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Room temperature visible/infrared emission and energy transfer in Nd3+-based organic/inorganic hybrids
(2003-01-01)
The photoluminescence features and the energy transfer processes of Nd3+-based siloxanepoly(oxyethylene) hybrids are reported. The host matrix of these materials, classed as di-ureasils, is formed by a siloxane backbone ...
Optimal low-cost transfer to L4 and L5 lagrangian points based on G-family of periodic orbits
(2012-12-01)
An alternative transfer strategy to send spacecrafts to stable orbits around the Lagrangian equilibrium points L4 and L5 based in trajectories derived from the periodic orbits around LI is presented in this work. The ...
Optical properties and energy-transfer frequency upconversion of Yb 3+-sensitized Ho3+- And Tb3+-doped lead-cadmium-germanate glass and glass ceramic
(2006-05-09)
In this report we investigate the optical properties and energy-transfer upconversion luminescence of Ho3+- and Tb3+/Yb 3+-codoped PbGeO3-PbF2-CdF2 glass-ceramic under infrared excitation. In Ho3+/Yb 3+-codoped sample, ...
Red, green, and blue upconversion luminescence in ytterbium-sensitized praseodymium-doped lead-cadmium-germanate glass
(2004-08-17)
Blue, green, red, and near-infrared upconversion luminescence in the wavelength region of 480 - 740 nm in Pr3+/Yb3+-codoped lead-cadmium-germanate glass under 980 nm diode laser excitation, is presented. Upconversion ...
Revisited Nonlinear and Non-Ideal Vibrations
(Technical University Liberec, 2011-01-01)
In this paper, an overview on non-ideal vibrations (NIS) is presented, concerning the mitigation of vibration of two (NIS) inverted pendulums. We detected the presence of nonlinear interactions and an energy transfer in ...
Experimental aspects of partially premixed pulsating combustion
(2005-12-27)
The pulsating combustion process has won interest in current research due to indications that its application in energy generation can offer several advantages, such as: fuel economy, reduced pollutants formation, increased ...
THE USE OF WAVELETS ANALYSIS TO CHARACTERIZE THE DYNAMIC BEHAVIOR OF ENERGY TRANSFER VIBRATIONAL SYSTEMS
(Amer Soc Mechanical Engineers, 2014-01-01)
This paper describes and use of wavelet analysis for identification of regular and irregular behavior of dynamical systems. We are focused in single and double-well potential energy harvesting systems that present either ...
The use of wavelets analysis to characterize the dynamic behavior of energy transfer vibrational systems
(2014-01-01)
This paper describes the use of wavelet analysis for identification of regular and irregular behavior of dynamical systems. We are focused in single and double-well potential energy harvesting systems that present either ...
Bright visible upconversion emission and thermally enhanced cooperative energy-transfer in Tb3+/Yb3+-codoped tellurite glass
(2003-12-01)
In this work, bright visible upconversion emission excited through cooperative energy-transfer and thermal effects in Tb/sup 3+//Yb/sup 3+/-codoped 60TeO/sub 2/-10GeO/sub 2/-10K/sub 2/O-10Li/sub 2/O-10Nb/sub 2/O/sub 5/glasses ...
WIRELESS INDUCTIVE POWER TRANSFER, ORIENTED MODELING AND DESIGN
(Ieee, 2015-01-01)
This paper proposes a modeling, design methodology and shows the main simulation results to the development of a Wireless Power Transmission (WPT) element, applied to pure Electric Vehicles (EV). The proposed structure is ...