Okay so, good morning everyone, thank
you so much for being here and for this
opportunity, my name is Lluis Casabona and
today I will talk about organic Field
Effect transistors for near infrared
light detection so first of all what is
Neo infrared like and why is it
important Neo infrared or n light is a
type of radiation that we can find next
to the visible spectrum devices made
with these materials usually exhibit
excellent
performances however for some specific
applications they might present some
limitations for instance in flexible
applications and for spectral selective
detection um to address these issues uh
we can build organic photo detectors
these devices are made with Organic
semiconductors which are highly
conjugated organic molecules or polymers
based on carbon and
hydrogen these materials offer some uh
advantages for instance they are
compatible with flexible substrates and
um of with large area
fabrication uh we can um we have
different types of photo detectors photo
conductors photo diodes and
phototransistors one type of electronic
device that we can use to build organic
phototransistors are the so-called
organic Field Effect transistors or oets
ofets are three terminal devices where
the current flow from two electrodes
that we call source and the drain s and
D can be modulated by the application of
a voltage in the third electrode called
the gate these devices can be easily
integrated in electronic circuits and
are relatively easy to
fabricate one of the main challenges of
n organic photod detectors is to find
photoactive materials that are able to
absorb near infrared photon
in this work we focused our efforts in
this molecule here that you can see here
which is Y6 Y6 is an end type
semiconductor that presents an absortion
spectr like this one with a peak in the
near infrared at 841 nanometers and
therefore shows potential as a possible
candidate for n photo detectors and this
leads us to the main objective of this
work we just to study the potential of
oets made with this material Y6 as
prospective candidates for organic
photod detectors and to optimize the
fabrication conditions of these
devices so the methodology that we
followed in this work is as follows
first we fabricated our
devices then we characterized the
organic uh semiconductor thin layer by
different techniques in particular we
focused on the crystallinity of this
layer
uh next we electrically characterized
this electrical devices the O fets by
different electrical measurements and
finally the best of fets were studied as
organic phototransistors under n
Illumination in the following slides we
will see each one of these steps in more
detail so how we fabricated our
devices first we started with a silicon
wafer as our starting substrate where
highly doed silicon acted both as the
gate electrode and the substrate and a
thin silicon dioxide layer as the
dialectric
material then we evaporated the source
and drain electrodes by means of
photolithography uh here you can see the
the shape of the electrodes that we used
which are inter digitated
electrodes after that we coated um the
organic semiconductor layer with a
technique that is called blade coating
for this we previously prepared a
solution of our Semiconductor in
chloroform and then uh we applied this
blade coating technique which consists
on preparing a meniscus in the gap
between a blade and the substrate and
moving the blade forward th creating
this homogeneous thin
film this technique is compatible with
roll to roll and large area
fabrication and finally um we did a
thermal analing of our devices which
consists on heating them at different
temperatures in our case between 110°
and
250° this step is extremely important as
it allows us to obtain crystallinity of
this particular organic semiconductor
which enhances or typically enhances the
performance device the device
performances all of these steps took
place inside of a glow box to avoid the
gradation of our
semiconductor here are the results of
the thin film characterization
um with the polarized Optical microscopy
images we could see that samples are
kned between 170 degrees and and
230° uh showed crystalline domains this
could also be observed um with the X-ray
defraction uh measurements as we observe
some Peaks for these temperatures
however for the highest temperatures we
also observed some partial de wetting uh
which is undesirable and therefore 170
and
190° were considered the optimal ones to
achieve crystallinity of our
semiconductor with these um devices and
also the ones at
150 we perform some electrical
measurements in particular the transfer
measurement which consists on measuring
the source and drain current as we sweep
the source gate potential and by fitting
this experimental data to
this uh theoretical equation here we can
extract the two figures of Merit of of
fets which are the Field Effect Mobility
which quantizes the ease with which
charge carriers move along a
semiconductor and the thresold voltage
which is the minimum voltage that we
need to apply to induce a pressable
current in our
device our results show that for
crystalline samples the ones at 170 and
190 the mobility values and therefore
the performance of our device were
significantly higher than for the amoros
sample which is what we
expected uh moreover in particular the
the highest value was around 0.1 for the
samples at
170 uh regarding the thresold voltage we
could see that uh we achieved values
positive values for the crystalline
samples which is what we expect for an
end type organic
semiconductor the best device es an at
170 were later characterized under
illumination as organic
phototransistors uh to do so we send
some light pulses to these devices and
