCF) is proposed for detecting Vibrio cholera and Escherichia coli bacteria. The simulation results show that the sensor has good performance and the PCF design is simple and easy to fabricate.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2023)
Article
Chemistry, Physical
Shobhit K. K. Patel, Osamah Alsalman, Sofyan A. A. Taya, Juveriya Parmar
Summary: Detecting cancers as early as possible is crucial to reduce fatality. In this research, a graphene-based sensor, designed with a circular ring resonator on a graphene sheet, has been optimized for high sensitivity and tunable behavior. The sensor shows a high sensitivity of 9000 nm/RIU for detecting skin cancer and good responses for the figure of merit, Q-factor, and detection limit.
Article
Multidisciplinary Sciences
Ammar Armghan, Sunil Lavadiya, Pamula Udayaraju, Meshari Alsharari, Khaled Aliqab, Shobhit K. Patel
Summary: This article introduces a sickle-shaped four-port MIMO antenna and achieves the requirements for 5G and aeronautical mobile communication applications through step-by-step optimization.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Analytical
Khaled Aliqab, Jacob Wekalao, Meshari Alsharari, Ammar Armghan, Dhruvik Agravat, Shobhit K. Patel
Summary: Researchers have developed a graphene-based sensor that can detect organic compounds with high sensitivity and accuracy, making it highly significant for ensuring food, medicine, and environmental safety.
Article
Thermodynamics
Sanket Patel, Shobhit K. Patel, Osamah Alsalman, Juveriya Parmar
Summary: The proposed solar thermal absorber is made of sandwich structure-inspired Ti-SiO2-Ti Metal-insulator-Metal material, presenting high absorption rate and nanoscale parameters. This solar absorber demonstrates excellent absorption performance across a wide range of wavelengths and features large angular and polarization-independent characteristics.
INTERNATIONAL JOURNAL OF THERMAL SCIENCES
(2024)
Article
Physics, Multidisciplinary
Abdulkarem H. M. Almawgani, Dana N. Alhamss, Sofyan A. Taya, Melad Olaimat, Ilhami Colak, Shobhit K. Patel
Summary: The transmission characteristics of a thermal tunable metallic ternary photonic crystal filter were investigated. The performance of the filter with different metals was analyzed by changing the refractive index. The results showed that the silver filter had the best transmission peaks, with sharper peaks for TE modes, and the peaks shifted towards longer wavelengths as the temperature increased.
INDIAN JOURNAL OF PHYSICS
(2023)
Article
Physics, Multidisciplinary
Sofyan A. Taya, Sahar M. AbuIbaid, Dana N. Alhamss, Shobhit K. Patel, Ilhami Colak, Abdulkarem H. M. Almawgani
Summary: A Korean team has successfully fabricated a novel metamaterial with an extremely high positive index of refraction, which they used to construct a binary photonic crystal for a thin-film silicon solar cell. The proposed back reflector not only has a wide bandwidth and high transmittance in the visible range, but also has a thin thickness. This research provides new insights for the design of optical devices and the application of photonic crystals.
INDIAN JOURNAL OF PHYSICS
(2023)
Article
Physics, Condensed Matter
A. Jbeli, N. Zeiri, N. Yahyaoui, P. Baser, M. Said
Summary: The electronic and optical properties of CdSe/ZnSe semiconductor core/shell quantum dots with hydrogenic donor impurity were investigated theoretically. The perturbation and variational methods were used to calculate the binding energy, photoionization cross-section, polarizability, and diamagnetic susceptibility of the excited impurity under various conditions. A significant stark shift in the binding energy was observed under the influence of an external electric field.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Rahat Batool, Tariq Mahmood, Sajid Mahmood, Abdul Aziz Bhatti
Summary: This study investigates the effects of alkali metal doping (Na, K, Cs) on MAPbI3 through compositional engineering. The results show that doping Na, K, and Cs can improve the phase stability, thermodynamic stability, and optical absorption of MAPbI3.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
N. A. N. M. Nor, M. A. H. Razali, W. H. A. W. K. Annuar, N. N. Alam, F. N. Sazman, N. H. M. Zaki, A. S. Kamisan, A. I. Kamisan, M. H. Samat, A. M. M. Ali, O. H. Hassan, B. U. Haq, M. Z. A. Yahya, M. F. M. Taib
Summary: This study investigates the potential of quaternary chalcogenides semiconductors as thin film solar cell absorbers using density functional theory (DFT) and density functional theory plus Hubbard U (DFT + U) approach. The results show that by applying Hubbard U terms, the electronic band gaps can be accurately predicted, providing valuable insights for finding cost-effective new thin film solar cell materials.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Ashwani Kumar, Anuj Kumar, Mohaseen S. Tamboli, Mohd Ubaidullah, J. Jayarubi, S. K. Tripathi
Summary: In this study, lead-based perovskite solar cells are replaced by bismuth-based perovskite cells to overcome their instability and toxicity. CsBi3I10 perovskite films are fabricated using a modified drop-casting process, and the effects of post-annealing temperature on the morphological, structural, and optical properties are investigated. The photovoltaic performance of the cells without a hole transport layer is also quantitatively evaluated.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yang Gao, Shu-Ming Chen, Shuo Cao, Shang-Zhou Zhang, Philippe Djemia, Qing-Miao Hu
Summary: This study investigates the phase stability, elastic modulus, and hardness of ternary nitride Ti1-xAlxN. It is found that the hardness increases with the Al content x. The cubic B1 structure is more stable for x < about 0.75, while the hexagonal structure (B4) is more stable for x > about 0.75. The composition dependent hardness and phase decomposition contribute to the convex shaped hardness curve of Ti1-xAlxN.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Fengqi Wang, Qinyan Ye, Xulin He, Kun Luo, Xiaolong Ran, Xingping Zheng, Cheng Liao, Ru Li
