Article
Polymer Science
Javier Zamudio-Garcia, Maria V. Martinez de Yuso, Ana L. Cuevas, David Marrero-Lopez, Juana Benavente
Summary: This study investigates the effects of modifying commercial Nafion-212 thin films with dodecyltriethylammonium cation (DTA+) on their electrical resistance, elastic modulus, light transmission/reflection and photoluminescence properties. The results reveal significant changes in the electrical, mechanical and optical properties of the films, depending on the exchange process time. The inclusion of DTA(+) into the Nafion structure improved the elastic behavior and photoluminescence of the films.
Article
Energy & Fuels
Sheng-Biao Liu, Tong-Cheng Han, Li-Yun Fu
Summary: Fractured hydrate-bearing reservoirs exhibit anisotropic geophysical properties, and the joint application of seismic and electromagnetic explorations can accurately assess hydrate resources. Laboratory experiments on fractured artificial silica sandstones with evolving methane hydrate revealed that the anisotropic compressional wave velocities showed different trends parallel and perpendicular to the fractures. The overall decreasing trend of electrical conductivity was steeper parallel to the fractures during hydrate formation. The anisotropic joint properties can be employed to estimate hydrate saturation and identify hydrate distribution in fractures.
Article
Materials Science, Multidisciplinary
HaiJun Hou, WenXuan Chen, ShunRu Zhang, QinFang Zhang, LinHua Xie
Summary: The structural, electronic, optical, and elastic anisotropy of Mo5Si3C under pressure were calculated theoretically using first-principle calculations. Based on the formation enthalpy, phonon dispersion, and elastic constants, Mo5Si3C exhibited thermodynamic, dynamic, and mechanical stability in the pressure range of 0-50 GPa. The electronic properties, optical properties, and elastic properties of Mo5Si3C under different pressures were systematically studied.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Othmen Khaldi, Abdelkader Majouri, Tarek Larbi
Summary: The study investigated the impact of Zn doping on the properties of titanium dioxide, confirming that Zn doping effectively reduces the band gap, enhances optical properties, and improves photocatalytic activity. Additionally, correlations between DFT calculations and electrical response were established, and the stability of (Zn:TiO2) films was explored.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2021)
Article
Materials Science, Multidisciplinary
Mohammed S. Abu-Jafar, Vincent Leonhardi, Raed Jaradat, Ahmad A. Mousa, Samah Al-Qaisi, Nada T. Mahmoud, Ahmed Bassalat, R. Khenata, A. Bouhemadou
Summary: This study investigates the properties of Scandium Carbide compound using first-principles calculations, revealing that NaCl and NiAs structures are mechanically and dynamically stable phases, while ZB and CsCl structures are unstable. The electronic structures of all considered structures show metallic character.
RESULTS IN PHYSICS
(2021)
Review
Nanoscience & Nanotechnology
Hongyu Tang, Sergey G. Menabde, Tarique Anwar, Junhyung Kim, Min Seok Jang, Giulia Tagliabue
Summary: In this review, different strategies for photo-modulation of electrical and optical properties of graphene are surveyed, including photogating, generation of hot carriers, and thermo-optical effects. The role of nanophotonic strategies in maximizing these effects is briefly discussed, and promising fields for application of these techniques are highlighted.
Article
Materials Science, Multidisciplinary
Richa Jain
Summary: In this study, Fe3-xGdxO4 nanoparticles were synthesized using the co-precipitation method. Various characterization techniques were employed to analyze the nanoparticles, including X-Ray Diffraction (XRD), Transmission Electron Microscopy (TEM), Selected Area Electron Diffraction (SAED), FTIR, and UV-Vis spectroscopy. The results showed that gadolinium doping led to the formation of different morphologies, increased saturation magnetization, improved electrical conductivity, and enhanced elastic constants. These nanoparticles have potential applications in optoelectronic and magnetoelastic sensors.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Multidisciplinary Sciences
Guillaume Fle, Elijah Van Houten, Gaudeline Remillard-Labrosse, Greg FitzHarris, Guy Cloutier
Summary: In recent years, researchers have explored cellular biomechanical properties as a new method of oocyte selection in reproductive science. The reconstruction of viscoelastic parameter images in such materials remains a challenge. This study proposes a framework for mapping viscoelasticity at the subcellular scale and successfully applies it to live mouse oocytes.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Optics
A. El-Denglawey, A. Dahshan, K. A. Aly, Y. B. Saddeek
Summary: In this study, the elastic moduli and Poisson's ratio of xGeSe(2)-(100-x)As2Se3 glasses were estimated using ultrasonic velocities and density, while the glass transition temperature was determined through DSC thermograms. Theoretical evaluations of optical band-gap and glass-transition temperature were also conducted, showing agreement with experimental values within a certain range. Additionally, rigidity parameters such as heat of atomization, mean bond energy, cohesive energy, and overall average bond energy were estimated, and the dependence of optical band-gap on these parameters was verified. Estimates of coordination number, lone pair electrons, and cross-linking density were also made, showing an increase in optical band-gap values with increasing GeSe2 concentration. These materials have potential applications in optical absorption for solar cells and sensors.
