scholarly journals Single-layer metal-on-metal islands driven by strong time-dependent forces

2012 ◽  
Vol 85 (1) ◽  
Author(s):  
Janne Kauttonen ◽  
Juha Merikoski
Keyword(s):  
Single Layer ◽  
Time Dependent ◽  
Metal On Metal ◽  
Metal Islands

Transient Finite Element Analysis of the Exterior Structural Acoustics Problem

1990 ◽  
Vol 112 (2) ◽  
pp. 245-256 ◽  
Author(s):  
P. M. Pinsky ◽  
N. N. Abboud
Keyword(s):  
Finite Element ◽  
Single Layer ◽  
Mirror Image ◽  
Time Dependent ◽  
Element Approximation ◽  
Element Formulation ◽  
Structural Acoustics ◽  
Element Analysis ◽  
Displacement Potential ◽  
Variational Formalism

Considerable progress has been made in the development of numerical methods for the time-harmonic exterior structural acoustics problem involving solution of the coupled Helmholtz equation. In contrast, numerical solution procedures for the transient case have not been studied so extensively. In this paper a finite element formulation is proposed for solution of the time-dependent coupled wave equation over an infinite fluid domain. The formulation is based on a finite computational fluid domain surrounding the structure and incorporates a sequence of boundary operators on the fluid truncation boundary. These operators are designed to minimize reflection of outgoing waves and are based on an asymptotic expansion of the exact solution for the time-dependent problem. In the fluid domain, a mixed two-field finite element approximation, based on a specialization of the Hu-Washizu principle for elasticity, is proposed and employs pressure and displacement potential as independent fields. Since radiation dissipation renders the coupled system nonconservative, a variational formalism based on the Morse and Feshbach concept of a “mirror-image” adjoint system is used. The variational formalism also accommodates viscoelastic dissipation in the structure (or its coatings) and this is considered in the paper. Very accurate results for model problems involving a single layer of fluid elements have been obtained and are discussed in detail.

Time-dependent performance change of single layer fuel cell with Li0.4Mg0.3Zn0.3O/Ce0.8Sm0.2O2−δ composite

2014 ◽  
Vol 39 (20) ◽  
pp. 10718-10723 ◽  
Author(s):  
Huiqing Hu ◽  
Qizhao Lin ◽  
Zhigang Zhu ◽  
Xiangrong Liu ◽  
Bin Zhu
Keyword(s):  
Fuel Cell ◽  
Single Layer ◽  
Time Dependent ◽  
Performance Change

scholarly journals Lamination Curing Method for Inkjet Printed Flexible Angle Sensors

2021 ◽  
Author(s):  
Dila Türkmen ◽  
Merve Acer Kalafat
Keyword(s):  
Sheet Resistance ◽  
Single Layer ◽  
Time Dependent ◽  
Curing Time ◽  
Thermal Curing ◽  
Curing Methods ◽  
Curing Method ◽  
Lower Sheet Resistance ◽  
Sensing Performance ◽  
Pet Substrate

In this paper we present the lamination curing as a stand-alone method to activate the silver nanoparticle (Ag NP) inkjet printed angle sensors on a 0.14 mm PET substrate, with a desktop printer. (With the term “lamination curing”, we refer passing the printed sample through a lamination machine, without any actual laminating purpose, only for curing.) We compared the method with the oven curing, which is the widest used method for the intended sensors, and found that lamination cured sensors give lower sheet resistance, lower fabrication uncertainty and more consistent angle sensing behaviors with higher sensing performance. Different curing parameters are inspected and a process under 3 minutes is achieved giving a 0.06 Ohm/square sheet resistance. For such a low sheet resistance, presented method has the lowest thermal curing time among all single layer Ag NP printing studies in the literature. An experimental model is presented for the sheet resistance - aspect ratio relation for both methods. Time dependent resistance shifts of the lamination cured sensors are also inspected and proved to be insignificant. We state lamination curing as an advantageous and reliable alternative to oven curing and other fast curing methods both for sensor and circuitry printing implementations.

