ICYS事務局

国立研究開発法人 物質・材料研究機構
若手国際研究センター

〒305-0047 茨城県つくば市千現1-2-1

ICYSでの
研究ライフ

Nattapol Ma

(2024.04~)

ICYS: A Catalyst for Young Researchers.

I decided to join ICYS mainly because of the unique program structure. The program provides me the opportunity to independently initiate and oversee my research based on my personal interests, all while benefiting from invaluable support through mentoring systems. Advancing research for early-career researchers can often be challenging, particularly regarding access to advanced characterization equipment and research budgets. But as an ICYS researcher, I can take full advantage of the research facilities at NIMS and the annual research budget. This allows me to enjoy and focus on progressing with my research without concern.

My research is driven by the desire to accomplish generalized methodologies for crafting amorphous materials with customizable properties. I focus on the synthesis of new metal-organic glass constructed of metal ions and organic molecules and explore strategies to control their properties, especially proton conductivity. The aim is to achieve desirable properties by integrating the advantages of the systematic design concept found in coordination polymer/metal-organic frameworks with the wide composition range of glass. For example, relatively high proton conductivity and controllable thermal properties in metal-organic glasses are achievable by carefully selecting their components. A wide composition range allows for hybridizing the glasses with functional materials. This enables the formation of a binary glass system in which the properties of both individual components are complementary. Additionally, introducing stimuli-responsive molecules into the metal-organic glass matrix also enables remote property controls, such as an optical-switchable system.

Working in research means you must encounter numerous unsuccessful experiments before achieving successful results. Experiments that go as planned can already bring a great deal of satisfaction. However, the most enchanting moments in research come from discovering unexpected behaviors for the first time. I once worked with a mixture of a glass-forming coordination polymer and a superprotonic solid acid to create a hybrid material with high proton conductivity. The system was intended to be a physical mixture of two proton-conductive compounds. However, the solid mixture became liquid upon heating well below the melting points of both components. By carefully tracking the composition-dependent melting behavior of the system, this discovery turned out to be the first-ever eutectic behavior in coordination polymers or metal-organic frameworks.

As my research focuses on materials with an amorphous nature, combinations of characterization techniques are necessary to identify estimated structures and properties. Examples are X-ray diffraction, small-angle X-ray scattering, solid-state NMRs, positron annihilation lifetime spectroscopy, dynamic light scattering, X-ray photoelectron spectroscopy, IR spectroscopy, electron microscopy, and differential scanning calorimeters, all of which are available at NIMS.

At ICYS, you are surrounded by talented ICYS researchers from diverse backgrounds. This opens up a new opportunity to exchange ideas and initiate collaborations at the interface between two or more research fields. We not only engage in idea exchanges within ICYS, but we also have the privilege of discussing and collaborating with established scientists as part of NIMS. Together, this makes ICYS an ideal place to discover new sciences. If any of this sounds tempting, why not give it a try? See you at ICYS!

Lingying Li

(2023.04~)

My scientific career filled with joy and excitement

I have been fortunate to experience a research environment at ICYS that fosters creativity, collaboration, and intellectual curiosity. It is my great honor to provide insights into the research life at ICYS and share my own experiences.

Firstly, the decision to pursue research at ICYS was an easy one for me. When I was a graduate student, I was highly impressed by the exceptional achievements of ICYS Research Fellows. Their advanced studies, groundbreaking papers, exciting presentation, and outstanding awards left a deep impression on me. I aspired to be part of this extraordinary community and saw ICYS as a gathering place for young talented scientists. Furthermore, the favorable conditions offered by ICYS, such as research freedom, superior funding, an enthusiastic research atmosphere, mentoring from top-class researchers, and reliable administrative support, further solidified my resolve to start my scientific career at ICYS.

My research focus at ICYS revolves around the development of soft electronics through directed self-assembly technology. This field offers exciting possibilities for constructing sustainable manufacturing platforms and industrializing soft devices. Although the results are not always ideal, my research life is filled with the joy and excitement. Discovering new patterning phenomena with unforeseen mechanisms is a source of immense joy. Transforming unique phenomena into controllable patterning technology that align dispersed materials into regular structures brings a sense of triumph. Applying patterned structures to practical applications in fields such as electronics and healthcare brings a deep sense of joy and purpose to my work. Though summarizing the results into captivating publications poses a challenge, it further deepens the feeling of accomplishment.

