Article
Physics, Multidisciplinary
Lucia Duca, Naoto Mizukami, Elia Perego, Massimo Inguscio, Carlo Sias
Summary: In this study, the observation of orientational melting in a two-dimensional crystal is reported. The nonuniversality of this phenomenon is demonstrated, and novel coexisting configurations are created. This research is important for studying changes of configurations in two-dimensional mesoscopic systems, as well as for exploring quantum phenomena in ensembles of delocalized ions.
PHYSICAL REVIEW LETTERS
(2023)
Article
Chemistry, Physical
Feifei Wang, Haotian Lu, Hanbing Zhu, Lu Wang, Zihui Chen, Chunpeng Yang, Quan-Hong Yang
Summary: In this study, N, S-doped carbon quantum dots (NSQDs) were introduced as an additive to mitigate interfacial concentration gradient and achieve uniform Zn deposition in aqueous zinc batteries. The NSQD layer with reduced oxygen-containing groups formed Zn-O bonds on the Zn surface, providing nucleation sites for Zn ions. The negative charge of the NSQD layer decreased the ion concentration gradient and uniformized the electric field distribution near the Zn-electrolyte interfaces, facilitating dendrite-free Zn deposition. The Zn metal anode exhibited good rate performances and the assembled pouch full cell showed excellent cycling stability.
ENERGY STORAGE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Abdullah S. Abbas, Emma Vargo, Vida Jamali, Peter Ercius, Priscilla F. Pieters, Rafaela M. Brinn, Assaf Ben-Moshe, Min Gee Cho, Ting Xu, A. Paul Alivisatos
Summary: Extensive prior work has shown that colloidal inorganic nanocrystals coated with organic ligand shells can form superlattices with different crystal structures and packing densities. Recent studies have focused on the assembly of high-symmetry nanocrystals, while this research explores the assembly of elliptically faceted CdSe/CdS core/shell nanocrystals. The results reveal an unexpectedly well-ordered translational superlattice characterized by an orientational glass phase, providing insights into the formation and potential applications of such phase.
Article
Thermodynamics
Changzheng Li, Zheng Liu, Yaofeng Wang, Asad Ali, Zhi Qun Tian
Summary: This paper proposes an energy harvesting system based on charged conical nanopore and investigates the influence of salinity and temperature gradient on the maximum output power and energy conversion efficiency. The results show that the enhancement of negative temperature difference has a more significant effect on the maximum output power, and the system achieves a maximum optimal value of 0.22 pW.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Lijie Ding, Robert A. Pelcovits, Thomas R. Powers
Summary: The study shows that at low values of chiral coupling, rod-like objects only twist near the edge of the membrane, while at high values of chiral coupling they twist everywhere forming a cholesteric state. When the cost of tilt is high, the emergence of a cholesteric state at high values of the chiral coupling is accompanied by the bending of the membrane into a saddle shape, while increasing edge tension tends to flatten the membrane.
Article
Multidisciplinary Sciences
Anton Gradisek, Tomaz Apih, Maria J. Beira, Carlos Cruz, Susete N. Fernandes, Helena M. Godinho, Pedro J. Sebastiao
Summary: This study used NMR relaxometry to observe dynamic clusters with short-range orientational order in liquids. These clusters exhibit local order driven by interactions between molecules. In liquid crystal, the size of these clusters was observed to increase during the phase transition.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Environmental
Shengchao Rui, Changjian Wang, Shusheng Guo, Rulin Jing, Quan Li
Summary: The study investigated the effects of different hydrogen concentration gradients on flame behavior and overpressure, revealing that for fuel-lean hydrogen-air mixtures, the maximum overpressure in homogeneous mixtures is larger than that in inhomogeneous mixtures, while the opposite is true for fuel-rich mixtures.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2021)
Article
Physics, Particles & Fields
Shavani Naicker, Sunil D. Maharaj, Byron P. Brassel
Summary: In this paper, the field equations for a charged gravitating perfect fluid in Einstein-Gauss-Bonnet gravity are derived in all spacetime dimensions. The static and spherically symmetric spacetime leads to a charged condition of pressure isotropy, which is a second-order Abel differential equation. It is shown that this equation can be simplified to a first-order, nonlinear canonical differential equation in higher dimensions. The canonical form allows for an exact solution generating algorithm, resulting in implicit solutions by choosing potentials and the electromagnetic field. An exact solution to the canonical equation is found, which corresponds to the neutral model previously discovered. Additionally, three new classes of solutions are obtained by placing constraints on the canonical differential equation, without specifying gravitational potentials and electromagnetic field. When the canonical form is not applicable, other classes of exact solutions are presented using elementary and special functions (the Heun confluent functions).