Individual DNA Base Identification at the Transport Through Graphene Nanopore

2013 ◽  
Author(s):  
Kazuya Takeuchi ◽  
Tatiana Zolotoukhina
Keyword(s):  
Single Layer ◽  
Potential Interaction ◽  
Time Dependent ◽  
Single Layer Graphene ◽  
Stochastic Motion ◽  
Contact Mode ◽  
Additional Information ◽  
Dna Base ◽  
Force Signal ◽  
Graphene Nanopore

Use of solid film nanopore in which DNA is threaded through for efficient DNA sequencing devices has various practical issues concerned with nucleobase motion that should be controlled. Translocation rate and different orientation of nucleobases, stochastic motion of single-strand DNA through a nanopore introduce definite amount of noise into the signal defining interaction of nucleobase and nanopore. We propose to consider the single layer graphene nanopore as a two-way interaction scanning device. The interaction forces between pore and base are structure dependent, even within orientation and noise average over a base, and can be evaluated. The appropriate translocation rate of the base molecule provide a time-dependent function of interaction change inside of interaction interval of each individual base with graphene nanopore. In such case transient characteristics of the individual bases can be used for identification of the bases. The forces between bases and graphene nanopore of 1.5nm diameter are calculated as interaction characteristics of bases. Molecular dynamics method is used for the DNA base and graphene nanopore calculations with the MM2/MM3 potentials for the base and REBO graphene potential. Interaction potential between the bases and graphene are of the MM2/MM3 type although the possibility of the Van der Waals interaction only can also be considered. The noise of the force signal due to orientation of the bases in the pore is evaluated and base-dependent interaction recognition is considered relative to the magnitude of the AFM signal in the non-contact mode. The time-dependent in-plane for graphene transient force signal resolution for different bases is probed. Possibility of base identification by combination of transient in-plane force taken as orientation averaged signal is studied. Obtained results can simultaneously give additional information for the electronic transport calculations with possible transient base orientations relative to the edge of pore in graphene.

SOLVING THE SINGLE LAYER MULTICONFIGURATION TIME-DEPENDENT HARTREE–FOCK EQUATION IN SECOND QUANTIZATION REPRESENTATION BASED ON A DECOMPOSITION OF THE OVERALL FOCK SPACE

2013 ◽  
Vol 12 (01) ◽  
pp. 1250105 ◽  
Author(s):  
WENLIANG LI ◽  
X. WENWU ◽  
H. KELI
Keyword(s):  
Fock Space ◽  
Single Layer ◽  
Time Dependent ◽  
Initial Condition ◽  
Imaginary Time ◽  
Second Quantization ◽  
Hartree Fock ◽  
Time Propagation ◽  
Set Up ◽  
Quantization Representation

Very recently, the multilayer multiconfiguration time-dependent Hartree (MCTDH) method based on a decomposition of the overall Fock space in second quantization representation was proposed [Wang H, Thoss M, J Chem Phys131:024114, 2009], and they have presented demonstrative numerical example on vibrationally coupled electron transport. Followed by the thinking, the strategies of the implement of the theory to deal with multielectron dynamics with consideration coulomb interaction were discussed in detail. Some demonstrative calculations have been carried out by using the single layer MCTDHF method. The influences of the different choice way of initial condition, such as the species of basis function, the type of decomposition of the full Fock space, the choice of the spin orbitals, the number of the single particle function and so on, on the imaginary time propagation are mainly studied. The bridge between the generalized theory and the calculation application has been set up.

scholarly journals Chaos Synchronization in Time-Dependent Duplex Networks

Complexity ◽  
2019 ◽  
Vol 2019 ◽  
pp. 1-8 ◽  
Author(s):  
Qian Liu ◽  
Wenchen Han ◽  
Lixing Lei ◽  
Qionglin Dai ◽  
Junzhong Yang
Keyword(s):  
Chaos Synchronization ◽  
Single Layer ◽  
Single Mode ◽  
Time Dependent ◽  
Switching Frequency ◽  
Complete Synchronization ◽  
Effective Coupling ◽  
Fast Switching ◽  
Single Mode Approximation ◽  
Dynamical Regimes

Though the complete chaos synchronization on single-layer networks has been well understood, it is still a challenge on multiplex networks. In this work, we study the complete chaos synchronization on time-dependent duplex networks in which interaction pattern among oscillators alternates periodically between two single-layer networks. The alternations between two layers are characterized by the offset strength A and the switching frequency ω. We find that there are two dynamical regimes depending on ω. For high ω, the critical A for the stable complete synchronization is independent of ω and the fast-switching approximation suggests that the time-dependent duplex networks can be approximated by the time-independent duplex networks with effective coupling strength. For low ω, the critical A depends on ω nonmonotonically. At extremely low ω, the estimation of the critical A can be obtained by a single-mode approximation taking one dominant transversal network mode to complete synchronization into considerations.

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