Prof. Risa was born in Bandung. He pursued his higher education at Institut Teknologi Bandung (ITB). He earned his Bachelor’s degree in Physics in 1997, followed by a Master’s degree in 2000. He then continued his doctoral studies in Quantum Engineering at Nagoya University, Japan, successfully obtaining his Ph.D. in 2007.

Extensive International Collaboration and Teaching Experience

Throughout his academic career, Prof. Risa has gained valuable international teaching experience. He has lectured at Cukyou Women’s University in Japan. He has also collaborated on research projects with renowned institutions, including Université du Littoral Côte d’Opale (ULCO) in France, Tokyo University, and Nagoya University in Japan. In Indonesia, he has worked with the National Research and Innovation Agency (BRIN).

Additionally, Prof. Risa has served as a visiting professor and researcher at ULCO in France. He has also contributed to Applied Physics at Nagoya University in Japan and The Polytechnic Institute of Bragança in Portugal. Since 2024, he has held the position of Head of the Sub-Laboratory Management Section. He serves in this role at the Integrated Laboratory Unit of UNS.

Scientific Oration on Surface Modification in Nanotechnology

During his inaugural speech at the G.P.H. Haryo Mataram Auditorium, Prof. Risa delivered a scientific oration. His presentation was titled “The Role of Surface Modification in Nanoscience and Nanotechnology.” He emphasized the importance of surface science research. This field examines physical and chemical phenomena at the interface of two phases, such as solid-liquid and solid-gas.

One notable application of this research is the development of hydrophobic coatings for car windshields. These coatings improve visibility in wet conditions by allowing water to flow off easily.

Contributions to Research and Material Technology

Prof. Risa’s research focuses on surface modification in nanoscience and nanotechnology. One of his key studies explores metal-oxide-semiconductor field-effect transistors (MOSFETs). His findings indicate that a 30 nm-thick layer of Palladium Silicide (Pd₂Si) can reduce parasitic resistance. This improvement enhances computer processor performance.

He has also investigated silicon carbide (SiC) substrates, which are highly suitable for growing gallium nitride (GaN). GaN is a primary material in blue light-emitting diode (LED) technology. Since SiC substrates are expensive, he developed a cost-effective method using molecular beam epitaxy (MBE). With this approach, he successfully created a 7,920-layer SiC film at 825°C.

In optoelectronics, Prof. Risa has advanced porous silicon (PSi) technology through electrochemical anodization and reactive ion etching (RIE). His research demonstrated that PSi with uniform pores enhances photoresponse stability in optoelectronic devices. Further studies explored its potential as a substrate for ZnO nanofibers and nanorods. These materials can be applied in solar cell technology.

In sensor technology, he developed a quartz crystal microbalance (QCM) modified with a polyvinyl acetate (PVAc) layer. His findings indicate that PVAc nanofibers exhibit higher sensitivity than thin films. This is especially evident in detecting ecstasy precursors, with a detection limit as low as 0.7 ppm.

A Role Model in Research and Innovation

With his extensive contributions to Electronic Material Physics, Prof. Risa inspires students and young researchers. His work continues to drive advancements in research and innovation in Indonesia. UNS takes great pride in having him as a dedicated academic contributing to the global development of science and technology.

Humas UNS

Reporter: R. P. Adji
Editor: Dwi Hastuti

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The competition was held by the Soil Research Institute (Balittanah) and the Center for Literacy and Agricultural Land and Resources Development (BBSDLP) Ministry of Agriculture (Kementan) of the Republic of Indonesia (RI) to celebrate World Soil Day. The Vlog Competition took a theme of “Climate Change to Soil Quality.”

To uns.ac.id, Farhan Erdaswin explained that the vlog was inspired by the climate change issues that affect soil quality in Tawangmangu, Karanganyar District. Climate change that increases the average earth temperature leads to increased precipitation, sea surface temperature, and climate-related incidents, and extreme weather. The team observed declining quality of the soil marked by the degraded soil in the region.

The increased precipitation in the region also leads to landslides and the increase in land-use changes from perennial to annual plants. “What we observed then recorded in the vlog as an information media on the impact of climate change on soil quality, especially in Tawangmangu,” Farhan Erdaswin stated on Wednesday (29/12/2021).

