BSc Bettiina Muurinen has started her MSc studies at IMC. She did her BSc lab work on nanocrystalline sulphide phosphors and now continues to work on the synthesis and research of color-changing hackmanites as part of project 1 work.
Laboratory exercises for the Materials Chemistry and Sustainability course are currently going. In the first work, metals were separated by dissolving metal-containing samples in nitric acid and precipitating the metals in different groups, taking advantage of the different solubilities of the salts they form. In the second project, the students prepare hackmanites, which are known as sensor materials, and study their properties.
Introducing two laboratory technician students from Turku Vocational Institute. Jemina Elo (left) is in Mika Lastusaari’s group doing work related to hackmanites, and Silja Lohvansuu is focusing on synthesizing organometallic compounds under Ari Lehtonen’s supervision.
Our article “Reusable radiochromic hackmanite with gamma exposure memory” published in the Materials Horizons journal got a place in the journal’s back cover. Based on Mika’s idea, Sami took a picture of a pile of hackmanite on top of a glass plate, which he partially colored with UV light to achieve a difference between the non-colored and colored. Big thanks also go to Kari Loikas, whose sturdy construction light he borrowed helped create a dramatic contrast in the picture.
The back cover is downloadable here: https://pubs.rsc.org/en/content/articlelanding/2022/mh/d2mh90072f
Mika, Sami, Hannah and Isabella are in the latest issue of Aurora magazine, where they were interviewed about their research. The article deals with the history of hackmanite research, which became a scientific phenomenon in the IMC group. Read the article in the physical magazine that is distributed on campus or electronically at https://www.utu.fi/fi/ajankohtaista/aurora/ihmeen-tekijat
Prof. Mika was interviewed by Laura Niemi and Outi Nurmela for University of Turku’s Vau, mikä vaikutus! (Wow, what an impact!) podcast. It will be aired some time next spring.
Introducing our MSc student Sinna Lampinen who is currently working with the synthesis of sodalites. The laboratory’s X-Ray diffractometer has been in heavy use during the fall. At home keeping her busy is a small sheep farm focusing on traditional landscape management in cooperation with the local nature conservation assosiation. Some hobbies include birdwatching, music, gym and yoga – whenever she finds time for them!
In last month’s Tiede (Finnish for science) magazine, Professor Mika Lastusaari was interviewed about hackmanites. In the newest issue (11/2022) Mika answers the question “where does the color of an element originate?“
Meet Ella-Roosa Suni, familiarly Ellis. She’s a third-year student currently doing her BSc lab work where she synthesizes luminescent nanoparticles. Ellis’ hobbies include riding horses, outdoor activities, baking, and having boardgame evenings with her friends.
Our newest hackmanite article is out! Sami’s second article concerning gamma radiation effects on hackmanite was published in Materials Horizons (impact factor 15.717) last week, Professor Mika Lastusaari being the corresponding author.
The article shows that gamma radiation induces hackmanite’s typical pink coloration and thus the material can be used to quantify radiation doses, but also that the high-energy radiation deforms the color center so that the reflectance spectrum shows additional signals, meaning that hackmanite can be used to identify the radiation quality. And last but not least: hackmanite also remembers exposure to gamma radiation even if it has been totally bleached to its original white color. This was a very nice and unexpected finding.
The article was an international cooperation of several institutions: University of Turku, University of Lyon (France), Tampere University, Swedish Defence Research Agency FOI, University of Jyväskylä, Turku PET Centre, and Mineralogical Society of Antwerp (Belgium).
The article can be found here: