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Book
Applied Analysis of Ordinary Differential Equations
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ISBN: 3039217275 3039217267 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Abstract

One might say that ordinary differential equations (notably, in Isaac Newton’s analysis of the motion of celestial bodies) had a central role in the development of modern applied mathematics. This book is devoted to research articles which build upon this spirit: combining analysis with the applications of ordinary differential equations (ODEs). ODEs arise across a spectrum of applications in physics, engineering, geophysics, biology, chemistry, economics, etc., because the rules governing the time-variation of relevant fields is often naturally expressed in terms of relationships between rates of change. ODEs also emerge in stochastic models—for example, when considering the evolution of a probability density function—and in large networks of interconnected agents. The increasing ease of numerically simulating large systems of ODEs has resulted in a plethora of publications in this area; nevertheless, the difficulty of parametrizing models means that the computational results by themselves are sometimes questionable. Therefore, analysis cannot be ignored. This book comprises articles that possess both interesting applications and the mathematical analysis driven by such applications.


Book
Green's functions : construction and applications
Authors: ---
ISBN: 128059764X 9786613627476 3110253399 9783110253399 311025302X 9783110253023 9781280597640 661362747X Year: 2012 Publisher: Berlin ; Boston : De Gruyter,

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Green's functions represent one of the classical and widely used issues in the area of differential equations. This monograph is looking at applied elliptic and parabolic type partial differential equations in two variables. The elliptic type includes the Laplace, static Klein-Gordon and biharmonic equation. The parabolic type is represented by the classical heat equation and the Black-Scholes equation which has emerged as a mathematical model in financial mathematics. The book is attractive for practical needs: It contains many easily computable or computer friendly representations of Green's functions, includes all the standard Green's functions and many novel ones, and provides innovative and new approaches that might lead to Green's functions. The book is a useful source for everyone who is studying or working in the fields of science, finance, or engineering that involve practical solution of partial differential equations.


Book
Symmetries in Quantum Mechanics and Statistical Physics
Author:
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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This book collects contributions to the Special Issue entitled "Symmetries in Quantum Mechanics and Statistical Physics" of the journal Symmetry. These contributions focus on recent advancements in the study of PT–invariance of non-Hermitian Hamiltonians, the supersymmetric quantum mechanics of relativistic and non-relativisitc systems, duality transformations for power–law potentials and conformal transformations. New aspects on the spreading of wave packets are also discussed.


Book
Nanoelectronic Materials, Devices and Modeling
Authors: ---
ISBN: 3039212265 3039212257 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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As CMOS scaling is approaching the fundamental physical limits, a wide range of new nanoelectronic materials and devices have been proposed and explored to extend and/or replace the current electronic devices and circuits so as to maintain progress with respect to speed and integration density. The major limitations, including low carrier mobility, degraded subthreshold slope, and heat dissipation, have become more challenging to address as the size of silicon-based metal oxide semiconductor field effect transistors (MOSFETs) has decreased to nanometers, while device integration density has increased. This book aims to present technical approaches that address the need for new nanoelectronic materials and devices. The focus is on new concepts and knowledge in nanoscience and nanotechnology for applications in logic, memory, sensors, photonics, and renewable energy. This research on nanoelectronic materials and devices will be instructive in finding solutions to address the challenges of current electronics in switching speed, power consumption, and heat dissipation and will be of great interest to academic society and the industry.

Keywords

quantum mechanical --- n/a --- neuromorphic computation --- off-current (Ioff) --- double-gate tunnel field-effect-transistor --- topological insulator --- back current blocking layer (BCBL) --- CMOS power amplifier IC --- information integration --- distributed Bragg --- spike-timing-dependent plasticity --- electron affinity --- enhancement-mode --- current collapse --- gallium nitride (GaN) --- band-to-band tunneling --- vertical field-effect transistor (VFET) --- ionic liquid --- luminescent centres --- thermal coupling --- vision localization --- PC1D --- UAV --- ZnO/Si --- dual-switching transistor --- memristor --- field-effect transistor --- higher order synchronization --- shallow trench isolation (STI) --- memristive device --- on-current (Ion) --- low voltage --- reflection transmision method --- dielectric layer --- source/drain (S/D) --- high efficiency --- nanostructure synthesis --- InAlN/GaN heterostructure --- supercapacitor --- high-electron mobility transistor (HEMTs) --- heterojunction --- p-GaN --- recessed channel array transistor (RCAT) --- gate field effect --- charge injection --- saddle FinFET (S-FinFET) --- L-shaped tunnel field-effect-transistor --- conductivity --- energy storage --- hierarchical --- PECVD --- sample grating --- MISHEMT --- bistability --- threshold voltage (VTH) --- bandgap tuning --- oscillatory neural networks --- UV irradiation --- Mott transition --- third harmonic tuning --- topological magnetoelectric effect --- cross-gain modulation --- 2D material --- solar cells --- silicon on insulator (SOI) --- Green’s function --- optoelectronic devices --- semiconductor optical amplifier --- ZnO films --- graphene --- AlGaN/GaN --- polarization effect --- two-photon process --- conductive atomic force microscopy (cAFM) --- 2DEG density --- vanadium dioxide --- interface traps --- potential drop width (PDW) --- pattern recognition --- drain-induced barrier lowering (DIBL) --- atomic layer deposition (ALD) --- normally off power devices --- gate-induced drain leakage (GIDL) --- insulator–metal transition (IMT) --- zinc oxide --- synaptic device --- subthreshold slope (SS) --- landing --- silicon --- corner-effect --- conditioned reflex --- quantum dot --- gallium nitride --- bismuth ions --- conduction band offset --- variational form --- Green's function --- insulator-metal transition (IMT)