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Chemistry, Physical
Qiang Chen, Jin Huang, Gang Lei, Tianxiang Wang, Jinliang Chen, Wenhu Han
Summary: This study investigates the behavior of detonations in nonhomogeneous medium through high-resolution simulations. The results show that the characteristics of detonations in nonuniform medium are controlled by the coupling role of gradient and confinement. The width of the computational domain determines the propagation mode of the detonation, with wider domains resulting in galloping propagation and narrower domains emphasizing the role of gradient steepening.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Chun Huang, Matthew D. Wilson, Kosuke Suzuki, Enzo Liotti, Thomas Connolley, Oxana Magdysyuk, Stephen Collins, Frederic Van Assche, Matthieu N. Boone, Matthew C. Veale, Andrew Lui, Rhian-Mair Wheater, Chu Lun Alex Leung
Summary: The performance of Li+ ion batteries is affected by the steep Li+ ion concentration gradients in the electrodes. Current understanding of Li+ ion diffusion in electrodes is mainly based on computational modeling, and there are few experimental methods to visualize the Li+ ion concentration distribution in typical battery configurations. In this study, an interrupted in situ correlative imaging technique was developed to map the chemical and physical properties of an electrode inside a working coin cell battery in 3D.
Article
Engineering, Chemical
Chunyang Fan, Li Cao, Chao Yang, Qianxiang Xiao, Xinda You, Xiaoyao Wang, Yan Kong, Hong Wu, Yawei Liu, Zhongyi Jiang
Summary: This study fabricates COF membranes with one-dimensional charged nanochannels using ionic COF nanosheets decorated with sulfonic acid groups, and finds that the membrane exhibits enhanced proton conductivity and suppressed methanol permeability. All-atomistic dynamics simulations suggest that the low and nearly constant methanol permeability of the COF membrane is due to the diffusio-osmotic effect arising from the charged nanochannels.
JOURNAL OF MEMBRANE SCIENCE
(2022)
Article
Computer Science, Interdisciplinary Applications
Haizhou Yang, Seong Hyeon Hong, Gang Wang, Yi Wang
Summary: This paper introduces a multi-fidelity reduced-order model (MFROM) and a global optimization method for the simulation and design of microfluidic concentration gradient generators (mu CGGs). The method divides the process into two stages and uses proper orthogonal decomposition and a kriging model to bridge the fidelity gap. The results show that the MFROM-based optimization produces accurate designs with a significantly reduced computation time.
ENGINEERING WITH COMPUTERS
(2023)
Article
Multidisciplinary Sciences
Debashis Majhi, Sergey V. Dvinskikh
Summary: Ionic liquid crystals exhibit liquid-crystalline behavior and are stabilized by electrostatic, hydrogen bonding, and van der Waals interactions. Dicationic ionic liquid crystals, with two single-charged ions linked by a spacer, display similar local order and alignment as monocationic salts. Bond order parameters in dicationic smectic phase are lower compared to double-chain monocationic analogs, indicating reduced van der Waals forces.
SCIENTIFIC REPORTS
(2021)
Article
Mechanics
Prathmesh M. Vinze, Akash Choudhary, S. Pushpavanam
Summary: Janus particles self-propel by generating local tangential concentration gradients, driven by chemical asymmetry along their surfaces. Theoretical framework and parameter space distribution of Janus particle motion under externally imposed linear concentration gradients are studied.
Article
Chemistry, Multidisciplinary
Bing Yao, Shabab Hussain, Zhizhen Ye, Xinsheng Peng
Summary: Ion-selective membranes are promising candidates for osmotic energy harvesting, but the fabrication of highly selective membranes is a major challenge. Metal-organic frameworks (MOFs) with well-defined nanochannels along functional charged groups can help overcome this problem. In this study, dense sodium polystyrene sulfonate (PSS) incorporated MOFs composite membranes (PSS@MOFs) were developed on a porous anodic aluminum oxide (AAO) membrane through in situ anodic electrodeposition. The sulfonated nanochannels of the PSS@MOFs composite membrane provided rapid and selective transport of cations, leading to high energy conversion efficiency and output power in osmotic energy conversion.
