Institute of High Pressure Physics

Dear Ladies and Gentlemen,

We are pleased to invite you to the IHPP PAS Seminar on Nitride Semiconductors. The next presentation will be held in a hybrid mode – at the New Technologies seminar room, Al. Prymasa Tysiąclecia 98, and through Zoom platform (to get the link, please contact us at nitride_seminar@mail.unipress.waw.pl ).

The next seminar is scheduled on Monday 25.09.2023 at 14:00.

Speaker: Ashfaq Ahmad (IHPP PAS, Laboratory of Nitride Semiconductor Physics)

Title: Phenomena related to charge distribution in nitride hetrostructures and their quantitative determination using density functional theory

Sincerely,

Tadeusz Suski
Piotr Perlin
Anna Kafar

Nowadays, Global Warming & Energy Crisis is experienced in every country/state. It is a planetary-scale civilization threat, and breakthrough innovative concepts seem to be essential for their overcoming. New generations of energy storage facilities seem to be particularly important. The lecture presents the works of  X-PressMatter laboratory (NL10)  on 'glassy' batteries for electric energy storage and 'thermal batteries' for 'cold' and 'heat' storage. Both concepts are inherently associated with high pressures, from ~ 50 MPa (500 atm) to ~ 2 GPa. ‘Glassy’ batteries research is related to electrodes composed of nanocrystallites in the amorphous (glass), formed under high pressure and high temperatures. It is the ‘hope’ for extreme durability and avoiding  ‘critical resources’, such as Lithium.  The  barocaloric effect-based ‘thermal batteries’ are related to exploring the latent heat (DH) and entropy (DS) associated with melting/freezing phase transition on compressing and decompressing. The obtained  DS are 2-3x higher than the current 'record' – for processing neutral for the natural environment.  It can allow the design of qualitatively new heating, cooling, and air conditioning systems. It is worth noting that 1 kg of R134a- type fluids, commonly used in air conditioning, has the same harmful effect on the atmosphere as a TIR truck after 6 months drive..

Prof. Sylwester J. Rzoska from our Institute, Laboratory of Ceramics and Glass, X-PressMatter will give a talk on „The Great Energy Crisis & Global Warming - some innovative solutions based on high-pressure-related R&D” in the coming Thursday UNIPRESS seminar.

The seminar will be held on-line on Thursday, September 21, 2023 at 15:00. To get the link to join the seminar, please contact us at dyrekcja@unipress.waw.pl

There is currently no viable solution for a robust bioresorbable orthopedic implant that can effectively address critical bone loss and bear mechanical loads. Therefore the development of new materials and technologies for biomedical applications is of vital importance.

This issue will be discussed in the coming Thursday UNIPRESS seminar. Elżbieta Pietrzykowska from our Institute, Laboratory of Nanomaterials will give a talk on „Preparation of bioresorbable nanohydroxyapatite composites for orthopedic applications”.

The seminar will be held on-line on Thursday, August 24, 2023 at 15:00. To get the link to join the seminar, please contact us at dyrekcja@unipress.waw.pl