Book
Miniaturized Transistors
Authors: ---
ISBN: 3039210114 3039210106 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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What is the future of CMOS? Sustaining increased transistor densities along the path of Moore's Law has become increasingly challenging with limited power budgets, interconnect bandwidths, and fabrication capabilities. In the last decade alone, transistors have undergone significant design makeovers; from planar transistors of ten years ago, technological advancements have accelerated to today's FinFETs, which hardly resemble their bulky ancestors. FinFETs could potentially take us to the 5-nm node, but what comes after it? From gate-all-around devices to single electron transistors and two-dimensional semiconductors, a torrent of research is being carried out in order to design the next transistor generation, engineer the optimal materials, improve the fabrication technology, and properly model future devices. We invite insight from investigators and scientists in the field to showcase their work in this Special Issue with research papers, short communications, and review articles that focus on trends in micro- and nanotechnology from fundamental research to applications.

Keywords

MOSFET --- n/a --- total ionizing dose (TID) --- low power consumption --- process simulation --- two-dimensional material --- negative-capacitance --- power consumption --- technology computer aided design (TCAD) --- thin-film transistors (TFTs) --- band-to-band tunneling (BTBT) --- nanowires --- inversion channel --- metal oxide semiconductor field effect transistor (MOSFET) --- spike-timing-dependent plasticity (STDP) --- field effect transistor --- segregation --- systematic variations --- Sentaurus TCAD --- indium selenide --- nanosheets --- technology computer-aided design (TCAD) --- high-? dielectric --- subthreshold bias range --- statistical variations --- fin field effect transistor (FinFET) --- compact models --- non-equilibrium Green’s function --- etching simulation --- highly miniaturized transistor structure --- compact model --- silicon nanowire --- surface potential --- Silicon-Germanium source/drain (SiGe S/D) --- nanowire --- plasma-aided molecular beam epitaxy (MBE) --- phonon scattering --- mobility --- silicon-on-insulator --- drain engineered --- device simulation --- variability --- semi-floating gate --- synaptic transistor --- neuromorphic system --- theoretical model --- CMOS --- ferroelectrics --- tunnel field-effect transistor (TFET) --- SiGe --- metal gate granularity --- buried channel --- ON-state --- bulk NMOS devices --- ambipolar --- piezoelectrics --- tunnel field effect transistor (TFET) --- FinFETs --- polarization --- field-effect transistor --- line edge roughness --- random discrete dopants --- radiation hardened by design (RHBD) --- low energy --- flux calculation --- doping incorporation --- low voltage --- topography simulation --- MOS devices --- low-frequency noise --- high-k --- layout --- level set --- process variations --- subthreshold --- metal gate stack --- electrostatic discharge (ESD) --- non-equilibrium Green's function


Book
A Themed Issue Dedicated to Professor John B. Goodenough on the Occasion of His 100th Birthday Anniversary
Authors: --- --- ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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This book of Molecules is dedicated to Professor John B. Goodenough (born July 25, 1922, Jena, Germany), an American physicist, who won the 2019 Nobel Prize for Chemistry for his work on developing lithium-ion batteries.

