Advancing on previous reports, we utilize quasi-bound states in the continuum (q-BICs) supported by a metasurface of TiO meta-atoms with broken inversion symmetry on an SiO substrate, for two possible applications. Firstly, we demonstrate that by tuning the metasurface's asymmetric parameter, a spectral overlap between a broad q-BIC and a narrow magnetic dipole resonance is achieved, yielding an electromagnetic induced transparency analogue with a 50 μs group delay. Secondly, we have found that, due to the strong coupling between the q-BIC and WS exciton at room temperature and normal incidence, by integrating a single layer of WS to the metasurface, a 37.
View Article and Find Full Text PDFPurpose: The purpose of this paper is to report on changes in overall survival, progression-free survival, and complete cytoreduction rates in the 5-year period after the implementation of a multidisciplinary surgical team (MDT).
Methods: Two cohorts were used. Cohort A was a retrospectively collated cohort from 2006 to 2015.
Acute colonic pseudo-obstruction (ACPO) is an infrequent occurrence after cesarean section. Anecdotal evidence suggests that the clinical course of ACPO in the obstetric setting is different to that seen in non-pregnant adult patients with ACPO secondary to alternative causes, such as systemic illnesses, the use of certain medications, and after non-abdominal surgery. The risk of progression to ischemia and perforation, as well as the need for emergency surgery, appears to be higher after cesarean section.
View Article and Find Full Text PDFNanoparticle-on-mirror systems are a stable, robust, and reproducible method of squeezing light into sub-nanometer volumes. Graphene is a particularly interesting material to use as a spacer in such systems as it is the thinnest possible 2D material and can be doped both chemically and electrically to modulate the plasmonic modes. We investigate a simple nanoparticle-on-mirror system, consisting of a Au nanosphere on top of an Au mirror, separated by a monolayer of graphene.
View Article and Find Full Text PDFIntroduction: There is resurging interest in the importance of effective, nuanced insufflation and personalised pneumoperitoneal pressure-management during laparoscopy. Here, we present user-evaluation data from a regulated, prospective, multispecialty study of a new insufflator (EVA-15, Palliare, Galway, Ireland) which provides high-frequency pressure-sensing, built-in smoke evacuation with pedal activation and highly responsive, high-flow gas provision.
Methods: With institutional ethics and regulatory body approval, a non-randomised, prospective clinical investigation was performed on 30 subjects undergoing laparoscopic surgery using an EVA-15 device.