here you can see an example of a dynamic
measurement where you can clearly see
how the current increases significantly
when there is light insiding on the
device um yeah El light from the
amplitude of these steps we can extract
the photor responsi photoresponsivity
which is a key parameter to quantify the
performance of a photo
transistor um by performing several
measurements like this one under SE
under different
conditions we could obtain these results
which show that for different
polarizations of our transistors the
same tendency between responsivity of
the device and incident Optical power or
intensity of the incident light uh is as
follows uh which follows this equation
that you can see on top of the
slide where this relationship is not
lineal but um uh we have this relation
where beta is always lower than one this
shows that at lower incident Optical
Powers we get higher response of our
device and this leads us to the main
conclusions of our work which is that we
could successfully fabricate y60 feds um
we also saw that uh a polymorph Y6 can
be achieved aning at 170 and 190 degrees
and that this Crystal in structures also
provided the best performance of our
device and finally we saw that um at
lower incident Optical Powers we
achieved higher response which uh aligns
with the objective to be able to detect
lower low quantities of incident
light all in all Y6 is a potential
candidate for our Ric photo transistors
and uh further optimizations both in
Silicon and in flexible substrates
should be carried out and in the future
hopefully apply these devices in real
applications such as poo
Symmetry and well thank you I would like
to thank simat for this opportunity and
to all my mmap fellows with whom I
enjoyed a lot carrying out this project
and that's all thank you so much for
your attention if you have any questions
please feel free to ask I will be
delighted to try to answer them
I have question to the first to the
slide six
yes
okay it seems that the better
personality is obtain
for7
um yeah for the it is true that for the
170° um only one Peak is observed and
with very low intensity the pigs could
be observed um but the scale was uh very
yeah the pigs were not as as significant
as the ones at
190 because it's almost yeah um actually
here maybe the image is not super clear
and compared with the
190 um it is true that here you can
clearly see the crystalling domains and
here it's almost in the middle between a
morphos and
crystalline actually
um so you could observe some crystalling
domains when we when we did the
electrical characterization of our
samples we expected the 190° samples to
perform to have a better better
performance than the on at
170 and what we think it happens is that
at
190 there might be some micr structural
defects that we cannot observe uh with
polarized microscopy
images and this
um decreases the performance of our
device and maybe we should use other
characterization techniques to further
uh Analyze This okay thanks you welcome
thank you
for see okay uh maybe English so uh thank
you for presentation very interesting so
I think the final um object is just
human sensor no so this is a polymeric
device and how it's have you consider
studing how it affect by humidity or it
is affected or something like that like
the performance or yes um I don't know
if it will show here um because I have I
have extra light but they are
hidden yeah um maybe I
can I can look it
up yeah so we did uh different stability
tests of our devices because the organic
semiconductors that we're using are
known for not being the most St stable
materials in air um the first stability
test that we did was a bias stress where
we measured um several times the
transfer measurements the that
measurements that I showed uh before and
this was done 20 times and we can see a
small shift here in the threshold
voltage which is the minimum potential
needed to switch on the
device um and this these results were
taken into account when when later doing
the measurements under
illumination and then I tried to test my
devices in air because everything that I
I did in this work was in a glow so in
in and
conditions so what I did was to take one
of my devices 5 minutes out of the
glowbox and then me um measure it again
in the same uh
equipment and you can see that the
performance clearly uh
diminishes so I yeah um in order to work
with these devices in open air we should
first
um um code um yeah code them with other
materials that are transparent in the
near infrared um for them to work yeah
thank you for the question
good morning to everyone
I'm going to start the presentation of my
master thesis called processing of M
tractus stainless Steels using fuse
filament fabrication
Advanced processing Technologies such as
P injection molding and additive
manufacturing are revolutionizing the
way we design and manufactur components
they are allowing us to combine
different materials into a single piece
taking advantage of the individual
characteristics to obtain uh improved
functionalities this opens up possib uh
possibilities for a precise distribution
of mechanical thermal electrical or
chemical properties that with lead to
the design of new
applications achieving a high mechanical
strength and tactility in the Steels is
a longstanding
challenge uh to get a a good balance
between these two properties the current
trend is to to apply thermomechanical
treatments to the Steels to in order to
get a uniform distribution of multiple
phes in the micr
structure uh however these multiac
Steels as you can see uh have a limit a
in the properties they can achieve so
then several studies are showing that by
alternating hard faces with soft faces
in a mesoscopic scaling patterns is