Keywords

structure --- bonding --- physical properties --- collective or localized electrons --- exchange integral --- p-magnetism --- boron sub-oxide --- interstitial atoms --- DFT --- DOS --- ELF --- charge density plots --- bifunctional catalyst --- hybrid catalyst --- oxygen reduction reaction --- oxygen evolution reaction --- four-electron pathway --- lithium ionic conductor --- perovskite structure --- solid electrolyte --- oxide --- lithium-sulfur batteries --- tungsten oxide nanowire --- interlayer --- thiosulfate mediator --- Keywords: spin exchange --- magnetic orbitals --- ligand p-orbital tails --- M–L–M exchange --- M–L…L–M exchange --- α-CuV2O6 --- LiCuVO4 --- (CuCl)LaNb2O7 --- Cu3(CO3)2(OH)2 --- spin Hamiltonian --- magnetism --- energy-mapping analysis --- four-state method --- Green’s function method --- magnetic ground state --- spin exchange --- magnetic anisotropy --- molecular anion --- MPS3 --- qualitative rules --- batteries --- positive electrode --- vanadium phosphates --- covalent vanadyl bond --- mixed anion --- density functional theory --- quantum Monte Carlo --- fast Li+ ion conductor --- Li-ion battery --- spinel --- solid-state battery --- cathode-electrolyte interface --- indigo carmine --- solid polymer electrolyte --- solid state battery --- LMP® technology --- organic battery --- layered oxide cathodes --- alkali–alkali interactions --- electronic structure --- Li diffusion --- defect engineering --- perovskite electrolyte --- lithium-ion battery --- migration pathway --- anisotropic response --- cathode --- polyanion --- high-voltage --- n/a --- M-L-M exchange --- M-L...L-M exchange --- Green's function method --- alkali-alkali interactions

Green's function estimates for lattice Schrödinger operators and applications
Author:
ISBN: 0691120978 1322075719 1400837146 0691120986 9780691120980 9781400837144 9780691120973 9781322075716 Year: 2005 Publisher: Princeton, New Jersey : Princeton University Press,

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This book presents an overview of recent developments in the area of localization for quasi-periodic lattice Schrödinger operators and the theory of quasi-periodicity in Hamiltonian evolution equations. The physical motivation of these models extends back to the works of Rudolph Peierls and Douglas R. Hofstadter, and the models themselves have been a focus of mathematical research for two decades. Jean Bourgain here sets forth the results and techniques that have been discovered in the last few years. He puts special emphasis on so-called "non-perturbative" methods and the important role of subharmonic function theory and semi-algebraic set methods. He describes various applications to the theory of differential equations and dynamical systems, in particular to the quantum kicked rotor and KAM theory for nonlinear Hamiltonian evolution equations. Intended primarily for graduate students and researchers in the general area of dynamical systems and mathematical physics, the book provides a coherent account of a large body of work that is presently scattered in the literature. It does so in a refreshingly contained manner that seeks to convey the present technological "state of the art."

Keywords

Schrödinger operator. --- Green's functions. --- Hamiltonian systems. --- Evolution equations. --- Evolutionary equations --- Equations, Evolution --- Equations of evolution --- Hamiltonian dynamical systems --- Systems, Hamiltonian --- Functions, Green's --- Functions, Induction --- Functions, Source --- Green functions --- Induction functions --- Source functions --- Operator, Schrödinger --- Differential equations --- Differentiable dynamical systems --- Potential theory (Mathematics) --- Differential operators --- Quantum theory --- Schrödinger equation --- Almost Mathieu operator. --- Analytic function. --- Anderson localization. --- Betti number. --- Cartan's theorem. --- Chaos theory. --- Density of states. --- Dimension (vector space). --- Diophantine equation. --- Dynamical system. --- Equation. --- Existential quantification. --- Fundamental matrix (linear differential equation). --- Green's function. --- Hamiltonian system. --- Hermitian adjoint. --- Infimum and supremum. --- Iterative method. --- Jacobi operator. --- Linear equation. --- Linear map. --- Linearization. --- Monodromy matrix. --- Non-perturbative. --- Nonlinear system. --- Normal mode. --- Parameter space. --- Parameter. --- Parametrization. --- Partial differential equation. --- Periodic boundary conditions. --- Phase space. --- Phase transition. --- Polynomial. --- Renormalization. --- Self-adjoint. --- Semialgebraic set. --- Special case. --- Statistical significance. --- Subharmonic function. --- Summation. --- Theorem. --- Theory. --- Transfer matrix. --- Transversality (mathematics). --- Trigonometric functions. --- Trigonometric polynomial. --- Uniformization theorem.