Article
Materials Science, Ceramics
Shilpa Singh, Yogesh Sonvane, Kiril A. Nekrasov, Anatoliy Ya Kupryazhkin, Pankaj N. Gajjar, Sanjeev K. Gupta
Summary: In this study, the effect of pressure on the mechanical and optical properties of ThO2 and PuO2 was investigated using DFT + U with spin-orbit coupling. The results demonstrate that pressure has a significant impact on the mechanical and optical properties of both compounds, which is in agreement with experimental outcomes.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Physics, Applied
Yuanmao Pu, Zhibin Qiu, Bing Lv, Chuanli Fang, Yaya Lou, Wenzhong Wang, Qingping Dai
Summary: Based on density functional theory, the effect of calcium and zirconium doping on the structure, elastic, optical, Debye temperature, and piezoelectric properties of tetragonal BaTiO3 has been studied. The results show that calcium reduces the volume of BaTiO3 while zirconium increases it. Doping with calcium, zirconium, and their combination leads to an increased band gap of BaTiO3. Additionally, the co-doping of calcium and zirconium significantly enhances the piezoelectric performance of BaTiO3. This study provides theoretical guidance for improving the piezoelectric properties of BaTiO3 through doping strategies.
MODERN PHYSICS LETTERS B
(2023)
Article
Physics, Condensed Matter
Muhammad Munsif, Matiullah Shah, Zakir Ullah, Muhammad Waqar Ashraf, Muhammad Fayaz, Hessa A. Alsalmah, G. Murtaza
Summary: This study investigates the electronic, structural, optical, and elastic properties of phosphorus-containing argyrodite compounds using density functional theory. The findings provide valuable insights for future experimental and theoretical studies on these compounds.
PHYSICA B-CONDENSED MATTER
(2023)
Article
Materials Science, Ceramics
K. A. Brekhov, S. D. Lavrov
Summary: The electro-optic properties of Ba0.8Sr0.2TiO3 (BST) thin film deposited on MgO (001) substrate by rf sputtering were investigated. The film exhibited predominantly linear electro-optic behavior under static electric field, attributed to strong compressive stresses in the film. The linear electro-optic coefficient of the 1 μm thick BST film was found to be 99.4 p.m./V, showing promise for various electro-optic applications.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Priyanka Kolhar, Basavaraja Sannakki, Meenakshi Verma, S. V. Prabhakar, Mansoor Alshehri, Nehad Ali Shah
Summary: Nickel ferrite nanoparticles were prepared by using a low-temperature self-propagating solution combustion method and were doped with polyaniline. The composites were characterized using various techniques and exhibited promising electrical and optical properties, such as increased AC conductivity and shifted absorption peaks. The addition of ferrite in polyaniline led to decreased optical band gap and increased Urbach energy, making these composites suitable for applications in solar cells.
Article
Physics, Multidisciplinary
M. Guler, E. Guler, S. Ugur, G. Ugur, Z. Charifi, H. Baaziz
Summary: This study investigated the unpublished elastic, mechanical, optical, anisotropic, and magnetic properties of V2NiSb inverse Heusler alloy using the density functional theory framework. The alloy showed good mechanical stability, ductile character, and high elastic anisotropy. Additionally, it exhibited promising optical properties as a good absorber and high refractive index material in the UV region.
Review
Biochemistry & Molecular Biology
Saif Khan Alen, SungWoo Nam, Seyed A. Dastgheib
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2019)
Article
Nanoscience & Nanotechnology
Junghoon Kim, Juyoung Leem, Hong Nam Kim, Pilgyu Kang, Jonghyun Choi, Md Farhadul Haque, Daeshik Kang, SungWoo Nam
MICROSYSTEMS & NANOENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
Gang Wang, Sung-Kon Kim, Michael Cai Wang, Tianshu Zhai, Siddhanth Munukutla, Gregory S. Girolami, Peter J. Sempsrott, SungWoo Nam, Paul V. Braun, Joseph W. Lyding
Article
Chemistry, Multidisciplinary
Jangyup Son, Jong-Young Lee, Nalae Han, Jongin Cha, Jonghyun Choi, Junyoung Kwon, SungWoo Nam, Kyung-Hwa Yoo, Gwan-Hyoung Lee, Jongill Hong
Review
Materials Science, Multidisciplinary
Peter Snapp, Jin Myung Kim, Chullhee Cho, Juyoung Leem, Md Farhadul Haque, SungWoo Nam
NPG ASIA MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Peter Snapp, Chullhee Cho, Dongwon Lee, Md Farhadul Haque, SungWoo Nam, Cheol Park
ADVANCED MATERIALS
(2020)
Article
Engineering, Electrical & Electronic
Chullhee Cho, Pilgyu Kang, Amir Taqieddin, Yuhang Jing, Keong Yong, Jin Myung Kim, Md Farhadul Haque, Narayana R. Aluru, SungWoo Nam
Summary: Inserting atomically thin interlayers, such as graphene, between metal thin films and substrates can enhance the strain-resilient electrical properties of flexible electrodes, resulting in unique electrical characteristics where electrical resistance gradually increases with strain.
