Now showing items 283-302 of 362

    • Seasonal changes in morphology govern wettability of Katsura leaves 

      Kang, Hosung; Graybill, Philip M.; Fleetwood, Sara; Boreyko, Jonathan B.; Jung, Sunghwan (PLOS, 2018-09-27)
      Deciduous broad-leaf trees survive and prepare for winter by shedding their leaves in fall. During the fall season, a change in a leaf's wettability and its impact on the leaf-fall are not well understood. In this study, ...
    • Self-assembled NaNbO3-Nb2O5 (ferroelectric-semiconductor) heterostructures grown on LaAlO3 substrates 

      Wang, Zhiguang; Li, Yanxi; Chen, Bo; Viswan, Ravindranath; Li, Jiefang; Viehland, Dwight D. (AIP Publishing, 2012-09-01)
      We deposited NaNbO3 (NNO)-Nb2O5 (NO) self-assembled heterostructures on LaAlO3 (LAO) to form ferroelectric-semiconductor vertically integrated nanostructures. The NNO component formed as nanorods embedded in a NO matrix. ...
    • Self-biased magnetoelectric response in three-phase laminates 

      Yang, Su-Chul; Park, Chee-Sung; Cho, Kyung-Hoon; Priya, Shashank (American Institute of Physics, 2010-11-01)
      This study reports the experimental observation and analysis of self-biased magnetoelectric (ME) effect in three-phase laminates. The 2-2 L-T mode laminates were fabricated by attaching nickel (Ni) plates and ME particulate ...
    • Sensitivity Enhancement in Magnetic Sensors Based on Ferroelectric-Bimorphs and Multiferroic Composites 

      Sreenivasulu, Gollapudi; Qu, Peng; Petrov, Vladimir; Qu, Hongwei; Srinivasan, Gopalan (MDPI, 2016-02-20)
      Multiferroic composites with ferromagnetic and ferroelectric phases have been studied in recent years for use as sensors of AC and DC magnetic fields. Their operation is based on magneto-electric (ME) coupling between the ...
    • Shear-mode magnetostrictive/piezoelectric composite with an enhanced magnetoelectric coefficient 

      Wang, Yaojin; Hasanyan, Davresh J.; Li, Jiefang; Viehland, Dwight D.; Luo, Haosu (AIP Publishing, 2012-05-01)
      A magnetoelectric (ME) laminate heterostructure consisting of two shear-mode piezoelectric Pb(Mg1/3Nb2/3)O-3-30PbTiO(3) (PMN-PT) single crystal layers, a longitudinally magnetized magnetostrictive Tb0.3Dy0.7Fe1.92 alloy ...
    • Shifting the operating frequency of magnetoelectric sensors 

      Petrie, Jonathan; Gray, David; Viehland, Dwight D.; Sreenivasulu, Gollapudi; Srinivasan, Gopalan; Mandal, Sanjay; Edelstein, Alan S. (American Institute of Physics, 2012-04-01)
      A method is presented for increasing the operating frequency of symmetric and asymmetric magnetoelectric (ME) sensors so that the operating frequency can be equal to the mechanical resonance frequency of the sensor. This ...
    • Simplifications in the x‐ray line‐shape analysis 

      Adler, Thomas; Houska, Charles R. (American Institute of Physics, 1979)
      It is shown that a Fourier series associated with the Warren‐Averbach line‐shape analysis can be fitted with only five parameters to a pair of peaks. These interrelate the Fourier coefficients and thereby provide a simplified ...
    • A simplified procedure for obtaining relative x‐ray intensities when a texture and atomic displacements are present 

      He, Baoping; Rao, Satish I.; Houska, Charles R. (American Institute of Physics, 1994-05-01)
      The orientation problem in polycrystalline cubic materials has been simplified, using fundamental relationships, so that the determination of a quantitative interrelationship between the various Bragg peak intensities is ...
    • Single Mode Air-Clad Single Crystal Sapphire Optical Fiber 

      Hill, Cary; Homa, Dan; Yu, Zhihao; Cheng, Yujie; Liu, Bo; Wang, Anbo; Pickrell, Gary (MDPI; MDPI, 2017-05-03)
      The observation of single mode propagation in an air-clad single crystal sapphire optical fiber at wavelengths at and above 783 nm is presented for the first time. A high-temperature wet acid etching method was used to ...
    • Size effects of 0.8SrBi(2)Ta(2)O(9)-0.2Bi(3)TiNbO(9) thin films 

      Zhu, Jinsong; Zhang, Xubai; Zhu, Yongfei; Desu, Seshu B. (American Institute of Physics, 1998-02-01)
      The size effects of 0.8SrBi(2)Ta(2)O(9)-0.2Bi(3)TiNbO(9) thin films, prepared by metalorganic deposition technique, were studied by determining how the ferroelectric properties vary with film thickness and grain size. It ...
    • Small dc magnetic field response of magnetoelectric laminate composites 

