Instituto de Microelectrónica de Barcelona (IMB-CNM)
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Nuevo dispositivo portátil para la detección automatizada de radón
OneWeb lanzará un nuevo lote de satélites con 136 fotodiodos de silicio
Summary of the round table "Del primer STM a Catalunya als microscopis actuals", which took place on 16th November in the framework of the Setmana de la Ciència, organized by IMB-CNM, ICMAB, ICN2 and the UAB School of Sciences.
"My research aims to develop and evaluate the performances of micro gas sensor devices with gas sensitive material"
Milena Tomić is defending her thesis "Semiconducting metal oxide structures with surface nanoscale interfaces for gas sensing" and she answered some questions about her line of research, the applications of the sensors and the time she spent at IMB-CNM.
Tissue barriers play a crucial role in human physiology by establishing tissue compartmentalization and regulating organ homeostasis. Combining hydrogels with microfluidics technology provides unique opportunities to better recreate in vitro the tissue barrier models including the cellular components and the functionality of the in vivo tissues. Such platforms have the potential of greatly improving the predictive capacities of the in vitro systems in applications such as drug development, or disease modeling. Nevertheless, their development is not without challenges in their microfabrication. In this review, we will discuss the recent advances driving the fabrication of hydrogel microfluidic platforms and their applications in multiple tissue barrier models.
The large electrocaloric coupling in PbZrO3 allows using high-speed infrared imaging for visualizing anti-ferroelectric switching dynamics via the associated temperature change. It is found that in ceramic samples of homogeneous temperature and thickness, switching is fast due to the generation of multiple nucleation sites, with devices responding in the millisecond range. By introducing gradients of thickness, however, it is possible to change the dynamics to propagation limited, whereby a single-phase boundary sweeps across the sample like a cold front, at a speed of ≈20 cm s−1. Additionally, introducing thermostatic temperature differences between two sides of the sample enables the simultaneous generation of a negative electrocaloric effect on one side and a positive one on the other, yielding a Janus-like electrocaloric response.
Advanced Electronic Materials, 2021, 2100380, DOI: 10.1002/aelm.202100380