In the vlog, the team explained soil quality criteria, including its capacity in maintaining plant productivity, maintaining water availability, and supporting human activities. Good soil quality will support its function as the media for plant growth and manage and distribute water currents while supporting the environmental function.

Soil degradation due to climate change is triggered by numerous factors such as declining soil physical condition and soil biological process due to erosion, compression, fracture, nutrient washing, acidification, salinity, and decreasing organic matters and biodiversity of soil biomes. The vlog also shared the sites of landslides in Tawangmangu.

The team stated that they were delighted with the result and to bring pride to their program at the national level. They also hoped that their vlog could improve people’s awareness to take care of the soil quality.

“The message we want to share in the video is that Tawamangu soil quality has degraded due to the climate change, so that we need to protect the soil from further degradation,” Farhan Erdaswin stated. Humas UNS

Reporter: Rangga Pangestu Adji
Editor: Dwi Hastuti

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The first day of the program was attended by more than 100 participants consisting of lecturers and students of the Science Education Study Program FKIP UNS. The event started with remarks from the Head of the Science Education Study Program (Kaprodi) FKIP UNS, Dr. paed. Nurma Yunita Indriyanti, M.Sc., M.Sc. Following the welcome remark was the opening speech from the Vice-Dean for Academic, Research, and Student Affairs FKIP UNS, Prof. Dr. Slamet Subiyantoro, M.Sc., which at the same time opened the event symbolically.

Starting her presentation, Dr. Hobbs delivers material covering STEM in Australia, Why STEM? Framing STEM (What is It?), Approaches to STEM in Schools, STEM Teaching and Learning, Doing STEM, and What Have We Learned So Far about How to Implement STEM Well? Next, Dr. Hobbs also provides activities for students to apply STEM in groups, to design a nature-inspired technology.

On the second day, Dr. Hobbs continued her material on STEM implementation in Indonesia – how does it compare to Australia? Planning for STEM Learning and Assessment, Looking for Construction of New Practices and Beliefs, Key Pillars for Successful and Sustainable, STEM Programs in Schools, and Final Messages about Making STEM Education Work. After the material presentation, the event continued with a question and answer session. Some of the attending lecturers and students are interested in discussing with Dr. Hobbs about STEM and its application in schools. The event led by Bayu Antrakusuma, M.Pd., as moderator, went smoothly to the end of the event.

This Visiting Professor Program is expected to strengthen the Science Education Study Program FKIP UNS academic members’ knowledge of STEM. As a Lecturer of the Science Education Study Program, Bayu hopes that this activity can prepare FKIP students, as prospective teachers, to implement STEM in their schools.

“Hopefully, this activity will help FKIP students as prospective teachers to get ready to implement STEM in their future schools,” Bayu wishes. Humas UNS

Reporter: Zalfaa Azalia Pursita
Editor: Dwi Hastuti

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The team members consisted of faculty members and students of the Biology Education Program, Early Childhood Education Program (PG PAUD), and Fine Art Education Program. The involvement of diverse education backgrounds aims to provide an appropriate education for parents in teaching science to their children.

The webinar was implemented in four series; science education for early childhood, skills in science process and preparing simple science activities at home, arts and science, and sharing of science activities at-home experiences. This program was initiated due to the inappropriate perception of science for early childhood and aims to educate parents on how to deliver the concept of science and assist children in studying at home.

“Because the perception of science is a complicated knowledge and is not appropriate for early childhood,” Vera Sholeha, the first speaker in the webinar, explained the misperception of science for early childhood.

To counter the misperception, she provided examples of science that are close to children’s daily life, such as children playing with sands and filtering the grains of sand as an application of physics, seeing a rainbow, the sound of frog, making tea, and ball pitching play. “The concept of science could be understood by children when explained using simple language,” she added.

Kristiana Elok Mumpuni, S.Pd., M.Pd., shared material on preparing simple science activities at home. She stated that science comprehension could be achieved through observation and practice on science. Parents need to consider their children’s age, the theme of science program, learning method, tools and equipment, and parents’ ability.

