By summerstudent Lorenzo Ubilla> Bessy II is a giant ring where dancing electrons create x ray light used by over 40 beam lines. As Newton once said, it stands on giant’s shoulders (quite literally since its located between Albert Einstein Str. And Max Planck Str.) and hundreds of scientists go there everyday to accomplish their goals or pale in frustration.Read More →
By summerstudent Gia Van Tran > Hop on the RE train at 7h12. I take out my pen and notebook to write down what I did yesterday and stupid mistakes to avoid. Then, I note down my daily tasks and some papers that would be nice to read when I was not in experiment time. That should take me at most 5 minutes to finish, so I still have around 50 minutes of commuting time.Read More →
The BESSY@HZB User Meeting welcomes 17 scientists from Kenya. They come from six different universities. One of them is Robert Ngure; he is a Master’s student in material science at Egerton university. He tells us more about his fascination for science and what he expects from his visit to Adlershof. Robert Ngure graduated in June 2019 and enrolled a few months later for a Master’s degree in science. In most universities in Kenya, you study for one year before you choose a specialisation. Robert’s decision was relatively straightforward: “I am convinced that material science is very relevant for my country. From the beginning, my goalRead More →
Dr. Tabitha A. Amollo is a researcher and lecturer at Egerton University in Njoro in Kenya. She holds a Ph.D. in physics from the University of KwaZulu-Natal, South Africa. Her research interests focus on developing cutting-edge nanomaterials for energy conversion devices including graphene nanomaterials. She published a number of articles in reputable journals. At Egerton University, she is the head of a young team to explore dye-sensitive solar cells, she is a chairperson of the Physics Department, and she coordinates the undergraduate program and gives lectures to undergraduates and postgraduate physics students. Here in Germany, there are not many women in physics. How is itRead More →
The 2023 User Meeting BESSY@HZB end of June welcomes Kenya as country of honour. Dr Lucy Ombaka from Technical University of Kenya in Nairobi tells us how she got to know about BESSY II light source and how she motivates women in science. Early May 2023 when we talk, Lucy Ombaka is just back from Berlin, where she spent a few days with the Humboldt Foundation. In 2018 she was awarded a postdoctoral fellowship there. Lecturer in Inorganic Chemistry at the Technical University of Kenya (TUK), Lucy holds a PhD in nanotechnology and catalysis. “I met Antje Vollmer1 from BESSY II during an online Humboldt-Symposium.Read More →
The BESSY@HZB user meeting will take place at the end of June 2023. For the first time, there will be a country of honour, Kenya. Antje Vollmer, BESSY II spokesperson, tells us how this came about and why it is important to work at eye level with researchers from other countries. Science diplomacy has long been a central theme for Antje Vollmer. She recalls that a lecture by Rolf-Dieter Heuer1 had a particular impact on her: “He spoke about the importance of CERN beyond science, and the role of large-scale research institutions for international cooperation and science diplomacy.” At BESSY II, international collaborations in thisRead More →
by DAAD-summerstudent Laura Berneaga What happens when you stop planning and start letting life flow by itself instead? Many would assume everything would crumble or you would somehow fall behind, but for me the complete opposite was true. This path led me to Germany, something I had been dreaming of doing since the last time I stepped foot in this country. Five years ago, I did a research exchange in Stuttgart and ever since then, all my plans revolved around finding a way to come back here. I enrolled in German language courses, I looked for internship opportunities in the area, I was inquiring aboutRead More →
by summerstudent Geunwoo Kim Before coming to Berlin, I had never spoken English. In South-Korea, it is not easy to have a chance to speak English in general except for special cases. I was also a student who had never had a chance to speak English. When I applied for the HZB Summer Student Program in February 2022, I was worried about ‘Can I communicate well?’ and ‘Can I do my research well?’ When I received an email from HZB that I was selected for the summer student program, I was happy and worried. The problem was that I had never spoken English. After finishingRead More →
Jongwoo and his team from Seoul are “friendly users”. This name is given to scientists who do their experiments on a pristine machine, before it goes into user operation. Back in Korea we called them to hear more about their special beamtime and what it means for their battery research.Read More →
If you try to search for “PSO” abbreviation in wiki you may find Pacific Symphony Orchestra or Phase-shift oscillator. However, my project at HZB is about neither music nor electricity, but mathematics. For almost a month here I have been working on an algorithm called Particle Swarm Optimization method and I would like you to have some impression of it. Optimization Actually, the definition of optimization problem is quite simple. One has a function of n-variables f(x1, …, xn) and seeks to find such values of variables that give minimum to the function. However, the solution is not that simple, because in general you cannotRead More →