possible to achieve an exceptional
combination of properties that is not
possible by any other STS family these
are called the mesas Steels and examples
are the old damasus and the more recent
multier Stills unfortunately uh
conventional methods for producing
multier steel Composites such as R
bonded and Forge welding have some
difficulties in obtaining complex
geometries from uh raw material seats
and also it had been seen that uh severe
deformation operations favor the
appearance of voids in the
interfaces then additive manufacturing
using multiple materials is a known
technique but applying the multilayer
still comet uh to this process is a
newer and a greater area of
interest uh currently mes structures uh
have already been achieved by 3D
printing by the direct type Technologies
these are based on melting and this
makes difficult to have a good control
over the micr structure also it's
possible to lose some alloying elements
because of sulation and moreover cracks
can form due to residual stresses from
solidification
so in this study we propose an
Innovative approach by using fuse
filament
fabrication uh that is an indirect uh
technology the process begin with by
blending the metallic pwder with a
binder that is then pelletized anded
into a filament for printing after
printing the binder has to be removed
and we do this by a first solvent based
debinding process followed by a thermal
debinding and a cing stage
uh the this is an indirect uh technology
and that means that once you get the
geometry you have to perform and to
optimize more steps until you you get
the final
component uh this technology offers
several advantages such as the good
material combination flexibility and the
most important one a good micr structure
control however there are some uh
challenges to to
overcome in my in my work during the the
master tesis I have focused on three
main challenges the first one is related
to the design of the fix stocks and the
solution processes in order to obtain a
windable printable
filaments uh that is a very crucial
process because all the the rest of the
faces depends on the filament quality
the second one is uh is to overcome
overcome all the challenges using uh a
two extruder printing process uh which
involves the control of many parameters
and requires a vast experience finally
the highest complexity rely on the cing
process when a rink cage uh takes place
and compositional gradients are
formed uh first we in this in this
presentation I I will discuss combining
uh two different stainless Steels uh
tintic 316 L and A martic 174 pH
searching for Unique com for a unique
combination of mechanical and corrosion
properties the challenges begin with the
selection of raw materials both both
patters have to s a similar
compatibility with the binder so in this
case we have selected uh PS with similar
particle size particle size distribution
similar uh
morphology then uh the The Binding
temperatures uh have to be similar in
both materials so we have decided to use
the same binder systems and finally we
have maximized the solid loading uh to a
60% in both fix stocks in order to to
reduce the contraction during cering and
make the process more
controllable uh about printing with two
extruders many considerations have to be
taken in in account the first is the
filament retraction that is is necessary
while printing to avoid ooing but can be
problematic causing damages in the
filaments we have solved it by reducing
the filament retraction distance and by
developing uh filaments with enough
enough stiffness also a crucial factor
is the axis nuel cero calibration and
even a slight deviation can cause
catastrophic results during centering
finally uh printing is a process subject
to variations and this can lead to
microscopic defects as you can see we
have partially solve it by implementing
a printing parameter called overlap that
consist in setting a percentage of
overlap between
materials about Shing we have performed
a cing study between 3 1360 and 14400
Dees looking for the most suitable
temperatures in terms of those factors
for for both materials finally uh
temperatures between uh 1360 and sorry
1380 and 1390 degrees uh were considered
valid and as you can see we have uh
notice the contraction differences
between both materials while
cering however this didn't suppose a
problem while obtaining final measure
structures like the one in the
slide finally
uh uh cine is a diffusive uh process and
this results in compositional gradients
so to control this effect that is very
important to obtain tailor properties we
have performed chemical composition
analysis and micro harnesses profiles in
this diagram we we can see how the
interfaces and the martic bands increase
uh with the growing cing temperature
also it is remarkable the good uh
bonding mat materials that have been
achieved as conclusions uh uh the three
main challenges have been uh overcome
first we have uh a 316l and a 174 pH
windable and printable filaments valid
to material printing have been
developed uh the the challenges of
printing with chers have be overcome
obtaining free defects
uh geometries and finally
um final M structures have been achieved
with a a good bonding between materials
and a good M structor control so we have
demonstrated that the fabrication of M
structors with the fuse filament
fabrication technique is possible and
promising finally uh we have also found
some difficulties while obtaining other
geometries because of the stresses
during cering so we are uh planning to
work on on performing the latry test and
uh analyzing the most suitable
topologies to to improve to solve
these issues and to uh obtain the the
best mechanical and corrosion properties.
