Low-temperature processing of screen-printed piezoelectric KNbO with integration onto biodegradable paper substrates.

The development of fully solution-processed, biodegradable piezoelectrics is a critical step in the development of green electronics towards the worldwide reduction of harmful electronic waste. However, recent printing processes for piezoelectrics are hindered by the high sintering temperatures required for conventional perovskite fabrication techniques. Thus, a process was developed to manufacture lead-free printed piezoelectric devices at low temperatures to enable integration with eco-friendly substrates and electrodes.

Low-Noise Operation of All-Fiber Femtosecond Cherenkov Laser.

We investigate the noise properties of a femtosecond all-fiber Cherenkov radiation source with emission wavelength 600 nm, based on an Yb-fiber laser and a highly nonlinear photonic crystal fiber. A relative intensity noise as low as 103 dBc/Hz, corresponding to 2.48% pulse-to-pulse fluctuation in energy, is observed at the Cherenkov radiation output power of 4.

Dynamic control of the operation regimes of a mode-locked fiber laser based on intracavity polarizing fibers: experimental and theoretical validation.

An intracavity polarizing fiber is proposed to control the emission regime of a passively mode-locked fiber laser. Stable operation in self-starting high and low dispersion soliton mode-locking and 100 GHz multiwavelength regimes is demonstrated through numerical simulations and experimental validation. Mode-locking stability is ensured by a saturable absorber in the ring cavity.

A nanoscale parametric feedback oscillator.

We describe and demonstrate a new oscillator topology, the parametric feedback oscillator (PFO). The PFO paradigm is applicable to a wide variety of nanoscale devices and opens the possibility of new classes of oscillators employing innovative frequency-determining elements, such as nanoelectromechanical systems (NEMS), facilitating integration with circuitry and system-size reduction. We show that the PFO topology can also improve nanoscale oscillator performance by circumventing detrimental effects that are otherwise imposed by the strong device nonlinearity in this size regime.

Linear and nonlinear optical properties of carbon nanotube-coated single-mode optical fiber gratings.

Single-wall carbon nanotube deposition on the cladding of optical fibers has been carried out to fabricate an all-fiber nonlinear device. Two different nanotube deposition techniques were studied. The first consisted of repeatedly immersing the optical fiber into a nanotube supension, increasing the thickness of the coating in each step.

Sharp high-aspect-ratio AFM tips fabricated by a combination of deep reactive ion etching and focused ion beam techniques.

The shape and dimensions of an atomic force microscope tip are crucial factors to obtain high resolution images at the nanoscale. When measuring samples with narrow trenches, inclined sidewalls near 90 degrees or nanoscaled structures, standard silicon atomic force microscopy (AFM) tips do not provide satisfactory results. We have combined deep reactive ion etching (DRIE) and focused ion beam (FIB) lithography techniques in order to produce probes with sharp rocket-shaped silicon AFM tips for high resolution imaging.

CD133+ cell content does not influence recovery time after hematopoietic stem cell transplantation.

Background: Infusion of an adequate dose of CD34+ mononuclear hematopoietic stem cells (HSCs) is the single most important variable to assure success in hematopoietic grafting. CD133+ HSCs constitute the CD34+ subgroup with higher differentiation potential. The number of granulocyte-colony-stimulating factor (G-CSF)-mobilized CD133+ HSCs administered during hematopoietic grafting and its relationship with the number of days needed to regain hematopoiesis was determined.

Conduction in rectangular quasi-one-dimensional and two-dimensional random resistor networks away from the percolation threshold.

In this study we investigate electrical conduction in finite rectangular random resistor networks in quasione and two dimensions far away from the percolation threshold p(c) by the use of a bond percolation model. Various topologies such as parallel linear chains in one dimension, as well as square and triangular lattices in two dimensions, are compared as a function of the geometrical aspect ratio. In particular we propose a linear approximation for conduction in two-dimensional systems far from p(c), which is useful for engineering purposes.

Microcollimator for micrometer-wide stripe irradiation of cells using 20-30 keV X rays.

Abstract Pataky, K., Villanueva, G., Liani, A.

[Is it possible to cure a patient with mycosis fungoides? A case report].

Sezary syndrome (SS) and mycosis fungoides (MF) are a group of non Hodgkin lymphomas that originate from T-lymphocytes and involve mostly the skin. These entities are generally non treatable and patient prognosis remains poor even with the advent of current treatment schedules. Complete remissions are seldom observed.