Catálogo de publicaciones - revistas

<jats:p>Transposons become a focus of speculation and scrutiny in biomedical research</jats:p>

<jats:p>Shift focus from disarmament to preventing reemergence</jats:p>

<jats:p>There is much to learn from the farming practices of ants, termites, and other insects</jats:p>

<jats:p>A science writer offers an accessible account of the Mesozoic’s mass extinction</jats:p>

<jats:p> Highlights from the <jats:italic>Science</jats:italic> family of journals </jats:p>

<jats:p>Editors’ selections from the current scientific literature</jats:p>

<jats:p> Relaxor-lead titanate (PbTiO <jats:sub>3</jats:sub> ) crystals, which exhibit extremely high piezoelectricity, are believed to possess high electro-optic (EO) coefficients. However, the optical transparency of relaxor-PbTiO <jats:sub>3</jats:sub> crystals is severely reduced as a result of light scattering and reflection by domain walls, limiting electro-optic applications. Through synergistic design of a ferroelectric phase, crystal orientation, and poling technique, we successfully removed all light-scattering domain walls and achieved an extremely high transmittance of 99.6% in antireflection film–coated crystals, with an ultrahigh EO coefficient <jats:italic>r</jats:italic> <jats:sub>33</jats:sub> of 900 picometers per volt (pm V <jats:sup>−1</jats:sup> ), &gt;30 times as high as that of conventionally used EO crystals. Using these crystals, we fabricated ultracompact EO Q-switches that require very low driving voltages, with superior performance to that of commercial Q-switches. Development of these materials is important for the portability and low driving voltage of EO devices. </jats:p>