Book
Nanowire Field-Effect Transistor (FET)
Authors: --- ---
Year: 2021 Publisher: Basel, Switzerland MDPI - Multidisciplinary Digital Publishing Institute

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In the last few years, the leading semiconductor industries have introduced multi-gate non-planar transistors into their core business. These are being applied in memories and in logical integrated circuits to achieve better integration on the chip, increased performance, and reduced energy consumption. Intense research is underway to develop these devices further and to address their limitations, in order to continue transistor scaling while further improving performance. This Special Issue looks at recent developments in the field of nanowire field-effect transistors (NW-FETs), covering different aspects of the technology, physics, and modelling of these nanoscale devices.

Keywords

random dopant --- drift-diffusion --- variability --- device simulation --- nanodevice --- screening --- Coulomb interaction --- III-V --- TASE --- MOSFETs --- Integration --- nanowire field-effect transistors --- silicon nanomaterials --- charge transport --- one-dimensional multi-subband scattering models --- Kubo–Greenwood formalism --- schrödinger-poisson solvers --- DC and AC characteristic fluctuations --- gate-all-around --- nanowire --- work function fluctuation --- aspect ratio of channel cross-section --- timing fluctuation --- noise margin fluctuation --- power fluctuation --- CMOS circuit --- statistical device simulation --- variability effects --- Monte Carlo --- Schrödinger based quantum corrections --- quantum modeling --- nonequilibrium Green’s function --- nanowire transistor --- electron–phonon interaction --- phonon–phonon interaction --- self-consistent Born approximation --- lowest order approximation --- Padé approximants --- Richardson extrapolation --- ZnO --- field effect transistor --- conduction mechanism --- metal gate --- material properties --- fabrication --- modelling --- nanojunction --- constriction --- quantum electron transport --- quantum confinement --- dimensionality reduction --- stochastic Schrödinger equations --- geometric correlations --- silicon nanowires --- nano-transistors --- quantum transport --- hot electrons --- self-cooling --- nano-cooling --- thermoelectricity --- heat equation --- non-equilibrium Green functions --- power dissipation


Book
Fractional Calculus Operators and the Mittag-Leffler Function
Author:
ISBN: 3036553681 3036553673 Year: 2022 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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This book focuses on applications of the theory of fractional calculus in numerical analysis and various fields of physics and engineering. Inequalities involving fractional calculus operators containing the Mittag–Leffler function in their kernels are of particular interest. Special attention is given to dynamical models, magnetization, hypergeometric series, initial and boundary value problems, and fractional differential equations, among others.

Keywords

Research & information: general --- Mathematics & science --- fractional derivative --- generalized Mittag-Leffler kernel (GMLK) --- Legendre polynomials --- Legendre spectral collocation method --- dynamical systems --- random time change --- inverse subordinator --- asymptotic behavior --- Mittag–Leffler function --- data fitting --- magnetization --- magnetic fluids --- Gamma function --- Psi function --- Pochhammer symbol --- hypergeometric function 2F1 --- generalized hypergeometric functions tFu --- Gauss’s summation theorem for 2F1(1) --- Kummer’s summation theorem for 2F1(−1) --- generalized Kummer’s summation theorem for 2F1(−1) --- Stirling numbers of the first kind --- Hilfer–Hadamard fractional derivative --- Riemann–Liouville fractional derivative --- Caputo fractional derivative --- fractional differential equations --- inclusions --- nonlocal boundary conditions --- existence and uniqueness --- fixed point --- gamma function --- Beta function --- Mittag-Leffler function --- Generalized Mittag-Leffler functions --- generalized hypergeometric function --- Fox–Wright function --- recurrence relations --- Riemann–Liouville fractional calculus operators --- (α, h-m)-p-convex function --- Fejér–Hadamard inequality --- extended generalized fractional integrals --- Mittag–Leffler functions --- initial value problems --- Laplace transform --- exact solution --- Chebyshev inequality --- Pólya-Szegö inequality --- fractional integral operators --- Wright function --- Srivastava’s polynomials --- fractional calculus operators --- Lavoie–Trottier integral formula --- Oberhettinger integral formula --- fractional partial differential equation --- boundary value problem --- separation of variables --- Mittag-Leffler --- Abel-Gontscharoff Green’s function --- Hermite-Hadamard inequalities --- convex function --- κ-Riemann-Liouville fractional integral --- Dirichlet averages --- B-splines --- dirichlet splines --- Riemann–Liouville fractional integrals --- hypergeometric functions of one and several variables --- generalized Mittag-Leffler type function --- Srivastava–Daoust generalized Lauricella hypergeometric function --- fractional calculus --- Hermite–Hadamard inequality --- Fox H function --- subordinator and inverse stable subordinator --- Lamperti law --- order statistic --- n/a --- Gauss's summation theorem for 2F1(1) --- Kummer's summation theorem for 2F1(−1) --- generalized Kummer's summation theorem for 2F1(−1) --- Hilfer-Hadamard fractional derivative --- Riemann-Liouville fractional derivative --- Fox-Wright function --- Riemann-Liouville fractional calculus operators --- Fejér-Hadamard inequality --- Mittag-Leffler functions --- Pólya-Szegö inequality --- Srivastava's polynomials --- Lavoie-Trottier integral formula --- Abel-Gontscharoff Green's function --- Riemann-Liouville fractional integrals --- Srivastava-Daoust generalized Lauricella hypergeometric function --- Hermite-Hadamard inequality


