X-Ray Microscopy of Spin Wave Focusing using a Fresnel Zone Plate

Magnonics, i.e. the artificial manipulation of spin waves, is a flourishing field of research with many potential uses in data processing within reach. Apart from the technological applications the possibility to directly influence and observe these types of waves is of great interest for fundamental research. Guidance and steering of spin waves has been previously shown and lateral spin wave confinement has been achieved. However, true spin wave focusing with both lateral confinement and increase in amplitude has not been shown before. Here, we show for the first time spin wave focusing by realizing a Fresnel zone plate type lens. Using x-ray microscopy we are able to directly image the propagation of spin waves into the nanometer sized focal spot. Furthermore, we observe that the focal spot can be freely moved in a large area by small variations of the bias field. Thus, this type of lens provides a steerable intense nanometer sized spin wave source. Potentially, this could be used to selectively illuminate magnonic devices like nano oscillators with a steerable spin wave beam

The condition of the public relations industry in Poland : current situation and threats related to COVID-19

Purpose: The most important research objective of the project described in this article is to examine the condition of the public relations (PR) industry in Poland in the context of changes taking place in the economy in connection with the COVID-19 pandemic. Design/Methodology/Approach: The research referred to a study conducted with the use of an auditorium survey in April 2019. The research sample consisted of 253 PR consultants, from various companies and organizations operating in Poland. The second project was a study aimed at understanding the impact of the coronavirus pandemic on the PR industry. 242 PR industry specialists were examined in this project. Findings: PR specialists in Poland are aware of the challenges and understand how to support companies and institutions affected by the crisis and operating in a changed reality. In our research, six areas have been defined, which may provide a new direction for the PR agency when preparing the service offer. Most of the respondents believe that a PR agency's potential clients will seek external help in communication services like media relations, digital PR, crisis management, lobbying, public affairs, event management, and influencer relations. Practical Implications: The article presents real and representative opinions of the public relations community expressing concerns and defining the directions of changes caused by the COVID pandemic. Originality/Value: The article presents the most recent and up-to-date research results on the condition of the PR industry in Poland, which is an important element of the European public relations market. The obtained research results are representative for Poland.peer-reviewe