Triplet states in organic semiconductors Materials Science and
... conﬁguration needs a high driving voltage . The sample
thickness is not relevant for transistor applications, where the
high mobilities obtainable in crystalline structures are an
important desired parameter. For example, in ﬁeld effect
transistors made from single crystals of acenes, such as
An Introduction to MEMS (Micro
... MEMS is a process technology used to create tiny integrated devices or systems that combine
mechanical and electrical components. They are fabricated using integrated circuit (IC) batch
processing techniques and can range in size from a few micrometers to millimetres. These
devices (or systems) have ...
Deposition, Characterization, and Fabrication of a Zinc Oxide
... is used. This kind of device would be called a thickness-shear mode actuator. ........................... 15
Figure 12 – When thinking of the transverse mode in piezoelectrics, think of when kneading
bread dough. The dough will get smaller in the thickness direction, but will simultaneously get
various packaging challenges and solutions
... stable and reliable performance characteristics. Due to low mass, low power
consumptions small volume and possible integration with control and sense electronics,
MEMS seem ideal for various applications in different broadband, radio frequency,
wireless systems etc. By shrinking traditional componen ...
Ab initio modelling of mechanical and elastic properties of solids
... The aim of the thesis is to study mechanical properties of crystalline materials
on the basis of density functional theory (DFT) by applying first-principles or ab
initio techniques. Mechanical properties of materials are of crucial importance
for technological applications. How a material breaks, i ...
piezoelectric anisotropy and free energy instability in
... some discussions.
Firstly, it can be easily illustrated where does the interest for potassium niobate come
from. Potassium niobate single crystal (the abbreviation KN will be used throughout
this report) is already known as an outstanding nonlinear optic material. But, it also
has advantages for use ...
Parametric down-conversion devices: The coverage of the
... All the above parametric down-conversion processes and devices have their laser analogs and there are many similarities with
the operation of a laser. However, there are also essential differences: (i) parametric devices require coherent pump sources, i.e.
lasers, and parametric ﬂuorescence and gain ...
Optical Distinctions Between Weyl Semimetal TaAs and Dirac
... Weyl Fermions29,30 and can be considered as two
dimensional (2D) analogs to Weyl semimetals in
terms of electronic dispersions. Furthermore, the
electrostatic screening is weak for Weyl fermions
since the density of states vanish at the Fermi
energy.19 Therefore, it is considerably interesting to
M - Unife
... Magnetostatic effects due to shape.
For uniformly magnetized bodies • M = 0 (M is uniform everywhere) so that magnetostatic
energy depends only on surface magnetic charges n • M ≠ 0 → shape of the body)
The LDA+U Approach: A Simple Hubbard Correction - cond
... wave function are allowed to decrease their weight (e.g., in a variational calculation) while the
distance between the fragments increases. This is only possible if the N-electron wave function
is constructed as a linear combination of multiple Slater determinants. In other words, when
electrons are ...
... the optical spectra in the high energy region due to the possible enhancement of nonlinear optical and emission characteristics of the active species embedded in the photonic crystals. This is due to the presence of the flat or low dispersion
bands in the energy regions where the group velocity is v ...
Elastic response of cubic crystals to biaxial strain
... treatment goes beyond linear elasticity theory. In fact, quantitative agreement between the observed and the calculated
wavelength of light emission from semiconductor heterostructure lasers could only be achieved by taking nonlinear
elastic response into account.13,14 Further examples where
Ultrasonic spray deposition for production of organic solar cells
... efﬁciencies attention has been directed toward the development
of large area device fabrication techniques [9–11].
Historically, spray deposition has been used in the coating
industry for a myriad of applications typically achieving uniform
ﬁlms at low cost including multilayer paints for automobile ...
Understanding Damping Techniques for Noise and Vibration Control
... developed at and near resonance can
easily damage internal components or
even tear a device from its mounting.
The bottom line in noise and vibration
control, as in virtually all other engineering efforts, is cost-effectiveness,
which translates into achieving workable, inexpensive soluti ...
