Articoli di riviste: "2D FTMS"

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Dowell, James A., William Vander Heyden e Lingjun Li. "Rat Neuropeptidomics by LC−MS/MS and MALDI−FTMS: Enhanced Dissection and Extraction Techniques Coupled with 2D RP-RP HPLC". Journal of Proteome Research 5, n. 12 (dicembre 2006): 3368–75. http://dx.doi.org/10.1021/pr0603452.

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Kim, Junghyun, Jihyun Park, Wonyoung Yoo e Jinsoo Seo. "Chroma Feature Abstraction using Multiscale 2D-FTM and N-gram for Cover Song Search". KIISE Transactions on Computing Practices 24, n. 6 (30 giugno 2018): 318–23. http://dx.doi.org/10.5626/ktcp.2018.24.6.318.

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Hafiyyan, Qalbi, Azwa Nirmala, Murad MS, Sumiyattinah Sumiyattinah, Vivi Bachtiar e Muhammad Yusuf Yusuf. "Application of Finite Difference Method in Simulating 2D Partial Dam-break Flow with an Obstacle". Indonesian Journal of Multidisciplinary Science 2, n. 12 (26 settembre 2023): 4181–90. http://dx.doi.org/10.55324/ijoms.v2i12.609.

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A numerical model capable of simulating the dam-break flow is required to reduce the detrimental impact on the downstream area of the dam. This study aims to see how the characteristics and patterns of flow due to partial dam failure and the presence of an obstacle in the floodplain. In real life, the obstacle can be considered as a building. In this research, a model based on the FTCS method was developed with the addition of a Hansen numerical filter. This model is known as the FTCS-Hansen model. The Hansen filter in this study is used to enhance the numerical of the model and reduce oscillations due to shock waves. The FTCS-Hansen model simulates a 2D partial dam break with an obstacle. The simulation results are compared with other simulation results from previous studies. This comparison intends to see the performance of the FTCS-Hansen model. The results show good agreement between the FTCS-Hansen model and other numerical models. In addition, the complicated dam-break flow characteristics due to the presence of an obstacle (reflection and diffraction) can also be well captured by the FTCS-Hansen model.

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Mellivera, Avis, Khilmi Zain, Mohammad Bagus Adityawan, Dhemi Harlan, Mohammad Farid e Bagus Pramono Yakti. "Development of FTCS Artificial Dissipation for Dam Break 2D Modelling". Jurnal Teknik Sipil 27, n. 1 (14 aprile 2020): 1. http://dx.doi.org/10.5614/jts.2020.27.1.1.

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Wang, Tao, Yinzhou Yan, Liye Zhu, Qian Li, Jing He, Xiaoxia Zhang, Xi Li, Xiaohua Zhang, Yongman Pan e Yue Wang. "High-Performance Flexible Transparent Electrodes Fabricated via Laser Nano-Welding of Silver Nanowires". Crystals 11, n. 8 (21 agosto 2021): 996. http://dx.doi.org/10.3390/cryst11080996.

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Silver nanowires (Ag-NWs), which possess a high aspect ratio with superior electrical conductivity and transmittance, show great promise as flexible transparent electrodes (FTEs) for future electronics. Unfortunately, the fabrication of Ag-NW conductive networks with low conductivity and high transmittance is a major challenge due to the ohmic contact resistance between Ag-NWs. Here we report a facile method of fabricating high-performance Ag-NW electrodes on flexible substrates. A 532 nm nanosecond pulsed laser is employed to nano-weld the Ag-NW junctions through the energy confinement caused by localized surface plasmon resonance, reducing the sheet resistance and connecting the junctions with the substrate. Additionally, the thermal effect of the pulsed laser on organic substrates can be ignored due to the low energy input and high transparency of the substrate. The fabricated FTEs demonstrate a high transmittance (up to 85.9%) in the visible band, a low sheet resistance of 11.3 Ω/sq, high flexibility and strong durability. The applications of FTEs to 2D materials and LEDs are also explored. The present work points toward a promising new method for fabricating high-performance FTEs for future wearable electronic and optoelectronic devices.