So this work has the ground SE
the ground for obtaining future
complex geometries with a
combination of other materials, obtain
unprecedented tailor properties on
groundbreaking application.
Thank you
Bueno, Juan, muy bien, muchísimas gracias.
Muy fenomenal la presentación que has hecho.
Vamos a empezar al contrario.
Si hay alguien de aquí, de los colegas, que quiera decir alguna cosa,
que quiera hacer alguna pregunta, que se sienta libre de hacerla. Y
bueno, y si no, pues vamos aquí a ver si
la paz, presidente de socio, tiene algo que preguntar.
Existe una?
Si puedes ir a la diapositiva tres en un instante.
Una vez.
Donde esta?
Parece haber un error.
Ya se ha entendido.
Perfecto.
Pues es la siguiente.
Donde tenías los resultados de micro dureza.
Ah, vale. Es que me he perdido por.
Por esto.
La pregunta es.
Por qué has usado micro dureza que tiene muy poca resolución espacial
y no nano indentación, que para este caso hubiera tenido mucha más resolución.
Y justo en la intercala, que es donde te interesa medir
o hubieras podido tener una información mucho más clara.
Y al final es que con toda la herramienta.
De la que disponíamos, posiblemente hemos hecho tomas imágenes que yo digo
en nuestro equipo de ventas y luego finalmente hicimos el análisis químico.
Tomamos un método algo más preciso en el zoom, quizás para ver precisamente.
Hacerte cerca del micrófono, porque si no, no se te oye.
En las.
Cosas que están fuera. No, de. Verdad,
no se oye que
hemos utilizado al final los métodos que tenemos un poco en la escuela
y en el grupo y, ya sabes, lo hemos hecho lo mejor que hemos hecho.
Una sugerencia del extranjero, porque posiblemente os de una información
más precisa y complementaria a la que ya
tenéis por imagen y por composición, que si
mucho.
A mi me pareció muy interesante el trabajo y has mencionado en varias ocasiones
el tema de la resistencia a la corrosión, porque claro, aquí tú
ves que tienes unos materiales que tienen tantas caras
y de distintas composiciones, que luego cuando eso
está operando en un sistema, habéis hecho alguna las medidas y no hemos.
Llegado al final el TCM ha dado para los malo para lo que se ha contado.
Evidentemente seguimos, tenemos que seguir más claro.
Pues a ver si para la tesis puede dar muy buenos resultados.
Enhorabuena, Juan.
Vale, muchas gracias.