Summary: This report uses rigorous calculations based on density functional theory to study the piezoelectric and elastic properties of wurtzite aluminum nitride (w-AlN) with single- and co-alloying by Hf (or Zr) and Sc. The research finds that the (HfSc)0.375Al0.625N and (ZrSc)0.375Al0.625N with stable wurtzite phase have a large piezoelectric coefficient d33 of 49.18 pC/N and 47.00 pC/N, respectively. However, the piezoelectric voltage constant g33 and electromechanical coupling constant k233 of HfAlN, ZrAlN, HfScAlN, and ZrScAlN are smaller than that of ScAlN, which is attributed to the large dielectric constant epsilon 33 of Hf (or Zr) alloying samples. Furthermore, the calculations of internal parameter u and bond angle alpha elucidate the brittle-to-ductile transformation in alloying w-AlN crystal structure. Electronic structure calculations show that the bandgap decreases almost linearly with the increase of alloying concentration, and the Hf (or Zr) alloying compounds become n-type semiconductors due to the existing high-charge states.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
S. R. Athul, K. Arun, S. Swathi, U. D. Remya, Andrea Dzubinska, Marian Reiffers, Nagalakshmi Ramamoorthi
Summary: The magnetic and magnetocaloric characteristics of Ho6FeSb2 have been studied. The compound exhibits two second-order ferromagnetic transitions, enabling hysteresis-free magnetocaloric effect across a wide temperature range. The alloy has high relative cooling power and magnetoresistance, making it suitable for hysteresis-free magnetocaloric applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Reena Sharma, Neelam Hooda, Ashima Hooda, Satish Khasa
Summary: A polycrystalline double perovskite La2CoMnO6 sample was prepared and its structural, dielectric and magnetic properties were investigated. The sample exhibited complex structures and magnetic behavior, and showed good conductivity and dielectric performance. Its multi-domain magnetic structure suggests its suitability for memory device applications.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Shubha Dubey, Jisha A. Abraham, Kumud Dubey, Vineet Sahu, Anchit Modi, G. Pagare, N. K. Gaur
Summary: This study investigates the optoelectronic, thermodynamic, thermoelectric, and mechanical stability properties of RhTiP Half Heusler semiconductors. The results show that RhTiP is a non-magnetic material with confirmed mechanical stability. It is found to be an indirect-bandgap semiconductor with a good Seebeck coefficient. This study suggests that RhTiP has promising applications in the thermoelectric and optoelectronic fields.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Xun Xie, Jiong-Ju Hao, Hong-Wei Yang
Summary: This work presents a multilayer film structure that uses optical resonance to prepare highly efficient and saturated red, green, and blue transmittance colors. Numerical simulations and analysis show that the structure can produce R, G, and B colors with a purity comparable to standard RGB colors, while maintaining efficient transmission efficiency and obtaining a rich variety of structural colors. Additionally, a metallic interlayer is introduced to selectively suppress resonances in the short-wavelength region, improving the purity of the red color. The study also investigates the effect of the incidence angle on color purity and transmission efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Yueqiang Zhao
Summary: Solubility property is of great interest in chemical, physical, pharmaceutical, material, and environmental sciences. Understanding the intrinsic reason behind solubility behavior is a fascinating task. The theoretical relation between binary mutual solubility and liquid-liquid interfacial tension has been derived, where the partitioning of solute molecules between two coexisting liquid phases is determined by the transfer free energy per unit segment for a chain-like solute molecule expressed in terms of solute-solvent interfacial tension. This general theory of solubility is in good agreement with experimental results for binary mutual solubility and molar transfer free energy of solute molecules.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Osama K. M. Bashiar, R. E. Kroon, H. C. Swart, R. A. Harris
Summary: ZnO thin films with near-infrared emission were successfully fabricated using pulsed laser deposition under vacuum conditions, without the need for additional gases or implantation methods. The NIR emission was hypothesized to be caused by defects in the ZnO film due to high energy particle impacts on the sample surface.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
O. Stognei, A. Berezutskii, I. Anisimov, A. Deryabin
Summary: The influence of ZrOn matrix stoichiometry on the electrical and magnetoresistive properties of Fe-Zr-O nanocomposites has been studied. It was found that the magnetoresistive effect is not observed in composites with oxygen lack, while composites with oxygen excess show magnetoresistive effect and increased resistivity. Magnetoresistivity in composites with oxygen lack only appears after heat treatment. These results can be explained by the difference in the density of localized states in the oxide matrix of the composites and the ratio between two types of conductivity.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
Mehmet Bayirli, Aykut Ilgaz, Orhan Zeybek
Summary: The present study aims to understand the relationship between impedance characteristics and fractal behaviors. By producing neat and carbon nanotube doped composite specimens, the researchers investigated the electrical properties and surface heteromorphology using Nyquist plots and fractal analysis.
PHYSICA B-CONDENSED MATTER
(2024)
Article
Physics, Condensed Matter
M. I. Khan, Saddam Hussain, Muhamad Saleem, Fatimah Mohammed Alzahrani, Muhammad Siddique, M. S. Hassan, Allah Ditta Khalid, Munawar Iqbal
Summary: The sol-gel method was used to deposit Ti-doped MAPbBr3 films on FTO-glass substrates with different doping ratios (0%, 4%, and 6%). XRD analysis confirmed the cubic structure of all films, and the 4% Ti-doped film exhibited a large grain size, low band gap energy, and high refractive index. Solar cells fabricated using the 4% Ti-doped MAPbBr3 film showed improved performance in terms of current density, open circuit voltage, fill factor, and efficiency.
PHYSICA B-CONDENSED MATTER
(2024)