Book
Miniaturized Transistors, Volume II
Authors: ---
Year: 2022 Publisher: Basel MDPI - Multidisciplinary Digital Publishing Institute

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In this book, we aim to address the ever-advancing progress in microelectronic device scaling. Complementary Metal-Oxide-Semiconductor (CMOS) devices continue to endure miniaturization, irrespective of the seeming physical limitations, helped by advancing fabrication techniques. We observe that miniaturization does not always refer to the latest technology node for digital transistors. Rather, by applying novel materials and device geometries, a significant reduction in the size of microelectronic devices for a broad set of applications can be achieved. The achievements made in the scaling of devices for applications beyond digital logic (e.g., high power, optoelectronics, and sensors) are taking the forefront in microelectronic miniaturization. Furthermore, all these achievements are assisted by improvements in the simulation and modeling of the involved materials and device structures. In particular, process and device technology computer-aided design (TCAD) has become indispensable in the design cycle of novel devices and technologies. It is our sincere hope that the results provided in this Special Issue prove useful to scientists and engineers who find themselves at the forefront of this rapidly evolving and broadening field. Now, more than ever, it is essential to look for solutions to find the next disrupting technologies which will allow for transistor miniaturization well beyond silicon’s physical limits and the current state-of-the-art. This requires a broad attack, including studies of novel and innovative designs as well as emerging materials which are becoming more application-specific than ever before.

Keywords

FinFETs --- CMOS --- device processing --- integrated circuits --- silicon carbide (SiC) metal-oxide-semiconductor field-effect transistors (MOSFETs) --- solid state circuit breaker (SSCB) --- prototype --- circuit design --- GaN --- HEMT --- high gate --- multi-recessed buffer --- power density --- power-added efficiency --- 4H-SiC --- MESFET --- IMRD structure --- power added efficiency --- 1200 V SiC MOSFET --- body diode --- surge reliability --- silvaco simulation --- floating gate transistor --- control gate --- CMOS device --- active noise control --- vacuum channel --- mean free path --- vertical air-channel diode --- vertical transistor --- field emission --- particle trajectory model --- F–N plot --- space-charge-limited currents --- 4H-SiC MESFET --- simulation --- power added efficiency (PAE) --- new device --- three-input transistor --- T-channel --- compact circuit style --- CMOS compatible technology --- avalanche photodiode --- SPICE model --- bandwidth --- high responsivity --- silicon photodiode --- AlGaN/GaN HEMTs --- thermal simulation --- transient channel temperature --- pulse width --- gate structures --- band-to-band tunnelling (BTBT) --- tunnelling field-effect transistor (TFET) --- germanium-around-source gate-all-around TFET (GAS GAA TFET) --- average subthreshold swing --- direct source-to-drain tunneling --- transport effective mass --- confinement effective mass --- multi-subband ensemble Monte Carlo --- non-equilibrium Green’s function --- DGSOI --- FinFET --- core-insulator --- gate-all-around --- field effect transistor --- GAA --- nanowire --- one-transistor dynamic random-access memory (1T-DRAM) --- polysilicon --- grain boundary --- electron trapping --- flexible transistors --- polymers --- metal oxides --- nanocomposites --- dielectrics --- active layers --- nanotransistor --- quantum transport --- Landauer–Büttiker formalism --- R-matrix method --- nanoscale --- mosfet --- quantum current --- surface transfer doping --- 2D hole gas (2DHG) --- diamond --- MoO3 --- V2O5 --- MOSFET --- reliability --- random telegraph noise --- oxide defects --- SiO2 --- split-gate trench power MOSFET --- multiple epitaxial layers --- specific on-resistance --- device reliability --- nanoscale transistor --- bias temperature instabilities (BTI) --- defects --- single-defect spectroscopy --- non-radiative multiphonon (NMP) model --- time-dependent defect spectroscopy --- n/a --- F-N plot --- non-equilibrium Green's function --- Landauer-Büttiker formalism

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