Article
Multidisciplinary Sciences
S. Al-Awfi
Summary: In this study, we theoretically demonstrate controllable two-dimensional surface optical lattices based on the evanescent electric field generated by the Hermite-Gaussian light beam. By considering the coupling of the lattice to quadrupole-active atomic transitions, we show that these topologies not only have high stability, but also deep optical potentials, allowing for dynamic trapping to be controlled by changing the design parameters of the optical construction. We expect that this study may contribute to providing another unique method for fabricating spatially complicated two-dimensional nanostructures.
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Huan Tan, Tingfeng Song, Nico Dix, Florencio Sanchez, Ignasi Fina
Summary: The piezoelectric response in doped ferroelectric HfO2 polycrystalline films has been investigated. The lack of texture in most films hinders a thorough understanding. Epitaxial films enable modification of the ferroelectric phase ratio and crystallographic orientation, providing further insight into the piezoelectric response. The magnitude of the in-plane and out-of-plane piezoelectric responses is mainly governed by the orthorhombic phase and the polar axis of the polarization along the probing direction.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Multidisciplinary Sciences
Antonello Sindona, Cristian Vacacela Gomez, Michele Pisarra
Summary: This study investigates the influence of geometry on charge density plasmon oscillations and optical absorption in silicene and germanene monolayers. It identifies flat germanene as an unprecedented two-dimensional conductor and demonstrates that its properties can be controlled by external stress or strain.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Jinfan Shao, Erjun Kan, Yan Qian, Haiping Wu
Summary: Two-dimensional intrinsic silicon nanosheets were assembled from zigzag silicene nanoribbons with different widths using first-principles theory, and it was found that all the nanosheets behaved as semiconductors. In a certain strain range, the nanosheets exhibited a negative Poisson's ratio. This study provides a new approach to design semiconducting silicon nanosheets.
Article
Multidisciplinary Sciences
Tianshuang Ren, Miaocong Li, Xikang Sun, Lele Ju, Yuan Liu, Siyuan Hong, Yanqiu Sun, Qian Tao, Yi Zhou, Zhu-An Xu, Yanwu Xie
Summary: The recent discovery of superconductivity at the interfaces between KTaO3 and EuO (or LaAlO3) has led to the development of the second generation of oxide interface superconductors. This superconductivity is strongly influenced by the surface plane of KTaO3, unlike the previous LaAlO3/SrTiO3 interface, and the superconducting transition temperature Tc has been increased significantly. By utilizing ionic liquid (IL) gating, superconductivity has been achieved at the KTaO3(111) and KTaO3(110) surfaces, with Tc values of up to 2.0 K and 1.0 K respectively. This oxide-IL interface superconductivity provides clear evidence that the essential physics of KTaO3 interface superconductivity lies in the KTaO3 surfaces doped with electrons. Furthermore, the use of IL technique allows for better control and study of the intrinsic superconductivity in KTaO3.
Article
Engineering, Electrical & Electronic
Shanchuan Liang, Ti Xie, Nicholas A. A. Blumenschein, Tong Zhou, Thomas Ersevim, Zhihao Song, Jierui Liang, Michael A. A. Susner, Benjamin S. S. Conner, Shi-Jing Gong, Jian-Ping Wang, Min Ouyang, Igor Zutic, Adam L. L. Friedman, Xiang Zhang, Cheng Gong
Summary: Scientists have achieved electrical control of a two-dimensional magnetic insulator by using a thin ferroelectric polymer, which could be used to create compact devices.
NATURE ELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Son-Tung Nguyen, Pham Cuong, Nguyen Q. Cuong, Chuong Nguyen
Summary: In this study, novel 2D Janus XMoGeN2 materials were proposed and their controllable electronic features under external electric field and strain were examined using first-principles prediction. The results showed that these materials are structurally and dynamically stable indirect semiconductors, and their electronic band gap and band structures can be controlled by external electric field and strain, making them promising candidates for flexible optoelectronics and nanoelectronics.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Xilong Xu, Ting Zhang, Ying Dai, Baibiao Huang, Yandong Ma
Summary: In this study, a novel mechanism for electro-mechanical coupling is proposed, which enables reversible and nonvolatile electric field switching of the dimensions of a 2D lattice through the mediated strength of interlayer interactions in ferroelectric bilayer systems. The validity of this mechanism is demonstrated in a series of real bilayer materials through first-principles calculations. The interface differences due to polarization play a crucial role in realizing such nonvolatile electro-mechanical coupling, and the underlying physical origin is discussed. These explored phenomena and insights offer a novel avenue for the highly desired nonvolatile electric field control of mechanical strain.
