日本語
The University of Electro-Communications 
Graduate School of Informatics and Engineering, School of Informatics and Engineering 
Department of Engineering Science, Cluster III (Fundamental Science and Engineering) 

Professor 
Adarsh SANDHU 

 
Personal website  

Career
Fujitsu Laboratories Ltd, Atsugi, Japan  1986/07/01-1995/03/31 
Cavendish Laboratory, Cambridge University  Visiting Scholar  1992/08/01-1993/08/31 
Tokai University  1995/04/01-2002/07/31 
Tokyo Institute of Technology  2002/08/01-2010/03/31 
Electronics-Inspired Interdisciplinary Research Institute (EIIRIS)  2010/04/01-2015/03/31 
University of Electro-Communications (UEC)  2015/04/01-Present 
電気通信大学  学長補佐(国際広報担当)  2015/10/01-2016/03/31 

Academic background
University of Leeds  Department of Physics  Other  1982/06/30 
University of Manchester  School of Electrical and Electronic Engineering  Other  1986/06/30  Completed 

Academic degrees
Advanced Epitaxial Semiconductor Technology  University of Manchester  1986/06/01 

Outlines of current research
Members of the Sandhu Laboratory are conducting the following research:
・Fabrication of "wet-capsules" for the observation of samples in liquid for transmission electron microscopy. Theme3:Medical application (Magnetic particles, Smartphone platform and application development , Magnetotactic bacteria,)
Research Outline
An easy to use method for detecting bio-materials is greatly demanded in the field of medical diagnostics, drug development, etc.. We are developing magnetic labels using magnetic For detecting magnetic particles, we are conducting several methods; Semiconductor-based magnetic sensors, micro- and nano-sizde magnetic particles’ self-assembly, laser light transmittance dependence on the length of particle chains in rotating magnetic field, and reflected light shift by pours silicon and grating. Moreover the development of a portable diagnostics platform by Smartphone and application for measuring reflected light shift has been carried out as well as spectrometer attachment by 3D printer and ball lens portable microscopy.
In addition, we are demonstrating magnetotactic bacteria for a new-generation manipulator and carrier.
・Graphene synthesis by chemical vapor deposition and device fabrication of 2D materials including MoS2, MoSe2, and WS2
・Development of Hall effect sensors for applications including harash radiation, high temperatures, and other extreme environments.
・Medical diagnostics for point of care treatment applications . Magnetic particles, Smartphone platform and application development , Magnetotactic bacteria.
Theme1:Fabrication of ‘wet-capsules’ for the observation of samples in liquid for transmission electron microscopy
Research Outline
There is increasing demand for measurement systems capable of the real-time observation of nano-structures, biochemical and cellular interactions, and monitoring chemical reactions in the liquid phase by researchers working in the fields of biology, chemistry, physics and related interdisciplinary areas. To realize such nanoscale observations, the ultra-high resolution of TEM (Transmission Electron Microscope) offers great potential. However, high-vacuum is necessary for TEM measurements, which limits to the observation of dry samples fixed onto TEM grids. This mode of measurement precludes investigation of the behavior of samples in solution.
To overcome its difficulty, we have proposed and are fabricating micro-channel TEM capsules, which enable TEM imaging of samples in solution, in real time. The figure on the right shows the structure of the ‘wet-capsule’ for TEM. The capsule consists of ultra-thin membranes that allow the penetration of electron beam.
Theme2:2D material-based devices and a Hall effect sensors for magnetic field measurement in extreme conditions
Research Outline
Graphene has unique and physical properties that include high electron mobility, optical penetration, etc.. In our laboratory, thermal Chemical Vapor Deposition (CVD) is being used for the synthesis of a graphene films. Moreover we are developing so-called 2D material such as grapheme, MoS2, WS2.
We are also developing AlGaN/GaN based Hall effect magnetic sensors for use in extreme environments. Such devices are required for monitoring rotation in electric car engines, space satellites, and radiation environment. Typical semiconductor magnetic devices are made of silicon or gallium arsenide. However, their band gaps are small thus limiting device operation to 200℃ or less. Therefore we focused on AlGaN/GaN heterostructures which offer band gap larger than typical semiconductor materials. 