Free-Standing Na2/3Fe1/2Mn1/[email protected] Film for a Sodium
... lowers the energy density on a full cell level. Furthermore, Nmethyl-2-pyrrolidone (NMP), a solvent commonly used in
battery processing while well-known for its negative environmental impact, has to be used for the reported electrode
coating. For the large-scale production of consumer batteries,
Thermal ionization and thermally activated crossover
... To provide a better understanding of the quenching processes of the 5d-4f luminescence, the family of garnet
Ln3 M5 O12 (Ln = Gd, Y, Lu; M = Sc, Al, Ga) doped with
Ce3+ and Pr3+ serve as important model systems because of the
possibility to tune optical properties as a function of covalency,
size of ...
... and does not include words like “I” or “because.” For example,
Galileo Galilei was an Italian scholar in the 16th century who
would become known as the father of scientific investigation and
astronomy. He was fascinated by falling objects, and wondered
whether different objects fall at different spe ...
What`s New in Electrotechnologies for Industrial Process Heating?
... efficiency gains and improved productivity, while reducing their greenhouse gas emissions. Four
efficient electro-technologies are discussed in the following sections.
In 2011, EPRI will be exploring opportunities for case studies of electric process heating
technologies that can provide real-world ...
First-principles study of electronic, optical and thermoelectric
... AgMO3 ferroelectric perovskite family, where M (Nb, Ta and V) is penta or
tetravalent metal cation, reveals a wide range of interesting microwave dielectric
properties.1 Silver-based perovskite niobates, tantalite’s and vanadate are ideal
compounds for technological applications in telecommunication ...
Smart Materials in the Marine Environment A State of the Art Review
... the case for all displacement craft as shown in Figures 2a-f; (b) lift `derived from
dynamic/forward motion of the vessel, such as planning craft or hydrofoils as
shown in Figure 2g-h; or (c) lift wholly or partially derived from injected air cushions,
as shown in Figure 2i-j.
Hyperthermal Vapor Deposition of Copper: Reflection and Resputtering
... Experimental studies have shown that hyperthermal adatoms with incident energies of 20 eV or
above can also be reflected and/or induce sputtering of predeposited atoms (resputtering) [6 ]. These
reflection and resputtering processes can have
important consequences for the manufacture of
thin films a ...
Workshop on Semiconductor Materials and Detectors,
... Proceedings of Workshop on Semiconductor based Detectors, November 19, 2013, Toledo, OH, USA
1:11(acryl : iodine). The contrast ratio of estimated
system which has low energy resolution(~16keV) is
1:4. Our system improves the contrast ratio of
subtraction of iodine CT image.
Structure of the high voltage phase of layered P2
... by a prime (i.e., P 0 2). The number following the sodium coordination environment describes the number of MO2 layers in a
unit cell. These polymorphs based on oxygen close packing differ
in their oxygen arrays; namely ABCABC stacking for O3 and
ABBA stacking for P2.
Sodium layered oxides oﬀer signi ...
for free pp 275-288
... directly, burn rate determines the rate of gas production from a propellant, and thus the thrust from
and internal pressure within a rocket motor. Accordingly, an understanding of the ways in which
burn rate can be adjusted, can be useful in modifying pyrotechnic formulations to maximize their
Energy harvesting (also known as power harvesting or energy scavenging) is the process by which energy is derived from external sources (e.g. solar power, thermal energy, wind energy, salinity gradients, and kinetic energy), captured, and stored for small, wireless autonomous devices, like those used in wearable electronics and wireless sensor networks.Energy harvesters provide a very small amount of power for low-energy electronics. While the input fuel to some large-scale generation costs resources (oil, coal, etc.), the energy source for energy harvesters is present as ambient background and is free. For example, temperature gradients exist from the operation of a combustion engine and in urban areas, there is a large amount of electromagnetic energy in the environment because of radio and television broadcasting.