Article
Multidisciplinary Sciences
Leslie Valdes, Irela Perez, Louis Charles de Menorval, Ernesto Altshuler, Jon Otto Fossum, Aramis Rivera
Article
Chemistry, Multidisciplinary
E. C. dos Santos, Z. Rozynek, E. L. Hansen, R. Hartmann-Petersen, R. N. Klitgaard, A. Lobner-Olesen, L. Michels, A. Mikkelsen, T. S. Plivelic, H. N. Bordallo, J. O. Fossum
Article
Instruments & Instrumentation
Simon R. Larsen, Marie Hansteen, Barbara Pacakova, Keld Theodor, Thomas Arnold, Adrian R. Rennie, Geir Helgesen, Kenneth D. Knudsen, Heloisa N. Bordallo, Jon Otto Fossum, Leide P. Cavalcanti
JOURNAL OF SYNCHROTRON RADIATION
(2018)
Article
Multidisciplinary Sciences
Leide P. Cavalcanti, Georgios N. Kalantzopoulos, Juergen Eckert, Kenneth D. Knudsen, Jon Otto Fossum
SCIENTIFIC REPORTS
(2018)
Article
Chemistry, Physical
E. C. dos Santos, W. P. Gates, L. Michels, F. Juranyi, A. Mikkelsen, G. J. da Silva, J. O. Fossum, H. N. Bordallo
APPLIED CLAY SCIENCE
(2018)
Review
Chemistry, Physical
Ville Liljestrom, Chen Chen, Paul Dommersnes, Jon Otto Fossum, Andre H. Groeschel
CURRENT OPINION IN COLLOID & INTERFACE SCIENCE
(2019)
Article
Chemistry, Applied
Simon R. Larsen, Leander Michels, Everton C. dos Santos, Marcella C. Berg, Will P. Gates, Laurie P. Aldridge, Tilo Seydel, Jacques Ollivier, Mark T. F. Telling, Jon Otto Fossum, Heloisa N. Bordallo
MICROPOROUS AND MESOPOROUS MATERIALS
(2020)
Article
Chemistry, Multidisciplinary
Paulo H. Michels-Brito, Antonio Malfatti-Gasperini, Lina Mayr, Ximena Puentes-Martinez, Romulo P. Tenorio, Daniel R. Wagner, Kenneth D. Knudsen, Koiti Araki, Rafael G. Oliveira, Josef Breu, Leide P. Cavalcanti, Jon Otto Fossum
Summary: In this study, unmodified clay nanosheets were found to be able to localize at air-deionized-water interfaces, offering new possibilities for research on novel clay interface materials. By combining different experimental methods, the dynamic equilibrium of clay nanosheet organization at the interface was revealed.
Article
Chemistry, Multidisciplinary
Paul Monceyron Roren, Kristoffer W. B. Hunvik, Vegard Josvanger, Ole Tore Buseth, Jon Otto Fossum
Summary: A sample cell for powder X-ray diffraction studies with in situ applied pressure and temperature control system is demonstrated. The cell is easily portable to synchrotron facilities and commissioning tests were performed in a custom-made small/wide-angle X-ray diffractometer at the Norwegian University of Science and Technology. The temperature control system mainly focuses on achieving temperature control between -30 and 200 degrees Celsius.
JOURNAL OF APPLIED CRYSTALLOGRAPHY
(2021)
Article
Chemistry, Physical
Patrick Loch, Kristoffer William Bo Hunvik, Florian Puchtler, Sebastian Weiss, Konstanse Kvalem Seljelid, Paul Monceyron Roren, Svemir Rudic, Steinar Raaen, Kenneth Dahl Knudsen, Heloisa N. Bordallo, Jon Otto Fossum, Josef Breu
APPLIED CLAY SCIENCE
(2020)
Article
Chemistry, Physical
L. Michels, C. L. S. da Fonseca, Y. Meheust, M. A. S. Altoe, E. C. dos Santos, G. Grassi, R. Droppa, K. D. Knudsen, L. P. Cavalcanti, K. W. B. Hunvik, J. O. Fossum, G. J. da Silva, H. N. Bordallo
JOURNAL OF PHYSICAL CHEMISTRY C
(2020)
Review
Physics, Multidisciplinary
Jon Otto Fossum
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2020)
Article
Physics, Multidisciplinary
Ana C. Trindade, Miguel Carreto, Geir Helgesen, Kenneth D. Knudsen, Florian Puchtler, Josef Breu, Susete Fernandes, Maria Helena Godinho, Jon Otto Fossum
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS
(2020)
Article
Physics, Fluids & Plasmas
Leander Michels, Yves Meheust, Mario A. S. Altoe, Everton C. dos Santos, Henrik Hemmen, Roosevelt Droppa Jr, Jon O. Fossum, Geraldo J. da Silva
Article
Chemistry, Physical
Alexander Mikkelsen, Paul Dommersnes, Zbigniew Rozynek, Azarmidokht Gholamipour-Shirazi, Marcio da Silveira Carvalho, Jon Otto Fossum
Article
Chemistry, Physical
Yiping Yin, Zhe Wang, Hua Zou
Summary: This study presents a novel method for preparing dimpled polymer-silica nanocomposite particles using interfacial swelling-based seeded polymerization. The optimized conditions allow for a relatively high percentage of dimpled particles to be achieved.
