Displacement Sensing of an Active String Actuator Using a Step-Index Multimode Optical Fiber Sensor.

A thin McKibben artificial muscle is a pneumatic actuator with an outer diameter of only 1.8 mm. We fabricated a string-shaped actuator called an "active string actuator," which achieves a high contractile displacement by accumulating thin McKibben artificial muscles.

Fermi surface in La-based cuprate superconductors from Compton scattering imaging.

Compton scattering provides invaluable information on the underlying Fermi surface (FS) and is a powerful tool complementary to angle-resolved photoemission spectroscopy and quantum oscillation measurements. Here we perform high-resolution Compton scattering measurements for LaSrCuO with x = 0.08 (T = 20 K) at 300 K and 150 K, and image the momentum distribution function in the two-dimensional Brillouin zone.

Magnetoelectric effect driven by magnetic domain modification in LuFe2O4.

The magnetocapacitance effect was investigated using impedance spectroscopy on single crystals of LuFe(2)O(4). The intrinsic impedance response could be separated from the interfacial response and showed a clear hysteresis loop below T(Ferri)∼240  K under the magnetic field. The neutron diffraction experiment under the magnetic field proves the origin of the dielectric property related to the motion of the nanosized ferromagnetic domain boundary.