• Ultralow-crosstalk, strictly non-blocking microring-based optical switch 

  Cheng, Qixiang; Dai, Liang Yuan; Abrams, Nathan C.; Hung, Yu-Han; Morrissey, Padraic E.; Glick, Madeleine; O'Brien, Peter; Bergman, Keren (Optical Society of America, 2019-01-16)

  We report on the first monolithically integrated microring-based optical switch in the switch-and-select architecture. The switch fabric delivers strictly non-blocking connectivity while completely canceling the first-order ...
• Wandering spurs in MASH 1-1 delta-sigma modulators 

  Donnelly, Yann; Kennedy, Michael Peter (Institute of Electrical and Electronics Engineers (IEEE), 2019-01-29)

  Wandering spurs are a little-studied phenomenon seen in MASH and SQ-digital delta-sigma modulators. They take the form of frequency-modulated spurs which periodically appear in-band. Since modulators are often employed as ...
• Low threshold lasing in InP/GaInP quantum dot microdisks 

  Lebedev, D. V.; Vlasov, A. S.; Kulagina, M. M.; Troshkov, S. I.; Guseva, Y. A.; Pelucchi, Emanuele; Gocalinska, Agnieszka; Juska, Gediminas; Romanova, A. Y.; Buriak, P. A.; Smirnov, V. I.; Shelaev, A. V.; Bykov, V. A.; Mintairov, A. M. (Pleiades Publishing, Ltd., 2018-12-27)

  We report a realization of room temperature lasing threshold of 1 μW in GaInP microdisk containing a few self-aggregated InP/GaInP quantum dots (QDs) grown by metal-organic vapor phase epitaxy. InP/GaInP QD microdisk ...
• Standardization of research methods employed in assessing the interaction between metallic-based nanoparticles and the blood-brain barrier: Present and future perspectives 

  Ross, Aisling M.; McNulty, David; O'Dwyer, Colm; Grabrucker, Andreas M.; Cronin, Patrick; Mulvihill, John J. E. (Elsevier, 2019-01-18)

  Treating diseases of the central nervous system (CNS) is complicated by the presence of the blood-brain barrier (BBB), a semipermeable boundary layer protecting the CNS from toxins and homeostatic disruptions. However, ...
• Effect of Cu doping on the anatase-to-rutile phase transition in TiO2 photocatalysts: theory and experiments 

  Byrne, Ciara; Moran, Lorraine; Hermosilla, Daphne; Merayo, Noemí; Blanco, Ángeles; Rhatigan, Stephen; Hinder, Steven; Ganguly, Priyanka; Nolan, Michael; Pillai, Suresh C. (Elsevier, 2019-01-22)

  This paper shows that incorporation of Cu inhibits the anatase to rutile phase transition at temperatures above 500 °C. The control sample, with 0% Cu contained 34.3% anatase at 600 °C and transitioned to 100% rutile by ...

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