NANOSCALE HORIZONS
(2023)
Article
Chemistry, Inorganic & Nuclear
Zhen Gao, Xin He, Wenzhong Li, Yao He, Kai Xiong
Summary: In this study, the electronic properties of two-dimensional Janus STiXY2 materials were investigated using first principles. It was found that the electronic characteristics of these materials can be controlled under biaxial strain and an applied electric field. The results suggest that these materials are structurally stable and have indirect band gaps, making them potential candidates for electronic devices. The STiGeP2 monolayer exhibits the highest electron carrier mobility in the x-direction, while the STiGeAs2 monolayer shows the highest electron carrier mobility in the y-direction.
DALTON TRANSACTIONS
(2023)
Article
Materials Science, Multidisciplinary
Monika Arora, Rajesh Giri, Varsha, Kirtee Kumar, Chanchal Yadav, Bhavna Vidhani, Monica Gambhir, Vinod Prasad
Summary: The energy spectrum of a 2D quantum harmonic oscillator confined by a hard wall circular cavity was studied, considering the presence of static electric and magnetic fields. Numerical computations were performed using the Bessel function basis set and the linear variational process. The effects of the circular cavity size, magnetic field, and electric field strength on energy levels, radial transition matrix elements, and thermal properties of the system were investigated. The harmonic oscillator problem is crucial for understanding natural systems undergoing deformation and exhibiting simple harmonic motion.
RESULTS IN PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Ruho Kondo
Summary: In this paper, a method for obtaining two-point direct correlation functions for desired two-dimensional lattices is proposed. The study successfully obtained DCFs for various known and nontrivial lattices through numerical experiments, demonstrating that these lattices can be simulated using a phase-field crystal with at least five modes.
Article
Physics, Multidisciplinary
Luis Antonio Gonzalez-Garcia, Hector Alva-Sanchez, Rosario Paredes
Summary: We investigated the emergence of localization in a weakly interacting Bose gas confined in quasicrystalline lattices with three different rotational symmetries: five-fold, eight-fold, and twelve-fold. By analyzing the inverse participation ratio (IPR) and the Shannon entropy in the coordinate space, we detected localization at a mean field level. These physical quantities were determined through a robust statistical study of the stationary density profiles of the interacting condensate. Localization was observed for each lattice type as a function of the potential depth. The analysis revealed a range of potential depths where the condensate density becomes localized, transitioning from partially at random lattice sites to fully in a single site. We found that localization occurs for the five-fold symmetry in the range of (6E(R), 9E(R)), while for the octagonal and dodecagonal symmetries, it occurs in the interval (12E(R), 15E(R)).
Article
Physics, Multidisciplinary
Yi-Yin Zheng, Shan-Tong Chen, Zhi-Peng Huang, Shi-Xuan Dai, Bin Liu, Yong-Yao Li, Shu-Rong Wang
Summary: We studied the stability of zero-vorticity and vortex lattice quantum droplets described by a 2D GP equation, finding the stability areas for different numbers of sites and vorticities. The relationship between mu and N for stable LQDs may violate the VK criterion, and two types of vortex LQDs with the same number of sites were found to be degenerate, while zero-vorticity LQDs were not. The offsite-centered LQDs with zero-vorticity and vortex LQDs with S = 1 were heterogeneous.
FRONTIERS OF PHYSICS
(2021)
Article
Chemistry, Physical
Ping Li, Xue-Song Zhou, Zhi-Xin Guo
Summary: This study proposes a method to efficiently control 2D magnets with a small electric field in a multiferroic heterostructure. The feasibility of this strategy is demonstrated in the bilayer CrI3/BiFeO3(001) heterostructure using first-principles calculations. The heterostructure exhibits strong magnetoelectric coupling, allowing efficient switching between ferromagnetic and antiferromagnetic states of the bilayer CrI3 by the polarized states of BiFeO3(001).