Esfuerzos, full ingresos.
hello everyone first of all I would like
to thank the soci committee for
selecting me as a fin finalist I'm very
honored for that recognition as the
chairman said I'm meono and today I'm
talking about the master thesis I did
last year at the University autonom
Madrid under the supervision of Dr sharo
and Dr
miraya please don't be afraid of such a
lar title what I'm explaining you today
is how by a Noel stragedy we have
already modeled and we are currently
trying to reproduce experimentally we
can dramatic dramatically um increase
the performance of solar while reducing
their cost I would like to start with a
brief discussion of the energy situation
in our worldall we are all familiarized
with the need in our society to find a
clean and renovable renovable source of
energy here you have some a
representation of the total war reserves
of some non- renov renovable source of
energy that as you know they are not
only limit but also producing pollution
problems and climate
change nevertheless as per say
earlier in only one year the solar
energy that reach our planet is much
higher than all that reserves together
further more as you see here the cost of
this non-renewable source of energy have
been maintained over the years if not
increased and on contrary solar
photovolatic has gone from being the
most expensive to the cheapest one in
little more than a decade so what is our
excuse here I mean we have the most
powerful ER clean and cheap H source of
energy at our disposal what is it what
that we are not using it I personally
don't know the answer to that question
but as scientist the only thing we can
do for the moment is continue improving
even further this technology which is
the main objective of the master thesis
to do that we propose two different
Pathways first of all the use of more
accessible and cheaper materials and
secondly increase efficiency of the
devices regarding the first one we have
to acknowledge the importance that
silicon has in our society it has been
the material used per excellence in
almost every electronic technology as
you see here the efficiency of these H
silicon solar cells are ER for a long
time now are optimal are near to the
theoretical limit but the processing of
this material requires thousand of
degrees it is energetically expensive
moreover it is controlled by Asian
Powers so people rely on other countries
to obtain it in this context Alli
perides are very promising they have an
octal structure where the vertices are
Alli onion we have lead at the middle
and we have an organic molecule or
theion between octav the synthesis of
this material is much easier and only
requires
100° furthermore depending on their
composition we can obtain different oo
electronic properties as you see here
band gaps over a wide range can be
obtained so the Great properties of
these materials have lead to an increase
in the an increase in the evolution of
the deficiency of pery
solar incredible and a little more than
a decade they are also at the level
there are all there are and already at
the level of
silicon so okay now let's see the second
approach to see how uh to increase the
efficiency of the device I will start
with the basic with the fundamentals of
solar cell here you have a general
schematic of a solar cell where we have
a semiconductor as the absorbing layer
and then we have a few other layers that
ensure the operation of the cell let's
illuminate it from above look at that
Photon that is coming back coming down
to be absorbed at the semiconductor
suppose that that Photon has an energy
quite higher than that of the bangard an
electron from the conduction from the
balance band will be well the animations
are
okay an electron is going to be promoted
from the balance band to the condution
band with that excess of energy but due
to the low the low the less energetic
State inside the vs this charge will
thermalize eventually to the band EDS
losing that excess of energy at the
moment of the charge struction so as you
see these thermalization losses are
reducing dramatically the possible the
potential efficiency of a solar cell
leaving a the IAL limit at only
33% one could say that in order to
mitigate these thermalization losses we
should increase the band gap of the
semiconductor to extract the the charge
the charges at higher potential but if
we do that if we increase the the energy
of the bandup less photons from the
incoming solar Spectrum will be absorbed
so we will generate less current and
this is H where the standing config
configuration comes into play here we
have two sub cells one on top of the
other made of different materials that
will absorb different spectral regions
we first we first have a white B bang
semiconductor that will absorb the most
energetic photons leading to
thermalization to higher potentials and
then we will have the narrow bandas
semiconductor that will absorb the
remaining less energetic photons in this
H configuration we have to think into
account that the both two cells one on
top of the other are connected in
serious so the total voltage of the cell
will be the sum of both voltages while
the current will be limited
by that subcell that produce l
photocurrent so we will need to find
what is known as current matching
conditions it is that is to make both
sub cells to absorb the same amount of
like in order to maximize the total