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Putri, Putu Indah Dianti, Rifqi Fauzan Iskandar, Mohammad Bagus Adityawan, Hadi Kardhana e Dian Indrawati. "2D Shallow Water Model for Dam Break and Column Interactions". Journal of the Civil Engineering Forum 6, n. 3 (16 settembre 2020): 237. http://dx.doi.org/10.22146/jcef.54307.

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Dam break causes disastrous effects on the surrounding area, especially at the downstream, therefore, there is a need for accurate and timely predictions of dam break propagation to prevent both property damage and loss of life. This study aimed to determine the movement of dam-break flow in the downstream area by solving the Shallow Water Equations (SWE) or Saint Venant Equations which are based on the conservation of mass and momentum derived from Navier Stokes equation. The model was generated using a finite difference scheme which is the most common and simplest method for dam-break modeling while Forward Time Central Space (FTCS) numerical scheme was applied to simulate two-dimensional SWE. Moreover, the accuracy of the numerical model was checked by comparing its results with the analytic results of one-dimensional cases and a relatively small value of error was found in comparison to the analytic models as indicated with the RMSE values close to 0. The numerical to the two-dimensional models were also compared to a simple dam break in a flume and dam break with column interactions and the wave propagation in both cases was observed to become very close at a certain time. The model, however, used numerical filter (Hansen) to reduce the oscillations or numerical instability. The simulation and analysis, therefore, showed the ability of the numerical scheme of FTCS to resolve both cases of the simple dam break and dam break with column interactions in the Two-dimensional Shallow Water.

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Abu Bakar, Zulzikry Hafiz, Jean-Pierre Bellier, Wan Zurinah Wan Ngah, Daijiro Yanagisawa, Ken-ichi Mukaisho e Ikuo Tooyama. "Optimization of 3D Immunofluorescence Analysis and Visualization Using IMARIS and MeshLab". Cells 12, n. 2 (4 gennaio 2023): 218. http://dx.doi.org/10.3390/cells12020218.

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The precision of colocalization analysis is enhanced by 3D and is potentially more accurate than 2D. Even though 3D improves the visualization of colocalization analysis, rendering a colocalization model may generate a model with numerous polygons. We developed a 3D colocalization model of FtMt/LC3 followed by simplification. Double immunofluorescence staining of FtMt and LC3 was conducted, and stacked images were acquired. We used IMARIS to render the 3D colocalization model of FtMt/LC3 and further processed it with MeshLab to decimate and generate a less complex colocalization model. We examined the available simplification algorithm using MeshLab in detail and evaluated the feasibility of each procedure in generating a model with less complexity. The quality of the simplified model was subsequently assessed. MeshLab's available shaders were scrutinized to facilitate the spatial colocalization determination. Finally, we showed that QECD was the most effective method for reducing the polygonal complexity of the colocalization model without compromising its quality. In addition, we would recommend implementing the x-ray shader, which we found useful for visualizing colocalization. As 3D was found to be more accurate in quantifying colocalization, our study provides a novel and dependable method for rendering 3D models for colocalization analysis.

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Henry, Jerome, Nicolas Montavont, Yann Busnel, Romaric Ludinard e Ivan Hrasko. "A Geometric Approach to Noisy EDM Resolution in FTM Measurements". Computers 10, n. 3 (12 marzo 2021): 33. http://dx.doi.org/10.3390/computers10030033.