NPJ COMPUTATIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Chuan Deng, Junbo Wang, Huaming Zhu, Chaojie Xu, Xing Fan, Yinglai Wen, Peipei Huang, Haiping Lin, Qing Li, Lifeng Chi
Summary: This study successfully synthesized chiral distorted Kagome lattice and found that it is formed by multiple intermolecular hydrogen bonds. The network structures can be rationally tuned by adjusting the stoichiometric ratio of the reaction precursors, providing new strategies for synthesizing complex low-dimensional nanostructures on metal surfaces.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Gregory A. Mountain, Christine D. Keating
Article
Chemistry, Physical
Omid Jahanmahin, David J. Kirby, Benjamin D. Smith, Christopher A. Albright, Zachary A. Gobert, Christine D. Keating, Kristen A. Fichthorn
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Article
Materials Science, Multidisciplinary
Myungkoo Kang, Laura Sisken, Charmayne Lonergan, Andrew Buff, Anupama Yadav, Claudia Goncalves, Cesar Blanco, Peter Wachtel, J. David Musgraves, Alexej Pogrebnyakov, Erwan Baleine, Clara Rivero-Baleine, Theresa S. Mayer, Carlo G. Pantano, Kathleen A. Richardson
ADVANCED OPTICAL MATERIALS
(2020)
Article
Chemistry, Physical
Nicole R. Famularo, Rachel S. Hendley, Sarah J. Boehm, Xuexue Guo, Theresa S. Mayer, Michael A. Bevan, Christine D. Keating
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Review
Optics
Kathleen A. Richardson, Myungkoo Kang, Laura Sisken, Anupama Yadav, Spencer Novak, Antoine Lepicard, Isabelle Martin, Hugues Francois-Saint-Cyr, Casey M. Schwarz, Theresa S. Mayer, Clara Rivero-Baleine, Anthony J. Yee, Ilya Mingareev
OPTICAL ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Jennifer R. Miller, Cheng-Yu Wang, Christine D. Keating, Zhiwen Liu
Article
Chemistry, Physical
Nicole R. Famularo, Lei Kang, Zehua Li, Tian Zhao, Kenneth L. Knappenberger, Christine D. Keating, Douglas H. Werner
JOURNAL OF CHEMICAL PHYSICS
(2020)
Article
Multidisciplinary Sciences
Fatma Pir Cakmak, Saehyun Choi, McCauley O. Meyer, Philip C. Bevilacqua, Christine D. Keating
NATURE COMMUNICATIONS
(2020)
Article
Chemistry, Multidisciplinary
Charles D. Crowe, Albanie K. Hendrickson-Stives, Stephanie L. Kuhn, Jennifer B. Jackson, Christine D. Keating
Summary: The affordable 3D printed setup is a reliable tool for measuring the contact angle of water on various surfaces, using smart devices as the imaging basis. It provides proper backlighting, stable camera holder, and adjustable platform for samples, resulting in better quality images and improved data acquisition compared to handheld devices. Its success in teaching about water/surface interactions on different surfaces makes it a versatile tool for educators to explore various learning objectives.
JOURNAL OF CHEMICAL EDUCATION
(2021)
Article
Engineering, Electrical & Electronic
Daniel M. Fleetwood, Andrew O'Hara, Theresa Stellwag Mayer, Michael R. Melloch, Sokrates T. Pantelides
Summary: The significant increase in thermal carrier generation rates in MBE-grown p-i-n-i-p GaAs structures is attributed to deactivation of hydrogen-defect/impurity complexes during high-intensity, low-energy electron-beam irradiation. Quantum calculations suggest that deactivation of oxygen impurities is likely the cause of this degradation, with electric-field and excess-carrier-induced dehydrogenation of O-As-H complexes identified as a likely rate-limiting process.
IEEE TRANSACTIONS ON NUCLEAR SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Fatma Pir Cakmak, Allyson M. Marianelli, Christine D. Keating
Summary: Formation of coacervate-supported phospholipid membranes by hydrating a dried lipid film in the presence of coacervate droplets leads to the presence of continuous lipid bilayers around many droplets. Different coating types on coacervate droplets result in membrane diversity within the same population, showcasing various functionalities.
Article
Chemistry, Multidisciplinary
Saehyun Choi, McCauley O. Meyer, Philip C. Bevilacqua, Christine D. Keating
Summary: Research has found significant differences in interactions between RNA and adjacent phases of decapeptide-based multiphase model membraneless organelles. Single- and double-stranded RNAs preferentially accumulate in different phases within the same droplet. This discovery is important for understanding and designing functional artificial membraneless organelles.
Article
Chemistry, Physical
Andrew T. Rowland, Christine D. Keating
Summary: Changing the aqueous two-phase system can impact droplet uniformity and solute partitioning, while comparing liposomes formed by extrusion with those formed by vortexing reveals similar effectiveness in creating functional microreactors. This study expands the compositions possible for liposome-stabilized, all-aqueous emulsion droplet bioreactors, providing cost and time-saving alternatives for production.
Article
Multidisciplinary Sciences
Hadi M. Fares, Alexander E. Marras, Jeffrey M. Ting, Matthew Tirrell, Christine D. Keating
NATURE COMMUNICATIONS
(2020)