Article
Chemistry, Physical
Brenden D. Hoehn, Elizabeth A. Kellstedt, Marc A. Hillmyer
Summary: Porous materials with nanometer-scale pores have important applications as nanoporous membranes. In this study, ABA triblock copolymers were used as precursors to produce nanoporous polymeric membranes (NPMs) in thin film form by degrading the end blocks. Polycyclooctene (PCOE) NPMs with tunable pore sizes were successfully prepared using solvent casting technique. Oxygen plasma etching was employed to improve the surface porosity and hydrophilicity of the membranes. This study provides a straightforward method to produce tough NPMs with high porosity and hydrophilic surface properties.
Article
Chemistry, Physical
Vladislav S. Petrovskii, Stepan I. Zholudev, Igor I. Potemkin
Summary: This article investigates the behavior of linear and ring polypeptide chains in aqueous solution and explores the properties of the complexes formed by these chains with oppositely charged surfactants. The results demonstrate that the complexes of linear supercharged unfolded polypeptides and the corresponding surfactants exhibit impressive adhesive properties.
Article
Chemistry, Physical
Merve Cevik, Serkan Dikici
Summary: Cardiovascular diseases are a leading cause of death globally, and vascular grafts are a promising treatment option. This study focuses on tissue-engineered vascular grafts (TEVGs) using decellularized parsley stems as a potential biomaterial. The decellularized parsley stems showed suitable properties for TEVGs, providing a suitable environment for human endothelial cells to form a pseudo endothelium. This study showcases the potential of using parsley stems for TEVGs.
Article
Chemistry, Physical
Gustavo A. Vasquez-Montoya, Tadej Emersic, Noe Atzin, Antonio Tavera-Vazquez, Ali Mozaffari, Rui Zhang, Orlando Guzman, Alexey Snezhko, Paul F. Nealey, Juan J. de Pablo
Summary: The optical properties of liquid crystals are typically controlled by electric fields. In this study, we investigate the effects of microfluidic flows and acoustic fields on the molecular orientation and optical response of nematic liquid crystals. We identify several previously unknown structures and explain them through calculations and simulations. These findings hold promise for the development of new systems combining sound, flow, and confinement.
Article
Chemistry, Physical
Xinjun Wu, Xin Guan, Shushu Chen, Jiangpeng Jia, Chongyi Chen, Jiawei Zhang, Chuanzhuang Zhao
Summary: This research presents a novel shape memory hydrogel with a remodelable permanent shape and programmable cold-induced shape recovery behavior. The hydrogel is prepared using specific treatment methods to achieve shape fixation by heating and shape recovery by cooling. Additionally, deformable devices can be obtained by assembling hydrogel blocks with different concentrations.
Article
Chemistry, Physical
Rebecca Hengsbach, Gerhard Fink, Ulrich Simon
Summary: This study examines the properties of DNA functionalized pNipmam microgels and pure pNipmam microgels at different concentrations of sodium chloride and in PBS solutions using temperature dependent H-1-NMR measurements. The results show that DNA modification affects the volume phase transition temperature and the addition of salt and PBS further enhances this effect.
Article
Chemistry, Physical
Ningyi Li, Junhong Li, Lijingting Qing, Shicheng Ma, Yao Li, Baohui Li
Summary: This paper investigates the self-assembly behavior of colloids with competing interactions under spherical confinement and finds that different ordered structures can be formed under different sized spherical confinements. Moreover, more perforated structures are formed in smaller spheres.