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Metric Multidimensional Scaling is commonly used to solve multi-sensor location problems in 2D or 3D spaces. In this paper, we show that such technique provides poor results in the case of indoor location problems based on 802.11 Fine Timing Measurements, because the number of anchors is small and the ranging error asymmetrically distributed. We then propose a two-step iterative approach based on geometric resolution of angle inaccuracies. The first step reduces the effect of poor ranging exchanges. The second step reconstructs the anchor positions, starting from the distances of highest likely-accuracy. We show that this geometric approach provides better location accuracy results than other Euclidean Distance Metric techniques based on Least Square Error logic. We also show that the proposed technique, with the input of one or more known location, can allow a set of fixed sensors to auto-determine their position on a floor plan.

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Yu, Kilho, Byoungwook Park, Geunjin Kim, Chang-Hyun Kim, Sungjun Park, Jehan Kim, Suhyun Jung et al. "Optically transparent semiconducting polymer nanonetwork for flexible and transparent electronics". Proceedings of the National Academy of Sciences 113, n. 50 (22 novembre 2016): 14261–66. http://dx.doi.org/10.1073/pnas.1606947113.

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Simultaneously achieving high optical transparency and excellent charge mobility in semiconducting polymers has presented a challenge for the application of these materials in future “flexible” and “transparent” electronics (FTEs). Here, by blending only a small amount (∼15 wt %) of a diketopyrrolopyrrole-based semiconducting polymer (DPP2T) into an inert polystyrene (PS) matrix, we introduce a polymer blend system that demonstrates both high field-effect transistor (FET) mobility and excellent optical transparency that approaches 100%. We discover that in a PS matrix, DPP2T forms a web-like, continuously connected nanonetwork that spreads throughout the thin film and provides highly efficient 2D charge pathways through extended intrachain conjugation. The remarkable physical properties achieved using our approach enable us to develop prototype high-performance FTE devices, including colorless all-polymer FET arrays and fully transparent FET-integrated polymer light-emitting diodes.

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Laussac, J. P., P. Demange e M. T. Cung. "Zinc in immune function: The case of thymulin (FTS-Zn) and bestatin. A 2D-NMR approach". Journal of Inorganic Biochemistry 36, n. 3-4 (agosto 1989): 257. http://dx.doi.org/10.1016/0162-0134(89)84325-9.

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Fang, Fang, e Klee Irwin. "From the Fibonacci Icosagrid to E8 (Part I): The Fibonacci Icosagrid, an H3 Quasicrystal". Crystals 14, n. 2 (31 gennaio 2024): 152. http://dx.doi.org/10.3390/cryst14020152.

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This paper introduces a new kind of quasicrystal by Fibonacci-spacing a multigrid of a certain symmetry, like H2, H3, T3, etc. Multigrids of a certain symmetry can be used to generate quasicrystals, but multigrid vertices are not a quasicrystal due to arbitrary closeness. By Fibonacci-spacing the grids, the structure transit into an aperiodic order becomes a quasicrystal itself. Unlike the quasicrystal generated by the dual-grid method, this kind of quasicrystal does not live in the dual space of the grid space. It is the grid space itself and possesses quasicrystal properties, except that its total number of vertex types are not finite and fixed for the infinite size of the quasicrystal but bounded by a slowly logarithmic growing number. A 2D example, the Fibonacci pentagrid, is given. A 3D example, the Fibonacci icosagrid (FIG), is also introduced, as well as its subsets, the Fibonacci tetragrid (FTG). The FIG can be thought of as a golden composition of five sets of FTGs. The golden composition procedure is another way to transit a random structure into aperiodic order, and the associated rotational angle is the same as the angle that resolves the geometric frustration for the H3 tetrahedral clusters. The FIG resembles another quasicrystal that is the same golden composition of five quasicrystals that are cut and projected and sliced from the E8 lattice. This leads to further exploration in mapping the FIG to the E8 lattice, and the results will be published following this paper.

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Kaesti, Edgie Yuda, Suwardi Suwardi, Ratna Widyaningsih, Muhammad Zakiy Yusrizal e Wijaya Ananditya Rifqi. "Evaluation of the Hydraulic Fracturing Implementation at Well WEA-01 Layer A3". Journal of Petroleum and Geothermal Technology 4, n. 2 (15 dicembre 2023): 1. http://dx.doi.org/10.31315/jpgt.v4i2.9834.

