The use of digital microfluidics for a silicon photonic sensors platform

status: publishe

Silicon photonics biosensing: different packaging platforms and applications

We present two different platforms integrating silicon photonic biosensors. One is based on integration with reaction tubes to be compatible with traditional lab approaches. The other uses through-chip fluidics in order to achieve better mixing of the analyte

Vertical liquid controlled adiabatic waveguide coupler

A broadband vertical liquid controlled optical waveguide coupler (LCC) is demonstrated. The fabricated vertical LCC with silicon nitride (SiN) waveguides can switch light between 2 stacked photonic circuit layers with zero energy consumption in a steady switch state. In combination with low-loss interlayer waveguide crossovers they enable large scale non-volatile switch circuits with low loss. The fabricated vertical LCC has a loss less than 2.0 dB in bar state and less than 2.6 dB in cross state over the telecommunication wavelength range 1260 nm to 1630 nm. Interlayer waveguide crossovers with the same interlayer oxide thickness as the LCC have a loss less than 0.06 dB over the same wavelength range. The crosstalk of the LCC is less than 21 dB over the wavelength range 1500 nm to 1630 nm for both bar and cross state. (c) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreemen

Silicon nanophotonic ring resonators sensors integrated in reaction tubes

Enzyme-linked immunosorbent assays (ELISA) are the most popular immunoassay techniques performed every day in hospitals and laboratories and they are used as a diagnostic tool in medicine and plant pathology, as well as a quality-control check in various industries. However, complex labeling techniques are required to be able to perform the assay and non-specific binding and endpoint timing are difficult to optimize. These issues could be solved by label-free techniques such as silicon nanophotonic microring resonator sensors, but this platform requires complex microfluidics, which is very much removed from the daily practice in e. g. hospital labs, which still relies to a large degree on platforms like 96-well microtiter plates or reaction tubes. To address these issues, here, we propose the combination of a simple and compatible reaction tube platform with label free silicon-on-insulator (SOI) photonic biosensors, where the flow is through the sensor chip as opposed to over the chip as in more conventional approaches. This device allows real time detection and analysis. Its great flexibility and small footprint make it ideal for an easy handling in any laboratory

¿Qué comprensión de las conceptualizaciones del concepto de límite alcanzan los futuros profesores de matemáticas en bachillerato?

El póster contiene un resumen de una investigación de tipo experimental que se está desarrollando con 12 alumnos del máster de secundaria (4 arquitectos, 4 ingenieros y 4 matemáticos) sobre el concepto de límite. Se considera el marco teórico MKT (Ball, Thames y Phelps, 2008) relativo al conocimiento común y especializado del contenido, y las concepciones del límite intuitiva, aproximación óptima (Blázquez y Ortega, 2002) y métrica

Evaluación a la planificación presupuestaria del Gobierno Autónomo Descentralizado Parroquial Rural de Baños en el período 2012-2013

En base a la normativa vigente se procedió a la “Evaluación a la Planificación Presupuestaria del Gobierno Autónomo Descentralizado Parroquial Rural de Baños en el período 2012 - 2013”, cuyo objetivo principal fue determinar si las metas y objetivos se cumplieron acorde a lo proyectado aplicando los indicadores de eficiencia, eficacia y efectividad. Para llevar a cabo esta investigación se ha utilizado técnicas de investigación cualitativas como la entrevista realizada al Presidente y Jefe Financiero y cuantitativas en base al presupuesto inicial, cedulas presupuestarias y planes de inversión. Como resultado de la evaluación a la Planificación Presupuestaria su nivel de cumplimiento en la realización de programas y proyectos fue moderado, debido a que el Gobierno Parroquial planificó en base a recursos que no fueron comprometidos en su totalidad. Como respuesta a las debilidades encontradas se propone métodos para mejorar los procesos de planificación, evaluación, determinar responsabilidades y mejorar la capacidad de respuesta del GAD Parroquial de Baños frente a las propuestas presentadas, priorizando las necesidades emergentes en los programas y proyectos de las actividades anuales a realizar, con el uso eficiente y eficaz de los recursos y así propiciar un ambiente adecuado para el desarrollo de la población y mejorar su calidad de vida a través de una óptima gestión públicaBased on current regulations proceeded to the "Assessment of the Budget Planning of the Autonomous Government Decentralized Parish Bed Bath in the period 2012 - 2013", whose main objective was to determine whether the goals and objectives were met according to projections by applying the indicators of efficiency, effectiveness and efficiency. To conduct this research has used qualitative research techniques such as interview with President and Chief Financial and Quantitative based on the initial budget, budget warrants and investment plans. As a result of the evaluation to the budgetary planning their level of compliance in the implementation of programs and projects was moderate, because Parish Government planned based on resources that were not fully committed. In response to the weaknesses identified methods are proposed to improve the planning, evaluation, identify responsibilities and improve the responsiveness of GAD Parish Bathrooms against the proposals, prioritizing emerging needs in programs and projects annual activities to do with the efficient and effective use of resources and thus provide an appropriate environment for the development of the population and improve their quality of life through optimum governance.Contador Público AuditorCuenc