      Dong, Shuxiang; Zhai, Junyi; Li, Jiefang; Viehland, Dwight D. (AIP Publishing, 2006-02-01)
      We have found that small long-type magnetoelectric (ME) laminate composites of magnetostrictive Tb1-xDyxFe2-y and piezoelectric Pb(Zr,Ti)O-3 are quite sensitive to small dc magnetic field (H-dc) variations, when driven by ...
    • A small, linear, piezoelectric ultrasonic cryomotor 

      Dong, Shuxiang; Yan, Li; Wang, Naigang; Viehland, Dwight D.; Jiang, Xiaoning; Rehrig, P.; Hackenberger, Wesley S. (AIP Publishing, 2005-01-01)
      A small, linear-type, piezoelectric ultrasonic cryomotor has been developed for precision positioning at extremely low temperatures (greater than or equal to-200 degreesC). This cryornotor consists of a pair of ...
    • Soft phonon columns on the edge of the Brillouin zone in the relaxor PbMg1/3Nb2/3O3 

      Swainson, I. P.; Stock, Chris; Gehring, Peter M.; Xu, Guangyong; Hirota, K.; Qiu, Y.; Luo, Hongjie; Zhao, X.; Li, Jiefang; Viehland, Dwight D. (American Physical Society, 2009-06-10)
      We report lattice-dynamical measurements, made using neutron inelastic-scattering methods, of the relaxor perovskite PbMg1/3Nb2/3O3 (PMN) at momentum transfers near the edge of the Brillouin zone. Unusual "columns" of ...
    • Sound-resonance hydrogen sensor 

      Dong, Shuxiang; Bai, Feiming; Li, Jiefang; Viehland, Dwight D. (AIP Publishing, 2003-06-01)
      A hydrogen sensor is reported in which a small piezoelectric-sound-resonance-cavity (PSRC) is used as the sensing element. Detection utilizes sound resonance and acoustic property differences between H-2 and air as a sensing ...
    • Sputtering from a porous material by penetrating ions 

      Rodriguez-Nieva, J. F.; Bringa, Eduardo M.; Cassidy, T. A.; Johnson, R. E.; Caro, Alfredo; Fama, M.; Loeffler, M. J.; Baragiola, R. A.; Farkas, Diana (IOP Publishing Ltd., 2011-12-01)
      Porous materials are ubiquitous in the universe and weathering of porous surfaces plays an important role in the evolution of planetary and interstellar materials. Sputtering of porous solids in particular can influence ...
    • Stability of glassy and ferroelectric states in the relaxors PbMg1/3Nb2/3O3 and PbMg1/3Nb2/3O3-12% PbTiO3 

      Colla, Eugene V.; Vigil, D.; Timmerwilke, J.; Weissman, Michael B.; Viehland, Dwight D.; Dkhil, B. (American Physical Society, 2007-06-05)
      The stability of the disordered glassy phase in the relaxors PbMg1/3Nb2/3O3 and (PbMg1/3Nb2/3O3)(0.88)(PbTiO3)(0.12), called PMN and PMN-PT, was investigated by preparing partially polarized samples and allowing them to ...
    • Strain-induced grain growth and rotation in nickel nanowires 

      Monk, J.; Farkas, Diana (American Physical Society, 2007-01-10)
      Virtual tensile tests of nanocrystalline nickel wires of initial 5 nm grain size were simulated at strain rates varying from 3x10(7) s(-1) to 1x10(9) s(-1) at 300 K, reaching deformation levels up to 36%. The virtual tensile ...
    • Stress reconfigurable tunable magnetoelectric resonators as magnetic sensors 

      Kiser, Jillian; Finkel, Peter; Gao, Junqi; Dolabdjian, Christophe; Li, Jiefang; Viehland, Dwight D. (AIP Publishing, 2013-01-01)
      We report a magnetoelastic effect in doubly clamped ferromagnetic magnetostrictive Metglas resonators with electrically and magnetically reconfigurable frequency response. The field-induced resonance frequency shift is due ...
    • Stress-controlled Pb(Zr0.52Ti0.48)O-3 thick films by thermal expansion mismatch between substrate and Pb(Zr0.52Ti0.48)O-3 film 

      Han, Guifang; Ryu, Jungho; Yoon, Woon-Ha; Choi, Jong-Jin; Hahn, Byung-Dong; Kim, Jong-Woo; Park, Dong-Soo; Ahn, Cheol-Woo; Priya, Shashank; Jeong, Dae-Yong (American Institute of Physics, 2011-12-15)
      Polycrystalline Pb(Zr0.52Ti0.48)O-3 (PZT) thick films (thickness similar to 10 mu m) were successfully fabricated by using a novel aerosol deposition technique on Si wafer, sapphire, and single crystal yitria stabilized ...
    • Strong magnetoelectric charge coupling in stress-biased multilayer-piezoelectric/magnetostrictive composites 

      Dong, Shuxiang; Zhai, Junyi; Li, Jiefang; Viehland, Dwight D.; Summers, Eric (American Institute of Physics, 2007-06-15)
      A magnetoelectric composite consisting of a multilayer Pb(Zr,Ti)O-3 piezoelectric (d(33)) stack and a magnetostrictive (Galfenol and/or Terfenol-D) rod assembled in a prestressed frame in a longitudinal-longitudinal ...