current
cell if we fulfill that an a new
theoretical limit open open UPS to
44% so as I told you before one of the
most attractive properties of allight
perides is the the Bon ability depending
on their composition so we have all this
composition suitable for a White Band
Gap layer in a tund and luckily a few
years ago some members of my group and
others demonstrated that by a partial
substituting of lead by team narrow bang
AOS skite will also possible opening the
possibility of all peros Sky tund solar
cells okay H the problem this material
have the steam light lead perite is that
they do not absorb as efficiently as the
previous composition so it's going to be
the limiting factor in a tund device the
problem the the solution we propose to
WorkOne this problem is the use of
metallic nanop particles that support
localized surface plasmonic resonances
as the one you are seeing in the
simulation with these particles we can
surgically increase the electric field
at the exact position and at the exact
spectral region we want so by means of
introducing this nanop particles inside
the narrow banga perite we can increase
its absortion so basically we are like
doctors operating a solar cell to
increase its
absorption so we did the simulations
using the fdtd method at first not in a
tment but in a single Junction model as
the one you are seeing here and we
optimize several
parameters the particle material between
copper gold and silver the radius of the
Spheres and the volume concentration
that we introduce those SPS inside the
peros skite and we obtain these results
for the uh the current
calculated for different sizes and
concentration obtaining this optimal
case for this silver Nano particles
let's analyze it in more detail here you
have the absor and spectrum of that
optimal case represented in Orange in
compared to that of a reference cell
without using nanop particles and as you
can see there's a a considerable
Improvement specifically at long
wavelength now what you are seeing is
the differential absortion
per per unit of volume at different at
crossing your planes at different wave
of interest at your right we have the
reference cell where we can see this
fabrio type interference typically in a
Plano paral multier structure and at the
plasmonic cell we can see this multi
multi multipolar plasmonic resonance
coming from the nanop particle so from
these figures we can deduce that the
absortion enhancement comes from a fine
coupling between both effects which is
what we have been optimizing during the
the
simulation and finally we went for a
Tandon
device we did the same
optimizations in a model as the one you
are seeing but this time using as a
starting point the optimal nanop
particles previously calculated for the
single Junction solar cell and we
obtaining the result for the match
current finding this optimal case as I
told you before due to the series
connection of both two cells in a tandem
we we have had to calculate the current
matching conditions in every Point
here and as an example of that is what
you are seeing here as we increase the
front peros Sky thickness more photons
will be absorbed there so the current in
the front suell will be increased as you
see represented in green on contrary
less photons will reach the r Sur cell
so the current there will be decreased
and that's going to be a point at which
both currents will match with each other
maximizing the total current of the cell
and that
happens at 1536 for a red fa and Cel
represented in Orange and at 1637 for a
for the optimal plasmonic tanden cell
represented in blue and this current
enhancement corresponds to more than a
super and absolute efficiency
enhancement so I have I I hope that I
have convinced you that um using
designing solar cells using more
affordable material is the path for the
future and for that reason we have
modelized all per Sky T solar set using
nanop particles to overcome their
limitations we found a system that
promise an absolute 2% efficiency
enhancment and to finish just say that
the experimental demonstration of these
uh models is already in progress I'm in
contact with yunhan at the University of
of Cambridge who is already making this
device this old peros skan and solar
cell the s
of the of the nanop particles have
already begun and first attempt to
include this in the solar cells have
also been made and thank you all of you
for your your attention and thank to all
my group for their support thank you
very
much
Bueno, pues nada Jaime, que
la verdad es que es una faena, que los tres sois tan buenos.
Es muy bueno para la ciencia, pero muy malo
para esos demás que solo tiene un premio.
Aunque yo creo que habría que hablar con el presidente para que el año que viene
haya más premios, porque es que de verdad es una pasada.
Los tres que habéis presentado y no sé si alguien en la sala quiere.
Por favor, profesor.
Yo hice tu.
Sí, yo.
Yo tengo una pregunta de
ese hombre sobre el material.
A mi me encantan las rosquillas de plomo, pero como todo, como nos llevamos
con la normativa europea de no usar plomo, porque en otro tipo de.
Dispositivos en los que yo uso proscritas,
estamos obligados a suprimir el plomo en todas ellas.
Efectivamente, el plomo, la
toxicidad del programa es un claro problema actualmente.
Pero fíjate que esta aproximación que nosotros estamos tomando
va en la línea de reducir.
