Results 61 to 70 of about 58,553 (356)

Multidimensional item response theory and the Brief Electricity and Magnetism Assessment

Physical Review Physics Education Research, 2021
This work is the fourth of a series of papers applying multidimensional item response theory (MIRT) to widely used physics conceptual assessments. This study applies MIRT analysis using both exploratory and confirmatory methods to the Brief Electricity ...
John Hansen, John Stewart
doaj   +1 more source

Understanding the Effect of Resistance Temperature Detector Temperature Controllers on Microstructural Alignment in Magnetic Freeze Casting

Advanced Engineering Materials, EarlyView.
The effect of temperature controllers that are commonly used in freeze‐casting is investigated in this work. Temperature controllers are observed to generate a voltage in the slurry. Microstructural alignment and ultimate compressive strength data show this voltage to interfere with the ability to align the microstructure using magnetic fields ...
Maddie A. Schmitz, Steven E. Naleway
wiley   +1 more source

Longitudinal study of student conceptual understanding in electricity and magnetism

Physical Review Special Topics. Physics Education Research, 2009
We have investigated the long-term effect of student-centered instruction at the freshman level on juniors’ performance on a conceptual survey of Electricity and Magnetism (E&M).
S. J. Pollock
doaj   +2 more sources

Composite Electrospun Fibers Containing Optimized B‐ and Cu‐Doped Bioactive Glass Sol‐Gel Particles for Potential Soft Tissue Engineering Applications

Advanced Engineering Materials, EarlyView.
This article describes the preparation and characterization of poly(ε‐caprolactone) electrospun composite fibers incorporating sol‐gel‐derived bioactive glass particles doped with B and Cu. Scanning electron microscopy, energy‐dispersive X‐ray spectroscopy, Fourier‐transform infrared spectroscopy, contact angle, acellular bioactivity, mechanical and ...
Elisa Piatti, Marta Miola, Liliana Liverani, Paolo Sartori, Enrica Verné, Aldo R. Boccaccini   +5 more
wiley   +1 more source

The Lorentz Force and the Radiation Pressure of Light [PDF]

, 2008
In order to make plausible the idea that light exerts a pressure on matter, some introductory physics texts consider the force exerted by an electromagnetic wave on an electron.
Jackson John D., Maxwell James C., Planck Max, Stephen Boughn, Tony Rothman   +4 more
core   +3 more sources

Effects of Carbon Nanoparticles on Triboelectro‐Induced Surface Defects

Advanced Engineering Materials, EarlyView.
Carbon nanoparticles added to grease modify the electrocontact behavior. The synergy of particle concentration and electric current dominates the surface damage of metals in contact. Electrical surface damage caused by current leakage is a critical challenge in high‐performance applications such as electric vehicle (EV) drivetrains and wind turbine ...
Mohsen Tajedini, Lu Fang, Jacob Bons, Mohammad Humaun Kabir, Evan Johnson, Joe Kosmoski, Hong Liang   +6 more
wiley   +1 more source

Reply to “Comment on “Benefits of completing homework for students with different aptitudes in an introductory electricity and magnetism course””

Physical Review Physics Education Research, 2016
We reply to Rieger, Reinsberg, and Wieman’s forgoing Comment [Phys. Rev. Phys. Educ. Res., Comment on “Benefits of completing homework for students with different aptitudes in an introductory electricity and magnetism course” 12, 028001 (2016)].
F. J. Kontur, K. de La Harpe, N. B. Terry   +2 more
doaj   +1 more source

Bimetallic (NiFe) and Trimetallic (NiFeCr) Nanoalloys from Metal Oxides Using a Microwave Hydrogen Plasma

Advanced Engineering Materials, EarlyView.
Bimetallic (NiFe) and trimetallic (NiFeCr) nanoalloys (NAs) are synthesized using corresponding oxide mixtures using microwave hydrogen plasma within a few milliseconds. The process simultaneously 1) reduces metal oxides to metals; 2) downsizes the particles from micrometers to nanometers; and 3) blends the metals to form NAs.
Sachin Kumar, Mohammad Kazemi, Zichang Xiong, Thomas Cameron, Julian Held, Uwe Kortshagen   +5 more
wiley   +1 more source

Advances in ab-initio theory of Multiferroics. Materials and mechanisms: modelling and understanding