In addition to my own research, what makes ICYS truly enjoyable is the privilege of working alongside leading researchers and experts from diverse scientific disciplines. The center promotes a culture of interdisciplinarity, independence, and innovation, providing abundant opportunities (e.g., bi-weekly ICYS seminar, ICYS workshop, etc.) to expand research horizons and foster interactive collaboration. Moreover, ICYS offers comprehensive access to state-of-the-art facilities, cutting-edge equipment, and valuable resources, enabling researchers to conduct high-quality studies and push the boundaries of knowledge in their respective fields.

Finally, I want to wholeheartedly say to those who are interested in research at ICYS that if you possess a passion for scientific exploration, confidence in the potential of your research, and a desire to make a meaningful impact, ICYS is the place to be and please embrace this unique opportunity. Join us in this “melting pot” and embark on an enriching research journey surrounded by inspiring fellows and experiences. Together, let us ignite innovation, challenge impossibility, and making a lasting impact on the world.

佐々木 悠太

(2021.09~2023.10)

ICYSでの刺激的で楽しい研究生活

NIMSには磁性・スピントロニクス材料研究拠点のポスドクとして最初に来ました。ポスドクをしているうちに、ICYSリサーチフェローとして研究されている方が何名かいることを知りました。NIMS研究者の雇用形態にパーマネント・ポスドク研究員とは別にICYSリサーチフェローという選択肢があることを知り、ICYSで研究をしようと考えました。特に、自分のやりたいことを自由に、しかもNIMSの研究設備を利用して研究できるという点が魅力的でした。

自分は、金属磁性薄膜材料におけるサブピコ秒からナノ秒程度の時間スケールにおける超高速なスピンダイナミクスに関する研究をしています。磁性を担う原子の磁気モーメントや電子のスピンというものは、材料特性や印加磁場を制御することでピコ秒スケールのダイナミクスを励起することが可能となります。そのため、磁性材料をうまく活用すればピコ秒の時間スケールで動作する超高速なデバイスが実現出来るかもしれません。一方で、超高速なダイナミクスは既存の電気測定手法では計測できないため、超短パルスレーザーという装置を使って、時間分解分光法という手法を用いて測定・研究しています。また、既に実社会で活用されている永久磁石や磁気記録メディアでは、磁化が動く時間スケールが数10ピコ秒程度であるため、この手法を使えばそのような実用材料の材料特性を明らかにすることもできます。このように、既存技術では実現できない超高速動作デバイスの実現に向けた基礎研究や応用上重要な磁性材料の基礎的な特性を明らかにする研究を行っています。

自分の研究では、薄膜試料作製や光学的・磁気的・電気的材料特性の評価といった、様々な観点から実験する必要があります。それらすべての測定を実施できるという点においてNIMSの研究環境は非常に魅力的です。特に利用しているNIMSの設備は、超高真空スパッタ装置・微細加工装置・超短パルスレーザー・クライオスタット(PPMS, SQUID)・X線回折装置・振動試料型磁力計(VSM)・磁気光学効果(MOKE)測定装置・透過型電子顕微鏡などが挙げられます。

多岐に渡る装置を使って多角的に研究できるため、新しい発見に出くわす機会にも恵まれておりそのたびにワクワクします。特にICYSでは、他のICYSリサーチフェローから異分野における最新の研究動向をセミナー等で拝見できるため、幅広い分野の研究内容に関してワクワクできる機会に恵まれており、非常に魅力的な組織だと思います。また、異分野の研究発表を通して、自分なりの視点で理解を深めていく過程が非常に刺激的で楽しいです。

NIMSで行える実験は多岐に渡るため、やりたいことを実現できるチャンスに恵まれていると思います。NIMSの論文・研究者情報はSAMURAIというサイトで検索できるようになっているため、ICYSに興味がある方は自身の研究に関するキーワード・実験手法などで検索し、どのような研究者と何ができそうか調べてみてはいかがでしょうか。