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Optical thin films are today involved in numerous optical systems where they constitute a key to their ultimate performance. For most applications, high accuracy is required on both the optical and no...
Meniscus-Assisted Technique Produces High Efficiency Perovskite PV Films
Meniscus-Assisted Technique Produces Perovskite PV Films
2017/7/24
A new low-temperature solution printing technique allows fabrication of high-efficiency perovskite solar cells with large crystals intended to minimize current-robbing grain boundaries. The meniscus-a...
Molecular-dynamics Simulations of Stacking-fault-induced Dislocation Annihilation in Pre-strained Ultrathin Single-crystalline Copper Films
Molecular dynamics dynamic deformation metal structure
2014/12/19
We report results of large-scale molecular-dynamics (MD) simulations of dynamic deformation under biaxial tensile strain of pre-strained single-crystalline nanometerscale- thick face-centered cubic (f...
Wrinkling Of Floating Thin Polymer Films
Pure sciences Cascade Deformation Polymers Thin films Wrinkling
2014/11/20
This thesis presents an extensive study of wrinkling of thin polystyrene films, tens of nanometers in thickness, floating on the surface of water or water modified with surfactant.First, we study the ...
High Q micro-ring resonators fabricated from polycrystalline aluminum nitride films for near infrared and visible photonics
High Q micro-ring resonators polycrystalline aluminum nitride films visible photonics Optics
2012/5/29
We demonstrate wideband integrated photonic circuits in sputter-deposited aluminum nitride (AlN) thin films. At both near-infrared and visible wavelengths, we achieve low propagation loss in integrate...
Losses in superconducting Niobium Films caused by Interface Tunnel Exchange
Superconducting cavities niobium Quadrupole Resonator interface tunnel exchange surface resistance
2012/4/20
Identifying the loss mechanisms of niobium film cavities enables an accurate determination of applications for future accelerator projects and points to research topics required to mitigate their limi...
A mesoscopic model for microscale hydrodynamics and interfacial phenomena: Slip, films, and contact angle hysteresis
mesoscopic model microscale hydrodynamics interfacial phenomena angle hysteresis
2012/2/29
We present a model based on the lattice Boltzmann equation that is suitable for the simulation of dynamic wetting. The model is capable of exhibiting fundamental interfacial phenomena such as weak ads...
Recording Characteristics of (Dy,Tb)FeCo disks were studied.'Anisotropy dispersion' of rare earth constituents such as Gd,Tb,and Dy qualitatively accounts for domain wall mobility and domain size.Resu...
We report the strong correlation of deposition parameters, microstructure and stability of r.f.diode sputtered magneto-optical thin films studied by transmission electron microscopy and a magneto-opti...
The anomalous magnetoresistance effect in compositionally modulated TM/TM films (Co/Pt and Co/Pd) has been investigated. Results of measurements on samples at room temperature as a function of the str...
The required bias field of a sperimagnetic film is governed by a finite exchange coupling coefficient ~l! mainly determined by the subnetwork coupling. From the study of a series of ~Dy,Tb!FeCo films ...
Interface Wall Energy in Exchange-Coupled Magneto-Optical Films
exchange-coupled double-layered magnetically induced super-resolution center aperture detection interface wall energy capping effcet
2011/11/30
Exchange-coupled double-layered (ECDL) films were adopted to increase density of magnetically induced superresolution (MSR) media by using center aperture detection scheme,and to improve sensitivity o...
Exchange coupling coefficient and domain wall mobility of (Dy,Tb)FeCo magneto-optical films
2011/11/30
The magnetic properties and recording characteristics of ~Dy,Tb!FeCo films are dependent upon the anisotropy dispersion of rare earth constituents and the exchange integral between rare earth and tran...
Geometric shape dependence of coercivity for patterned magnetic thin films
Coercivity E-beam lithography Micro-structure Shaped-dependence Canting
2011/11/30
The micro-strips with patterned magnetic domains using electron beam lithography have been made to study the geometric shape dependence of coercivity. The size of the micro-strip is 10 lm]30 lm with 0...
Relaxation of pinned domains in patterned magnetic thin films
Magnetic pinning E-beam lithography Domain expansion Domain wall motion
2011/11/30
We have shown in previous papers that the magnetic domains could be pinned inside the arti"cially patterned hole arrays under suitable geometry aspect ratio. Nevertheless, we have found that if we rev...