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The WEA-01 well produces in the A3 productive layer, talangakar formation with a layer thickness of 32.80 ft with a perforation interval of 4340.55 – 4360.24 ftMD where from petrophysical data this formation is dominated by sandstone with a permeability of 3 mD which is classified as low and a tight formation (Koesoemadinata, 1980) with 10% porosity. This is the basis for the stimulation of Hydraulic Fracturing. Hydraulic fracturing that has been implemented needs to be evaluated to find out whether the implementation has been carried out optimally or not.The method to be used in the evaluation of the WEA-01 Well hydraulic fracturing implementation includes data collection, then manual calculations and evaluation with actual data. The first evaluation was to calculate the geometry of the fracture using the 2D PKN method, the second evaluation was to calculate the price increase in the productivity index using the Cinco-ley Samaniego and Dominique method and the third evaluation was to analyze the IPR curve (Inflow Performance Relationship) before fracturing using the Darcy method and after fracturing using the Pudjo Sukarno method.Based on the results of manual fracture geometry calculations using the 2D PKN method, the results obtained are fracture length (Xf) of 200.07 ft, fracture height (hf) of 32.80 ft, and fracture width (wf) of 0.23 inch, fracture conductivity of 5094.70 mD-ft, and FCD 8.5, while the results of calculating the average permeability of formations using the Howard & Fast method obtained permeability after Hydraulic Fracturing of 15.71 mD or an increase of 5.2 times from the initial conditions and calculating the productivity index using the Cinco-Ley, Samaniego & Dominique method obtained an increase in PI prices of 3.45 times and from the determination of the IPR curve, the results obtained from the comparison of the IPR curve showed an increase in the production rate from 45.00 BOPD to 330 BOPD. Based on the increase in the fluid production rate, the implementation of Hydraulic Fracturing that has been carried out can be said to be successful.Keywords – hydraulic fracturing, fracturing fluid, proppant, fracture geometry, permeability, conductivity

13

Yang, Shuli, Lili Kang, Xiaohong Zheng, Peng Jiang e Gaofeng Zhao. "Realizing tunneling electroresistance effect in the Au/h-BN/In2Se3/Au vertical ferroelectric tunnel junction". Journal of Chemical Physics 159, n. 13 (3 ottobre 2023). http://dx.doi.org/10.1063/5.0166849.

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Two-dimensional (2D) ferroelectric tunnel junctions (FTJs) have great potential in the design of non-volatile memory devices due to the tunneling electroresistance (TER) effect and the fact that it is not constrained by critical thickness. Incorporation of 2D ferroelectric materials in realistic FTJs inevitably involves the contacts to the traditional three-dimensional (3D) metals. However, how to design the FTJs by combining the 2D ferroelectric materials with the 3D metals still needs to be studied. In this work, we design a vertical 3D FTJ by adopting the 3D metal Au as the left and right electrodes and the 2D ferroelectric material In2Se3 together with h-BN as the central scattering region. By density functional theory combined with the non-equilibrium Green’s function (NEGF) method, we demonstrate that the h-BN intercalation with a large bandgap plays the role of good “insulator,” which breaks the symmetry of the left and right electrodes. As a result, we obtain the TER ratio of about 170%, and it can be further improved to about 1200% if two layers of In2Se3 (2L-In2Se3) are adopted as the tunneling barrier layer. Our results provide another way for the design and application of ferroelectric memory devices based on 2D ferroelectric materials.

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Han, Ziqi, Chun-sheng Liu, Xiaohong Zheng e Lei Zhang. "Giant tunneling electroresistance in 2D bilayer-In₂Se₃-based out-of-plane ferroelectric tunnel junction". Physical Chemistry Chemical Physics, 2023. http://dx.doi.org/10.1039/d3cp01942j.

