Inspired by the human cochlea, we propose a directional sound sensor using resonator array to overcome limitations of existing microphones. The proposed consists multiple cantilevers that respond different resonance frequencies and separately acquire signals then combine them for sensing. directionality is bipolar (figure-of-8) because signal proportional input sound’s pressure gradient generat...

The resonant frequency and sensitivity of an atomic force microscope (AFM) cantilever with assembled cantilever probe (ACP) have been analyzed and a closed-form expression for the sensitivity of vibration modes has been obtained. The proposed ACP comprises an inclined cantilever and extension, and a tip located at the free end of the extension, which makes the AFM capable of topography at sidew...

Multispectral metamaterial absorbers based on metal-insulator-metal nano-square patch resonators are studied here. For a geometry consisting of perfectly nano-square patches and vertical sidewalls, double resonances in the visible regime are observed due to simultaneous excitation of electric and magnetic plasmon modes. Although slightly modifying the sizes of the square patches makes the reson...

Circular dichroism spectroscopy is a sensitive and widely applied technique to detect chiral molecules. Recent studies have shown high prospects for plasmonic metasurfaces of pseudo-chiral nano-resonators in enhancing sensitivity. Here we study the far-field circular gold U-shaped by calculating Mueller matrix elements with Finite element method investigate its response light near field electri...

With their unparalleled mass sensitivity, enabling single-molecule spectrometry, nanomechanical resonators have the potential to considerably improve existing sensor technology. Vertical pillar are a promising alternative lateral resonator designs. However, one major obstacle still stands in way of practical use: The efficient transduction (actuation & detection) vibrational motion such...

Inertia amplification is a mechanism coupling degrees of freedom within vibrating structure. Its goal to achieve an apparent high dynamic mass and, accordingly, low resonance frequency. Such structures have been described for use in locally resonant metamaterials and phononic crystals lower the starting frequency band gap without adding system. This study shows that any non-linear kinematic bet...

abstract: the main aim of the vibration energy harvesters is to locally power autonomous devices such as wireless sensors. generally, power levels are low and the environmental benefit of the technology is to replace batteries rather than saving energy per se. piezoelectric vibrational energy harvesters are usually inertial mass based devices, where a cantilever beam with a piezoelectric outer ...

We have used finite-element methods to design and simulate a tunable terahertz frequency range band-stop filter based on coupled split-ring resonators integrated into planar Goubau-line waveguide. Two with different geometrical lengths gap widths were designed resonate at the same frequency. When two coupled, resonance splitting was observed in transmission spectra controlled by distance betwee...

When heated, micro-resonators present a shift of their resonance frequencies. We study specifically silicon cantilevers heated locally by laser absorption, and evaluate theoretically experimentally temperature profile its interplay with the mechanical resonances. enhanced version our earlier model [F. Aguilar Sandoval et al., J. Appl. Phys. 117, 234503 (2015)] including both elasticity geometry...

Quantum teleportation, the faithful transfer of an unknown input state onto a remote quantum system, is key component in long distance communication protocols and distributed computing. At same time, high frequency nano-optomechanical systems hold great promise as nodes future network, operating on-chip at low-loss optical telecom wavelengths with mechanical lifetimes. Recent demonstrations inc...