Direct Observation of Long-Term Durability of Superconductivity in YBa2_2Cu3_3O7_7-Ag2_2O Composites

We report direct observation of long-term durability of superconductivity of several YBa$_2$Cu$_3$O$_7$-Ag$_2$O composites that were first prepared and studied almost 14 years ago [J. J. Lin {\it et al}., Jpn. J. Appl. Phys. {\bf 29}, 497 (1990)]. Remeasurements performed recently on both resistances and magnetizations indicate a sharp critical transition temperature at 91 K. We also find that such long-term environmental stability of high-temperature superconductivity can only be achieved in YBa$_2$Cu$_3$O$_7$ with Ag$_2$O addition, but not with pure Ag addition.Comment: to be published in Jpn. J. Appl. Phy

Tooth-shaped plasmonic waveguide filters with nanometeric sizes

A novel nanometeric plasmonic filter in a tooth-shaped Metal-Insulator-Metal waveguide is proposed and demonstrated numerically. An analytic model based on the scattering matrix method is given. The result reveals that the single tooth-shaped filter has a wavelength filtering characteristic and an ultra-compact size in the length of a few hundred nanometers, compared to grating-like SPPs filters. Both analytic and simulation results show that the wavelength of the trough of the transmission has linear and nonlinear relationships with the tooth depth and the tooth width, respectively. The waveguide filter could be utilized to develop ultra-compact photonic filters for high integration.Comment: 16 pages, 5 figure

Numerical Modeling of a Teeth-shaped Nano-plasmonic Waveguide Filter

In this paper, tooth-shaped and multiple-teeth-shaped plasmonic filters in the metal-insulator-metal (MIM) waveguides are demonstrated numerically. By introducing a three-port waveguide splitter, a modified model based on the multiple-beam-interference and the scattering matrix is given. The ransmittance spectrum as a function of teeth width, depth, period and period number are respectively addressed. The result shows the new structure not only performs the filtering function as well as MIM grating-like structures, but also is of submicrometer size for ultra-high integration and relatively easy fabrication.Comment: 21pages, 7 figure

Pigmented basal cell carcinoma of the eyelid in Hispanics

Lily Koo Lin1, Han Lee2, Eli Chang11Department of Oculoplastics, Doheny Eye Institute, Los Angeles, CA, USA; 2Department of Dermatology, Keck School of Medicine of the University of Southern California, Los Angeles, CA, USABackground: Pigmented basal cell carcinoma (PBCC) of the eyelid has not been well cited in the literature, and is often overlooked in the differential diagnosis of pigmented eyelid lesions. We aim to describe PBCC of the eyelid in Hispanic patients.Methods: Retrospective review of patients with eyelid skin cancer who presented to the Department of Dermatology at the Keck School of Medicine of the University of Southern California and the Doheny Eye Institute from January 2002 to November 2005.Results: Sixty-nine of the 79 patients with eyelid skin cancer had basal cell carcinoma. Eight of these patients were Hispanic. Four of the eight Hispanic patients had PBCC.Conclusions: Although eyelid PBCC is regarded as a rare condition, it may occur more commonly in the Hispanic population and should be remembered in the differential diagnosis of pigmented eyelid lesions.Keywords: pigmented basal cell carcinoma, eyelid, skin cancer, lesion

70.3: Current‐Scaling a‐Si:H TFT Pixel Electrode Circuit for AM‐OLEDs

We fabricated and characterized the amorphous silicon thin‐film transistor (a‐Si:H TFT) pixel electrode circuit with currentscaling function that can be used for active‐matrix organic lightemitting displays (AM‐OLEDs). As expected from previously reported simulation results, fabricated circuit showed an acceptable current‐scaling performance for a high‐resolution AM‐OLED based on a‐Si:H TFTs.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/92085/1/1.2451422.pd

Does Product Type Affect Electronic Word-of-Mouth Richness Effectiveness? Influences of Message Valence and Consumer Knowledge

Drawing on the information richness theory, this study attempts to address how valence of electronic word-of-mouth (eWOM), product type and consumer knowledge will yield different levels of eWOM richness. The results based on an experimental study suggest that negative eWOM has a stronger effect in producing eWOM information richness than does positive eWOM, and such effect is more pronounced for a leisure farm tour (experience goods) than for digital camera (search goods). The tendency that negative eWOM will provide richer information for the leisure farm tour is more evident for high-knowledge consumers than for low-knowledge consumers. The study’s results caution against the aggravated harm of negative eWOM incurred from the dissatisfactory experience of a leisure farm tour