Z. H. Zhu

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Heroin abuse is a major social and public health problem in many parts of the world, yet relatively little is known about its etiology. Although genes play a role in determining susceptibility, they are expected to be of small effect with considerable heterogeneity. Because the dopamine system is involved in reward, its neurotransmitter receptors are(More)
We report on near infrared semiconductor nanopatch lasers with subwavelength-scale physical dimensions (0.019 cubic wavelengths) and effective mode volumes (0.0017 cubic wavelengths). We observe lasing in the two most fundamental optical modes which resemble oscillating electrical and magnetic dipoles. The ultra-small laser volume is achieved with the(More)
A one-dimensional diatomic meta-chain with equal-size holes and different-length slits is designed. Broadband coherent magnetic plasmon waves (MPW) are formed in such a system, excited by both the electric resonance in the slits and the magnetic resonance in the holes in a wide range of incidence angles (0 40   ) and broad frequency bands (200–230 THz).(More)
In this paper, we will propose that magnetic-resonance nanostructures in a metal surface could be used to realize extraordinary optical transmission ͑EOT͒. Toward this goal, we designed and fabricated a one-dimensional diatomic chain of slit-hole resonator ͑SHR͒. Due to the strong exchange current interaction, a type of magnetic plasmon ͑MP͒ propagation(More)
DØ has measured the inclusive production cross section of W and Z bosons in a sample of 13 pb −1 of data collected at the Fermilab Tevatron. The cross sections, multiplied by their leptonic branching fractions, for production in p¯ p collisions at √ s = 1.8 TeV are σ W B(W → eν) = 2.36 ± 0.02 ± 0.08 ± 0.13 nb,
We demonstrate the mode locking of external-cavity semiconductor lasers by using a saturable Bragg reflector as an external reflector. Output pulses of 1.9 ps were generated from the semiconductor lasers without dispersion compensation. By coupling the output to a standard single-mode filter with a length of 35 m to compensate for the linear chirp, we have(More)