NATURE ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Chullhee Cho, Joeson Wong, Amir Taqieddin, Souvik Biswas, Narayana R. Aluru, SungWoo Nam, Harry A. Atwater
Summary: The study demonstrates the influence of mechanical strain on interlayer excitons in heterobilayers of molybdenum disulfide and tungsten diselenide, showing nonmonotonic behavior of exciton photoluminescence intensity with strain. This indicates the sensitivity of interlayer excitons to different directions of strain, offering higher strain tunability and new degrees of freedom compared to monolayer excitons.
Article
Chemistry, Multidisciplinary
Gus Greenwood, Jin Myung Kim, Qianlu Zheng, Shahriar Muhammad Nahid, SungWoo Nam, Rosa M. Espinosa-Marzal
Summary: Investigating the modulation of liquid molecule slippage along graphene surfaces is crucial for various applications. The greater slip lengths are found to correlate with the interfacial ordering of the liquid molecules, indicating the importance of this phenomenon.
Article
Multidisciplinary Sciences
Jingcheng Ma, Laura E. Porath, Md Farhadul Haque, Soumyadip Sett, Kazi Fazle Rabbi, SungWoo Nam, Nenad Miljkovic, Christopher M. Evans
Summary: By utilizing polydimethylsiloxane vitrimers, nanoscale-thick, perfluorinated compound-free durable hydrophobicity can be achieved, with weather resistance and self-healing capabilities. This thin film maintains excellent hydrophobicity and transparency even after scratching, cutting, and indenting, and can be deposited on various substrates through scalable dip-coating processes.
NATURE COMMUNICATIONS
(2021)
Review
Chemistry, Multidisciplinary
Jin Myung Kim, Md Farhadul Haque, Ezekiel Y. Hsieh, Shahriar Muhammad Nahid, Ishrat Zarin, Kwang-Yong Jeong, Jae-Pil So, Hong-Gyu Park, SungWoo Nam
Summary: Recent discoveries of exotic physical phenomena in quantum materials have led to increased interest in studying the effects of strain on quantum states. By altering atomic spacing and crystal symmetry, strain engineering can effectively manipulate quantum phenomena and functionalities. This review focuses on recent advances in strain-tunable quantum effects in low-dimensional quantum materials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Jingcheng Ma, Jin Myung Kim, Muhammad Jahidul Hoque, Kamila J. Thompson, SungWoo Nam, David G. Cahill, Nenad Miljkovic
Summary: The critical adhesion value G(w,c) in capillary peeling is found to be proportional to the water-film interfacial energy, allowing for quantitative thermodynamic guidelines for designing thin film interfaces. This technique shows promise for thin film transfer and nanofabrication in various fields such as flexible photovoltaics, battery materials, biosensing, translational medicine, and stretchable bioelectronics.
Review
Nanoscience & Nanotechnology
Zhichao Zhang, Yeageun Lee, Md Farhadul Haque, Juyoung Leem, Ezekiel Y. Hsieh, SungWoo Nam
Summary: Graphene plasmonics has experienced rapid growth in the past decade and has found applications in various fields. Compared to traditional materials, graphene allows for highly confined and long-lived plasmons, working in an extended wavelength range that overlaps with organic and biomolecular fingerprints. This review discusses the intrinsic properties of graphene plasmons, strategies for tuning and improving their performance, and surveys applications in biosensors, chemical sensors, and other fields.
Article
Chemistry, Multidisciplinary
Chullhee Cho, Zhichao Zhang, Jin Myung Kim, Peiwen J. Ma, Md Farhadul Haque, Peter Snapp, SungWoo Nam
Summary: This study reports the formation of a micrometer-scale freestanding wrinkled structure of 2D materials without encapsulation layers, showing enhanced light-matter interactions and spatial modulation. Compared to supported wrinkled structures, the freestanding wrinkled structures exhibit significant enhancement.