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BEGIN:VEVENT
DTSTAMP:20260307T122346Z
UID:https://www.mpie.de/events/38467/3755656
DTSTART:20240607T090000Z
DTEND:20240607T100000Z
CLASS:PUBLIC
CREATED:20240625T153520Z
DESCRIPTION: In recent decades\, extensive efforts have been done to develo
 p new and more efficient alternative energy sources\, which can substitute
  conventional sources like gas\, petrol\, and carbon\, have been made. Due
  to the increase in energy consumed by society\, we not only need an alter
 native to conventional energy sources\, but also a reduction in energy con
 sumption. Therefore\, it is necessary to investigate different methods for
  energy-recovery and energy-saving as such as thermoelectric materials and
  radiative coolers. The thermoelectric materials can convert heat into ele
 ctricity and <i>vice versa</i>. The efficiency of these materials is relat
 ed to the figure of merit (<i>zT</i>) and it is defined as <i>zT</i>=(<i>
 σ</i>·<i>S</i><sup>2</sup>/<i>k</i>)·<i>T</i>\, where <i>σ</i> is the 
 electrical conductivity\, <i>S</i> is the Seebeck coefficient\, <i>k</i> i
 s the thermal conductivity\, and <i>T</i> is the absolute temperature. Now
 adays\, the application of inexpensive and scalable materials in the indus
 try for thermoelectric applications has received great interest. In this s
 ense electrodeposition is one of the most interesting techniques. It is pe
 rformed at room temperature\, so it is compatible with polymeric substrate
 s\, it does not require vacuum conditions\, and it allows perfect control 
 over the composition\, morphology\, and crystallographic structure. In thi
 s presentation\, I will provide an overview of different thermoelectric ma
 terials such as Bi<sub>2</sub>Te<sub>3</sub><sup>1</sup>\, CuNi<sup>2</sup
 >\, and Ag<sub>2</sub>Se<sup>3</sup> grown by electrodeposition and their 
 thermoelectric properties. In the case of silver selenide\, a thermoelectr
 ic power generator was produced and characterized. Radiative cooling is th
 e process by which temperature decreases due to an excess of emitted radia
 tion above absorber radiation. To achieve cooling\, it is necessary to red
 uce and keep the temperature below the ambient air temperature. The requir
 ements of radiative coolers to have maximum cooling power\, to be able to 
 reduce the temperature sufficiently\, and to function 24 hours a day anywh
 ere\, are high solar reflectance and high infrared emittance\, close to th
 e atmosphere’s window (between 8 and 13μm wavelengths). Different appro
 aches have been explored and porous nanostructures have shown the best res
 ults to this respect. In this sense\, porous anodic aluminium oxide (AAO) 
 nanostructures on Al was demonstrated to be a great candidate<sup>4</sup>.
  AAO is an amorphous material with an isotropic permittivity\, a strong ac
 oustic resonance absorption at the far IR (15 – 25 µm)\, and high trans
 parency in the UV‑Vis‑NIR range. In this presentation\, I will highlig
 ht the possibilities to use AAO nanostructure as radiative cooling. In add
 ition\, strcutural cellulose will be also analysed for the same purpose.\n
 Speaker: Dr. Cristina Vicente Manzano
LAST-MODIFIED:20240625T154123Z
LOCATION:Max-Planck-Institut für Eisenforschung GmbH\, Room: Large Confere
 nce Room No. 203
ORGANIZER;CN=on invitation of Dr. James Best and Prof. Gerhard Dehm:mailto:
SUMMARY: Materials grown by electrochemical techniques: The route towards s
 ustainable materials for energy 
URL;VALUE=URI:https://www.mpie.de/events/38467/3755656
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