, 2012
Within the broad class of multiferroics (compounds showing a coexistence of magnetism and ferroelectricity), we focus on the subclass of "improper electronic ferroelectrics", i.e.
A. Girlando, A. Malashevic, A. Rohrbach, A. Savin, A. Seidl, A. Stroppa, A. Stroppa, A. Stroppa, A. Stroppa, A. Stroppa, A.D. Becke, A.K. Cheetham, A.K. Kirov, A.P. Kuzmenko, A.P. Levanyuk, A.V. Kimel, B. Lorenz, B.J. Campbell, C. Adamo, C. Capillas, C. Capillas, C. Capillas, C. Ederer, C. Ederer, C. Loschen, C.N.R. Rao, D. Baldomir, D. Khomskii, D. Orobengoa, D. Vanderbilt, D.I. Khomskii, D.V. Efremov, E. Bousquet, E. Bousquet, E. Kroumova, E. Kroumova, E. Kroumova, E. Kroumova, E.J.W. Verwey, E.M. Wheeler, F. Hong, F. Kagawa, F. Kagawa, F. Kubel, F. Nad, G. Férey, G. Férey, G. Giovannetti, G. Giovannetti, G. Giovannetti, G. Giovannetti, G. Giovannetti, G. King, G. King, G. King, G. King, G. King, G. Kresse, G. Kresse, G. Kresse, G. Lawes, G. Rogez, G.P. Vorobev, H. Katsura, H. Okamoto, H. Schmidt, H. Tsunetsugu, H. Wu, H.F. Clausen, I.A. Sergienko, I.A. Sergienko, I.B. Bersuker, I.J. Dzialoshinski, I.V. Solovyev, J. Adhish, J. Brink van den, J. Hemberger, J. Heyd, J. Heyd, J. Hong, J. Kanamori, J. Lopez-Prez, J. Paier, J. Valasek, J. Wang, J.A. Alonso, J.B. Goodenough, J.B. Torrance, J.B. Torrance, J.F. Scott, J.H. Lee, J.L. Garcia-Munoz, J.M. Perez-Mato, J.M. Perez-Mato, J.M. Perez-Mato, J.M. Rondinelli, J.M. Rondinelli, J.M. Rondinelli, J.M. Rondinelli, J.P. Perdew, K. Yamauchi, K. Yamauchi, K. Yamauchi, K. Yamauchi, K.-L. Hu, K.-L. Hu, K.I. Kugel, L. Holmes, L. Neel, L. Noodleman, L. Noodleman, L. Noodleman, L. Noodleman, L.C. Chapon, M. Alexe, M. Belakhovsky, M. Cointe Le, M. Dressel, M. Filatov, M. Marsman, M. Matsubara, M. Mostovoy, M. Reehuis, M.A. black, M.I. Aroyo, M.I. Aroyo, M.J. Rosseinsky, M.T. Fernandez-Diaz, M.W. Licurse, N. Keller, N.A. Benedek, N.A. Benedek, N.A. Hill, N.A. Spaldin, N.B. Perkins, N.J. Mosey, O. Tchernyshyov, O.M. Yaghi, P. Barone, P. García, P. Ghosez, P. Hohenberg, P. Jain, P.E. Blochl, P.J. Hay, P.J. Stephens, P.W. Anderson, P.W. Anderson, P.W. Anderson, R. Ramesh, R. Ramesh, R. Resta, R. Valdes-Aguilar, R. Wojciechowski, R.D. King-Smith, R.E. Cohen, R.L. Withers, S. Blanco-Canosa, S. Garcia-Martin, S. Garcia-Martin, S. Horiuchi, S. Horiuchi, S. Horiuchi, S. Horiuchi, S. Ishibashi, S. Ishiwata, S. Ivantchev, S. Ivantchev, S. Kummel, S. Picozzi, S. Picozzi, S. Picozzi, S. Valencia, S. Weber, S.C. Parida, S.J. Luo, S.L. Gnatchenko, S.W. Cheong, T. Fukushima, T. Fukushima, T. Fukushima, T. Hoffmann, T. Kimura, T. Kurumaji, T. Moriya, T. Smith, T. Zhao, T.-Y. Khim, V. Pardo, V.I. Anisimov, V.I. Anisimov, V.Y. Pomjakushin, W. Dachraoui, W. Kohn, X.-Y. Wang, Y. Du, Y. Miyamoto, Y. Nakatsuka, Y. Okimoto, Y. Takano, Y. Tokunaga, Y. Tokunaga, Y. Tokura, Y. Yamasaki, Z.G. Soos   +204 more
core   +1 more source

Thermoelectric Modules Incorporating MgAgSb and Mg3(Sb,Bi)2 Synthesized Using a Melting Method

Advanced Engineering Materials, EarlyView.
A scalable synthesis method for a thermoelectric material of MgAgSb is established. A thermoelectric power module of MgAgSb/Mg3(Sb,Bi)2 is fabricated, showing the conversion efficiency of 7.4% at ΔT = 315 K. The performance is comparable to conventional Bi2Te3 modules when they are operated with an air‐cooled heat exchanger.
Kazuo Nagase, Hironori Ohshima, Kunihiro Kihou, Haruno Kunioka, Ushin Anazawa, Ryosuke Sakagami, Yosuke Goto, Masayuki Murata, Chul‐Ho Lee   +8 more
wiley   +1 more source