“Science does not have to be learned in the laboratory with advanced tools, but could be learned at home with surrounding tools and materials,” she added.

The third speaker, Endri Sintiana Murni, S.Pd., M.Pd., shared the relationship between arts and science and how to use arts to introduce science to children. She explained that children could express themselves freely, connecting what is in their thoughts into artworks, and even science reports can be provided in the form of artworks and examples.

“For example, the sound created from taps on glass that could form musical arrangement. This is a combination of physics and arts,” she said.

The last series was concluded with sharing of experiences on science activities at home with children. Humas UNS

Reporter: Zalfaa Azalia Pursita
Editor: Dwi Hastuti

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The defense was held on Monday (22/11/2021), with Prof. Ravik Karsidi as promotor, Prof. Mahendra Wijaya as Co Promotor 1, and Prahastiwi Utari, Ph.D. as Co Promotor 2. The board of examiners was led by Prof. Ahmad Yunus, Prof. Ismi Dwi Astuti Nurhaeni as secretary, and Prof. Suwarto, Prof. Pawito, Dr. Andre Rahmanto, as members.

In her dissertation, Emi suggested to the agricultural extension officers to provide communication technology literacy to ensure that farmers have the millennials’ and progressive farmers’ communication identity. Communication technology literacy has an impact on the social changes recorded in human history.

“Social structure becomes a process that shapes stereotypes negotiated in determining competences through the competence formation,” Emi explained.

As reported in https://s3ilkom.fisip.uns.ac.id, Emi stated that negotiation of millennials and progressive farmers identity contains a perspective on technology, social, cultural, and environmental transfer. Emi also found that competence, courage to motivate other farmers, culture, and environmental supports in millennial farmers make them good agricultural extension officers for other farmers. The existing identity negotiation and communication caused by the current condition faced by farmers, in which their profession was threatened by newly developed professions in the urban regions.

Emi added that farmers need competence improvement in communication skills to explain that their profession is a professional occupation in the community structure. To support the communication skills of farmers, the role of agricultural extension officers is needed to deliver materials on communication and agricultural management. At the end of her defense, Emi added that mother and wife are the main driving force for millennials and progressive farmers in their negotiation of communication identity. Humas UNS

Reporter: Dwi Hastuti

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The general lecture was led by Meika Apriyani and Dr. Baskoro Adi Prayitno as moderators and was opened with an opening remark from Prof. Dr. Slamet Subiyantoro, M.Si., Vice-Dean for Academic, Research, and Student Affairs, followed by an opening remark from Dr. Bowo Sugiharto, M.Pd., as the Head of Master Program in Biology Education UNS.

In the general lecture, Prof. Haniza shared her experiences in teaching science using various methods that were rarely applied by other science lecturers. One of the methods applied by Prof. Haniza is a play assignment for her students that is integrated into anatomy and histology materials in the Biology course. Song and Lyrics is another method employed by Prof. Haniza, in which students were asked to create a song based on Biology course materials.

Collaboration between science and arts is proven to create exciting learning methods. The contradictory characteristics between arts and science create harmony in attracting students’ interest to participate in science-related courses and facilitate students’ comprehension. The combination was inspired by Prof. Haniza’s experience as a science student in which arts helped her to comprehend science materials that she thought were difficult. Such integration is also a solution for students’ boredom in learning, especially amid the Covid-19 pandemic that limits people’s mobility.

“With exciting learning situations, students will be happier to participate in the learning process,” Prof. Haniza stated.

Arts assignments are also still possible to complete for students even though they need to be extra creative in conducting distanced collaboration among them. Continuous assessment, through essay, mind mapping, bridge maps, self-learning module, virtual lab, and virtual field work could also be incorporated to reduce students who cheat in examination. Prof. Haniza also gives her students assignments with strict deadlines in the Myguru app as a form of the monitoring process. Prof. Haniza’s explanation could become examples and options to be implemented by other educational practitioners in creating exciting learning programs for their students. Humas UNS

Reporter: Rangga P.A.
Editor: Dwi Hastuti

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