Aparte de que los grosores ya de por sí son bastante límite,
son muy finos estas capas, entonces el contenido de plomo
es bastante escaso y todo este dispositivo llevaría un encapsulado
para tratar de que no haya fugas.
Pero aparte de eso, toda esta aproximación se trata de aumentar
la absorción del material para reducir la incluso más, incluso las.
Pero ten en cuenta que las velocidades de las que estamos hablando
son estas que sustituimos el plomo por el estaño.
En el caso la tandem es verdad que la de arriba seguiría teniendo plomo, pero
y la línea del trabajo es intentar un poco reducir ese contenido en plomo
en sentidos, tanto en la composición de la pelotita
como en el grosor de la velocidad.
Pero sí es verdad que el plomo es
una de las cosas que más echan atrás actualmente a las florecitas.
Bueno, gracias
Paloma, que desahogo.
No, la verdad es que lo suscribo y muy bien para
la ciencia y futuro de la ciencia, pero muy mal
de nuestro tiempo por dentro, en un pais en un aprieto.
Pero bueno, muchas ni eso.
Solamente añadir que es la diversidad de campos
en los cuales se trabaja, lo cual es muy de agradecer.
Quiere decir que nuestra ciencia
es muy ancha y eso es muy bueno.
Muchas gracias.
Bueno, pues muchas gracias.
Ahora la profesora Paloma Fernández y el profesor José Ignacio Pastor
van a hacer entrega, que yo llamaría a los tres finalistas para que vengan
aquí.
Muchas gracias, Sandra.
Buenas.
Bueno, eso ocurrió.
No todos son prosélitos.
Si, bueno,
improviso.
Pues no se improvisa.
No? Para mí es una placer estar aquí.
Bueno, además, como todo en este año,
está siendo un poco la primera vez después de la pandemia.
Por fin.
Entonces, la verdad es que es un placer, porque me he vuelto a encontrar
con gente con la que quiero mucho.
Creo que con la lleva un montón de tiempo sin podernos encontrar a todos.
Es un placer. Es un placer además, ver como las cosas que
nació hace unos cuantos años,
pues con esfuerzo pero casi como venga José Ignacio,
tu pones unas fotos allí en la escuela y simultáneamente yo pongo otras fotos
aquí en el pasillo de mi facultad y hacemos un concurso en Twitter
y hacemos algo para dar, para celebrar, para apuntarnos.
Bien y tu y no.
Te vayas en 30.
Minutos, vamos ya muy viejos.
Pues es un placer ver como aquello que bueno es que fue literalmente
dos exposiciones simultáneas, una en la facultad de pases
de la Facultad de Física de la Complutense y otra en el pasillo de esta facultad,
y que de ahí ya hemos llevado hasta aquí.
Entonces eso me parece que es
bueno.
Una cosa por la que nos tenemos que felicitar todos y que desde luego,
pues me hace sentirme muy feliz.
Y la única faena pues que eso es demasiado bueno.
Y entonces pues como soy demasiado bueno nos lo ponen muy difícil
a la hora de decidir estas cosas,
porque habría que daros un premio a todos.
Saben que está muy bien, porque bueno, cuando algunos ya llevábamos
un poquito retirada, pues vemos que las nuevas generaciones
verdaderamente prometen
y eso está muy bien y en parte.
No nada más felicitaros a los tres.
Ahora, si el ganador tiene
la responsabilidad de ganar
el concurso europeo, o sea que
tiene una responsabilidad
enorme detrás de él porque va a representar a toda su madre
en una competición europea al Mundial realmente del más alto nivel.
Enhorabuena de nuevo a vosotros y a vuestros directores de los trabajos.
Esos serán el lunes normal que nos veremos de nuevo.
Bueno, pues empezamos por los finalistas.
Los finalistas son aves blancas y todo esto.
Juan Jiménez a Lumbreras
y Jaime Bueno, Benito
y bueno, ya tiene menos emoción.
Claro, el ganador en ese caso, bueno, tendrá
mi enhorabuena.