Smart Sand—a wide bandwidth vibration energy harvesting platform

Marinkovic, Bozidar; Koser, Hur
March 2009
Applied Physics Letters;3/9/2009, Vol. 94 Issue 10, pN.PAG
Academic Journal
We propose a concept for true wide bandwidth vibration energy harvesting. Our approach exploits nonlinear stretching of fixed-fixed beams in an off-resonance mode, effectively expanding the operational frequency range well beyond the narrow bandwidth of linear resonators. Our initial prototype demonstrates operation between 160–400 Hz, without the need for frequency tuning. A simple dynamic model shows good agreement with measurements. Optimized device geometry will allow for even lower frequency operation (starting at 60 Hz) at strain levels above 1e-3 (ideal for piezoelectric transduction).


Related Articles

  • Noncontact excitation of high Q acoustic resonances in glass plates. Stevenson, Adrian C.; Lowe, Christopher R. // Applied Physics Letters;7/27/1998, Vol. 73 Issue 4 

    The applications of magnetic direct generation, a noncontact technique for generating acoustic waves, are limited by poor transduction efficiency. This letter describes an approach for substantially improving the transduction efficiency by application of a transduction format, enhanced direct...

  • A study of nasometric values for normal nasal resonance. Seaver, Earl J.; Dalston, Roger M. // Journal of Speech & Hearing Research;Aug91, Vol. 34 Issue 4, p715 

    Presents a study on nasometric values for normal nasal resonance. Nasal acoustic energy in speech; Reading passages; Gender-related differences; Implications on the assessment of velopharyngeal function; Research implications.

  • Generation of coherent acoustic phonons in strained GaN thin films. Huang, Yue-Kai; Chern, Gia-Wei; Sun, Chi-Kuang; Smorchkova, Yulia; Keller, Stacia; Mishra, Umesh; DenBaars, Steven P. // Applied Physics Letters;11/12/2001, Vol. 79 Issue 20, p3361 

    Coherent acoustic phonon oscillations were generated and studied in strained GaN thin films. Inside the bulk GaN film, the longitudinal interference of an ultraviolet femtosecond pump pulse created periodic carrier distribution that screened out the strain-induced piezoelectric field and...

  • Magnetic phase transition of gadolinium studied by acoustically detected magnetocaloric effect. Glorieux, C.; Caerels, J.; Thoen, J. // Journal of Applied Physics;9/15/1996, Vol. 80 Issue 6, p3412 

    Deals with a study which investigated the ferromagnetic to paramagentic phase transition of gadolinium by means of novel acoustic detection technique of magnetically induced temperature oscillations. Information on the magnetic properties of gadolinium; Methodology of the study; Results and...

  • Giant magnetoacoustic effect in KMnF[sub 3] due to nuclear spin waves. Bogdanova, Kh. G.; Golenishchev-Kutuzov, V. A.; Leont’ev, V. E.; Nazipov, M. R.; Shakirzyanov, M. M.; Kurkin, M. I.; Petrov, S. V. // Journal of Experimental & Theoretical Physics;May99, Vol. 88 Issue 5, p947 

    An explanation is proposed for the gigantic magnetoacoustic effect that we observed in KMnF[sub 3] in previous work {Kh. G. Bogdanova, V. A. Golenishchev-Kutuzov, M. I. Kurkin et al., Zh. Eksp. Teor. Fiz. 112, 1830 (1997) [JETP 85, 1001 (1997)]}. The effect entails a tenfold amplitude reduction...

  • Synthesis of chloro(2-methylimidazole) ruthenium(III) complexes and their aqueous solution chemistry, and the crystal structure of [2-MeImH][sub 2] [RuCl[sub 5] 2-MeIm]. Anderson, Craig // Canadian Journal of Chemistry;Oct2001, Vol. 79 Issue 10, p1477 

    2-Methylimidazole (2-MeIm) reacts with RuCl[sub 3] in aqueous acidic ethanolic medium to give (2-MeImH)[sub 2] [RuCl[sub 5] (2-MeIm)] (1) and (2-MeImH)[RuCl[sub 4] (2-MeIm)[sub 2] ] (2) (2-MeImH = protonated 2-methylimidazole), the ratio depending on reaction conditions used. Molecule 1...

  • Paramagnetic resonance evidence for fluctuations in the crystal near the solid to liquid crystal transition in p-(methoxybenzlidene) amino phenyl acetate. Owens, F. J. // Journal of Chemical Physics;3/15/1985, Vol. 82 Issue 6, p2779 

    A pronounced broadening of the lines and a decrease in the hyperfine tensor components of the EPR spectrum of vanadyl acetylacetonate (VAA) doped into the crystalline phase of the nematic liquid crystal p-methoxybenzlidene amino phenyl acetate is observed as the temperature of the solid...

  • Effect of Acoustic Strain on the Radiation-Induced Luminescence of Pyrolithic Boron Nitride. Kardashev, B. K.; Demenkov, P. V.; Plaksin, O. A.; Stepanov, V. A.; Stepanov, P. A.; Chernov, V. M. // Physics of the Solid State;Nov2001, Vol. 43 Issue 11, p2087 

    A study is reported on the effect of ultrasound vibrations of an approximate frequency of 100 kHz on the radiation-induced luminescence generated in pyrolytic boron nitride by proton irradiation (8 MeV energy, 1.6×10[sup 12]p/cm[sup 2] s flux). The influence of ultrasound vibrations...

  • Quasi-solitonic Propagation Modes of Two-Component Acoustic Video Pulses in a Paramagnetic Crystal. Voronkov, S. V.; Sazonov, S. V. // Physics of the Solid State;Nov2001, Vol. 43 Issue 11, p2051 

    Nonlinear propagation of longitudinal–transverse acoustic pulses down to a length of one cycle (video pulses) in a low-temperature paramagnetic crystal in the direction parallel to an external magnetic field is investigated theoretically. The case of a crystal with paramagnetic impurity...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics