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Science in times of transition - FNP publication

Monday, 24 April 2023 15:28 |

Refractive index engineering in GaN-based laser structures is quite a challenge because InN and AlN lattice constants significantly differ from GaN. This lattice mismatch is the reason why the chemical composition of epitaxial layers grown on GaN must be selected in such a way as not to generate mismatch defects.

InAlN with an indium composition of 17% is a good candidate for laser diode cladding layers, as it has a lower refractive index than GaN and is lattice-matched to the substrate. However, its fabrication is very difficult due to completely different optimal temperatures and pressures needed for the synthesis of its binary constituents InN and AlN.

In the publication “Science in times of transition” ("Nauka w czasach przemian”) prepared by the Foundation for Polish Science (FNP), dr inż. Marta Sawicka from our Institute tells about a project on improving the quality of InAlN grown by molecular beam epitaxy (MBE) supported by FNP. She also mentions a completely new idea - nanoporous GaN, which she and her research team implemented as a cladding layer in nitride lasers.

The publication is now available on the FNP website. It presents the achievements of more than 30 outstanding scientists whose research was supported by the FNP. Clicking the image below you will direclty open the publication. More about the project and the research team can be found on MBE Laboratory webpage.

Position of the Scientific Council of IHPP PAS on Russia's attack on Ukraine

Wednesday, 19 April 2023 11:47 |

Please follow this link to read the full text

Easter Wishes

Sunday, 02 April 2023 22:29 |

Strength of the terahertz radiation – podcast with prof. Wojciech Knap

Thursday, 30 March 2023 11:41 |

What kind of "sandwiches" does terahertz radiation like? What are its advantages over X-rays? What problems can be solved with terahertz technologies? Prof. Wojciech Knap, an outstanding Polish scientist from the Institute of High Pressure Physics #unipress, leading CENTERA (NL-11) laboratories, talks about the research carried out by his team within the International Research Agenda Program of the Foundation for Polish Science (FNP).

The link to the Polityka "Science for innovation" podcast about the „Strength of the terahertz radiation” is here (conversation is in Polish).

Prof. Wojciech Knap (Fot credit: FNP)

Polski Produkt Przyszłości z Unipressu

Friday, 21 April 2023 12:06 |

Wczoraj odbyła się uroczysta gala XXV edycja konkursu Polski Produkt Przyszłości organizowanego przez PARP. Miło nam poinformować, że nagrodę główną w kategorii Polski Produkt Przyszłości Instytucji Szkolnictwa Wyższego i Nauki zdobył nasz Instytut (Laboratorium Nadprzewodników NL-6) za projekt Bezpieczny hybrydowy (dwupłaszczowy) zasobnik wodoru o wysokiej gęstości zmagazynowanej energii z ciągłym monitorowaniem szczelności. Szczegóły wkrótce.

PhD students from Unipress will set off for the ZŁOMBOL charity rally

Tuesday, 11 April 2023 08:20 |

Two PhD students from our Institute - Oliwia and Krzysztof Gołyga (from MBE Laboratory) will set off for the ZŁOMBOL charity rally on July 1, 2023.

Złombol is a charity rally organized since 2007 to support the orphaned children. Collected donations are used to finance courses, upgrading job qualifications, organize trips and provide psychological help for the orphaned children and teenagers. All the informaton how to support our PhD students team Maruda Spółka ZOO after clicking the link below the logo.

More about the 17th edition of Złombol rally can be found here.

We will talk about InGaN relaxation in Cambridge

Friday, 31 March 2023 15:03 |

Transmission electron microscopy gives us a particular insight into material structure and defects.

At the upcoming Microscopy of Semi-Conducting Materials Conference on April 3-6, 2023 in Cambridge, dr hab. inż. Julita Smalc-Koziorowska will give an invited talk about "Peculiarities of the strain relaxation in InGaN layers". Dr inż. Joanna Moneta will give an oral presentation "Strain anisotropy of partially relaxed InGaN layers induced by misfit dislocations".

Detailed program of the conference is here.

Misfit dislocation (courtesy of J. Moneta)

Theory and Machine Learning for Crystal Growth

Wednesday, 29 March 2023 09:59 |

New lecture on crystal growth theory and application of machine learning for advanced modeling of crystal growth processes of semiconductor bulk crystals and epitaxial layers will be given within the scope of the physics courses in spring semester of Warsaw4PhD School.

The 8-lecture course will be given on-line by dr Akira KUSABA from Kyushu University. The first lecture will be given on April 18th 2023 at 10.00 am.

Visit the Warsaw4PhD webpage to find out more about the scope of the new course and get the Zoom meeting link.

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