Monodisperse multifunctional MnFe2O4/dye/silica core/shell nanoparticles have been designed and developed. The magnetic cores act as nano-heaters in biological systems under RF field excitation and the encapsulated dyes work as local temperature probes. The silica shells enable the water-solubility and biocompatibility of the NPs and protect the encapsulated fluorophores from photobleaching.

We present the case of a 72-year-old male who underwent a permanent transvenous DDD pacemaker implantation for symptomatic complete heart block. The postoperative surface electrocardiogram (ECG) revealed a right bundle branch block (RBBB) pacing pattern with transition in lead V3 and left bundle branch block (LBBB) in D1, suggesting a malpositioned ventricular lead in the left heart. Malpositio...

A 780-nm-band integrated tunable two-wavelength AlGaAs DBR laser with PN junction heaters was designed and fabricated. Tunable coherent THz wave generation in 0.8-1.2 THz using GaAs photomixers was demonstrated. Keywords-component; DBR lasers; two-wavelength lasers; tunalbe lasers; integrated optoelectoronics; THz-wave generation

We investigate in this work the formulation of composite resistive pastes based on epoxy resins and graphite for micro-heater manufacturing via thick-film technology. These resistive pastes are designed for screenprinting onto a printed circuit board (PCB) substrate; further coating with expandable polydimethylsiloxane (PDMS), a composite based on an elastomeric matrix and expandable microspher...

The scenarios of achieving effective ionospheric modification are summarized and the likely physical processes engaging linear and nonlinear mode conversions through plasma inhomogeneity and nonlinearity are revealed. Parametric instabilities, which are the directly relevant processes to achieve effective heating of the ionospheric F region, are formulated and analyzed. The threshold fields and...

Breakthroughs in smart grid technology make it possible to deliver electricity controlled and intelligent ways improve energy efficiency between the user utility. Demand-side management strategies can reduce overall usage shift consumption peak loads. Electric water heaters account for 40% of residential consumption. Since they are thermal storage devices, advanced control their efficiency. How...

This article reports the results of research on application turbulent model to fluid flow in cavities. was developed using kinetic energy equation k, dissipation ɛ and temperature variance θ2 applying damping function f. While equations about tensor stress vector heat flux are formulated algebraically. simulation is carried out at Rayleigh number Ra = 5 x 1010. applied a three-dimensional cavit...

We propose a resonator-based multichannel DQPSK modulator with a small footprint on chip. The structure has been fabricated on SOI platform. A set of micro-heaters are used to adjust the wavelength of each modulator channel. @ 2012 Optical Society of America OCIS codes: 130.4110, 130.3120, 230.5750