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Ferroelectric tunnel junctions (FTJs) have great potential in nonvolatile memory devices and have been extensively studied in recent years. Compared with conventional FTJs based on perovskite-type oxide materials as the...

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Chen, Weipeng, Ruijia Zhang, Xia Yang, Hongyu Wang, Hanjun Yang, Xiaotian Hu e Shaohua Zhang. "1D:2D Structured AgNW:MXene Composite Transparent Electrode with High Mechanical Robustness for Flexible Photovoltaics". Journal of Materials Chemistry C, 2022. http://dx.doi.org/10.1039/d2tc01178f.

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Flexible transparent electrodes (FTEs) are essential sections for wearable and other flexible optoelectronic devices. The application of traditional indium tin oxide (ITO) electrodes in flexible devices is limited by its...

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Liu, Zifang, Pengfei Hou, Lizhong Sun, Evgeny Y. Tsymbal, Jie Jiang e Qiong Yang. "In-plane ferroelectric tunnel junctions based on 2D α-In2Se3/semiconductor heterostructures". npj Computational Materials 9, n. 1 (13 gennaio 2023). http://dx.doi.org/10.1038/s41524-022-00953-x.

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AbstractFerroelectric tunnel junctions (FTJs) have great potential for application in high-density non-volatile memories. Recently, α-In2Se3 was found to exhibit robust in-plane and out-of-plane ferroelectric polarizations at a monolayer thickness, which is ideal to serve as a ferroelectric component in miniaturized electronic devices. In this work, we design two-dimensional van der Waals heterostructures composed of an α-In2Se3 ferroelectric and a hexagonal IV–VI semiconductor and propose an in-plane FTJ based on these heterostructures. Our first-principles calculations show that the electronic band structure of the designed heterostructures can be switched between insulating and metallic states by ferroelectric polarization. We demonstrate that the in-plane FTJ exhibits two distinct transport regimes, tunneling and metallic, for OFF and ON states, respectively, leading to a giant tunneling electroresistance effect with the OFF/ON resistance ratio exceeding 1 × 104. Our results provide a promising approach for the high-density ferroelectric memory based on the 2D ferroelectric/semiconductor heterostructures.

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"Development of A 2D Numerical Model for Pollutant Transport using FTCS Scheme and Numerical Filter". Makara Journal of Technology 25, n. 3 (30 dicembre 2021). http://dx.doi.org/10.7454/mst.v25i3.3966.

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Nag, Tanay, e Bitan Roy. "Anomalous and normal dislocation modes in Floquet topological insulators". Communications Physics 4, n. 1 (12 luglio 2021). http://dx.doi.org/10.1038/s42005-021-00659-4.

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AbstractElectronic bands featuring nontrivial bulk topological invariant manifest through robust gapless modes at the boundaries, e.g., edges and surfaces. As such this bulk-boundary correspondence is also operative in driven quantum materials. For example, a suitable periodic drive can convert a trivial insulator into a Floquet topological insulator (FTI) that accommodates nondissipative dynamic gapless modes at the interfaces with vacuum. Here we theoretically demonstrate that dislocations, ubiquitous lattice defects in crystals, can probe FTIs as well as unconventional π-trivial insulator in the bulk of driven quantum systems by supporting normal and anomalous modes, localized near the defect core. Respectively, normal and anomalous dislocation modes reside at the Floquet zone center and boundaries. We exemplify these outcomes specifically for two-dimensional (2D) Floquet Chern insulator and px + ipy superconductor, where the dislocation modes are respectively constituted by charged and neutral Majorana fermions. Our findings should be, therefore, instrumental in probing Floquet topological phases in the state-of-the-art experiments in driven quantum crystals, cold atomic setups, and photonic and phononic metamaterials through bulk topological lattice defects.

Articoli di riviste sul tema "2D FTMS"

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