Beatriz Rodríguez Mendoza

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Controlling the organization of proteins on surfaces provides a powerful biochemical tool for determining how cells interpret the spatial distribution of local signaling molecules. Here, we describe a general high fidelity approach based on electron beam writing to pattern the functional properties of protein-coated surfaces at length scales ranging from(More)
La Web Of Science (WOS) es una plataformade la empresa Thomson Reuters basada en tecnología web y formada por una amplia colección de bases de datos bibliográficas, citas y referencias de publicaciones científicas de cualquier disciplina del conocimiento –científico, tecnológico, humanístico y sociológico– desde 1945. Hasta enero de 2014 esta plataforma era(More)
We present a comparison between the modified Monte Carlo algorithm (MMCA) and a recently proposed ray-tracing algorithm named as photon-tracing algorithm. Both methods are compared exhaustively according to error analysis and computational costs. We show that the new photon-tracing method offers a solution with a slightly greater error but requiring from(More)
This peer-reviewed article can be downloaded, printed and distributed freely for any purposes (see copyright notice below). permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. Abstract A conventional angle diversity receiver uses multiple receiving elements that are oriented in different(More)
In this paper, an adaptive Orthogonal Frequency Division Multiplexing (OFDM) system is proposed for multiuser communications over indoor wireless optical channels. The designed system uses multiuser least-squares (LS) detection techniques applied to SDMA-OFDM schemes, in conjunction with angle diversity reception. The system, which does not present an(More)
In general, the use of angle-diversity receivers makes it possible to reduce the impact of ambient light noise, path loss and multipath distortion, in part by exploiting the fact that they often receive the desired signal from different directions. Angle-diversity detection can be performed using a composite receiver with multiple detector elements looking(More)
In this paper, a system based on time-hopping spread spectrum techniques for indoor visible light communications is studied via simulation. A 2-PPM modulation scheme is selected because it yields good results in wireless optical communications. Furthermore, the system allows for selecting the number of pulses per symbol to be transmitted and makes use of an(More)
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