Science and Innovation Week 2020

The Institute of Optoelectronic Systems and Microtechnology (ISOM) offers in the XX Science Week the online workshop “Graphene and its role in the energy challenges of the future”,  in which different graphene forms will be shown as future components in solar cells and micro-capacitors for improve energy production and storage in an economical and sustainable way.

The activity will take place through Zoom on the following days:

Wednesday 4 and 11 and Thursday 5 and 12 of November. There will be two hourly shifts each day: from 10:00 to 11:00 (the first shift) and from 11:00 to 12:00 (the second shift)

It is necessary to make a prior reservation. More information at UPM link or Madri + d link

Yu Kyoung Ryu                                     Andrés Velasco 
661241192 y.ryu@upm.es                    636651342 andres.velasco@upm.es

Defense of the Doctoral Thesis of Rajveer Singh Fandan (VIDEOCONFERENCE).

Title: “Quasiparticles in graphene and other 2D materials: modulation by a surface acoustic wave and contribution to Coulomb drag”. Thesis Director: Dr. Jorge Pedrós Ayala. Place: VIRTUAL CLASSROOMDate: October 29, 2020. Time: 10.00h Added public link to assist defense: https://upm.zoom.us/j/86274829587?pwd=Q0taV3czM01MSjFvZC9iOHBkNWxMUT09#success

Carlos Angulo, member of the ISOM-UPM and inventor of an optical sensor that can reliably discriminate ethanol from methanol by simple optical means.

A beam of light passes through a piece of heat exposed to vapors from an alcohol sample. The intensity of the light that passes through the heat allows to monitor the effect of the vapors on it.

18.05.2020

Researchers from the Institute of Optoelectronic Systems and Microtechnology (ISOM) of the Polytechnic University of Madrid (UPM) have developed an optical sensor that can reliably discriminate ethanol from methanol by simple optical means. In addition, the sensor provides a response in less than five minutes and its manufacture is based on materials and components that can be purchased without difficulty at a low price. The sensitive element of the sensor is a simple piece of heat, which, once used, can be easily replaced by a new one thanks to its adhesive properties and easy handling, with minimal cost. This is an advantage over other more sophisticated, expensive and bulky instrumentation in applications that require field sample analysis.

The vapor detector consists of a piece of transparent heat, the adhesive side of which is exposed to the vapors of the alcohol sample to be analyzed. The material the heat is made of responds to contact with the vapors by swelling, but it does so differently depending on whether the steam is methanol or ethanol. The swelling of the heat is detected by going through it with a light beam, such as that generated by a laser pointer, and measuring the power of the transmitted light with a photodetector that converts the optical power into an electrical signal. The physical change experienced by heat as a result of its exposure to vapors affects the light that passes through it. In this way, the electrical signal from the photodetector provides information on the nature of the alcoholic vapor analyzed.

The optical sensor could be used to detect alcoholic beverages adulterated with methanol. “Methanol and ethanol are volatile, colorless and chemically very similar liquids, but the former is more toxic. It is also cheaper, which leads unscrupulous people to counterfeit alcoholic beverages by substituting ethanol for methanol for profit, despite the serious health consequences that this entails ”says Carlos Angulo, member of the ISOM-UPM e inventor of the device. Discrimination against methanol and ethanol is therefore relevant from both an economic and a public health point of view, and the sensor developed by UPM researchers could help this.

Angulo Barrios, C. Scotch Tape Optical Vapor Sensor for Ethanol – Methanol Mixtures. Sensors 2019, 19 (24), 5381; https://doi.org/10.3390/s19245381

Defense of the Doctoral Thesis of Miguel Sinusía Lozano (VIDEOCONFERENCE).

Title: “Surface acoustic wave (SAW) devices on ScAlN thin films”. Thesis Director: Dr. Gonzalo Fuentes Iriarte, Doctorate Program: Doctorate in Engineering of Structures, Foundations and Materials. Place: VIRTUAL CLASSROOM. Date: May 29, 2020. Time: From 4:00 p.m. to 6:00 p.m. Added public link to assist defense: https://www.caminos.upm.es/principal.php?congido=/Investigadores/noticias.php&mp=5&ml=0 https://www.caminos.upm.es/principal.php?congido=/Estudiantes/noticias.php&mp=2&ml=0 https://upm.zoom.us/j/99487652267?status=success

Defense of the Doctoral Thesis of David Castilla Aragón (VIDEOCONFERENCE).

Title: “Effects of Surface Acoustic Waves in Ferromagnetic Nanostripes”.
Directors: Dr. José Luis Prieto Martín and Dr. Manuel Muñoz Sánchez, within the Doctorate program in Information and Communication Technologies: Materials and Devices (R.D. 99/2011) of the Polytechnic University of Madrid.
Defense date and time: May 22 at 10.00 AM.

Added public link to assist defense:

https://upm.zoom.us/meeting/register/tJMtduCqrTwiHdQGnms5V3MeRvLw5dmDTGc