Classes responsible within the university
2017  Graduate Technical English  Spring semester  Graduate, IS  Master's program  Liberal arts 
2017  Modern Engineering and Science  Spring semester  Undergraduate, daytime  Liberal arts 
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Classes responsible in other universities
2013  基礎科学技術英語  豊橋技術科学大学 
2013  電磁波工学  豊橋技術科学大学 
2014  電磁波工学  豊橋技術科学大学 
2014  基礎科学技術英語  豊橋技術科学大学 
2014  英語COMMUNICATION  豊橋技術科学大学 
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Education and research activities in foreign countries
精華大学合同プログラム用集中講義「電子物性論」  2006/04-Present 
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Current research areas
Medical systems 
Atomic/Molecular/Quantum electronics 
Electronic materials/ Electric materials 
Electron device/ Electronic equipment 

Research keywords
Nanobioelectronics/Electron Devices/Scanning Hall Probe Microscopy/Medical Diagnostics 

Current research subjects
二次元材料デバイス開発(グラフェン、MoS2、MoSe2など)や極端環境下(低温、高温、放射線)にて動作可能なホール効果磁気センサの開発  2002/08/01-Present  電子移動度や強度、薄さに優れたグラフェンを我々の研究室では熱CVD法により金属触媒を用いた成膜及びデバイスの開発を行っている。またバンドギャップを有する二次元材料(MoS2、WS2)を用いたデバイスの開発も行っている。 また自動車エンジン近傍や人工衛星、核融合発電プラントなど高温や低温、さらには放射線に晒される環境における磁場検出へ向けたセンサ開発を行っている。一般的なシリコンなどの半導体材料は200°C以上での動作出来ないが、本研究室ではAlGaN/GaNへテロ構造を用い高温・低温下で高感度であり、さらに陽子線照射を行い高放射線下でも動作するセンサの開発に成功した。加えて走査型ホール・プローブ顕微鏡(磁区観察、磁界可視化)の開発も合わせて行っている。 
液体中試料の観察用TEMホルダー開発  2013/04/01-Present  液体中での細胞の活動に始まりナノ粒子の化学的生成過程など、液体内でしかもナノレベルでどのようなことが起きているのか観察したいという需要は各方面から非常に大きい。それを可能にする技術として透過型電子顕微鏡(TEM)が最も有力な手段として挙げられる。しかしTEM での観察には超高真空な状態が必要であることから試料は乾いていることが大前提であり、リアルタイムでの液中での反応や活動の観察は不可能とされてきた。 そこで高さが数百ナノメートルの流路を形成し、そこにTEM観察用の窓を形成して電子線を透過できるような仕組みを考え、現在作製および実用化に向けた実験を行っている。 
磁性粒子、スマートフォン、走磁性細菌を用いた医療応用技術  2014/04/01-Present  磁性粒子を標識とした生体物質検出手法の開発を行っている。具体的には半導体磁気センサを用いた検出や基板上に固定化されたナノ磁性粒子上にマイクロ磁性粒子が磁気的に吸着させる自己組織化法、回転磁場による粒子のチェーン長さに対するレーザー光の透過率検出法などポーラスシリコンや回折格子を用いた反射光波長シフト法など様々な観点から磁性粒子検出を行っている。 またポータブル検出プラットフォームとしてスマートフォンを用いた反射ピーク検出アプリや3Dプリンタを用いた分光器アタッチメントの作製、ボールレンズ携帯顕微鏡の開発も行っている。さらに走磁性細菌を用いた新しいマニピュレーターやキャリアーの開発など多方面から新たな医療技術開発を行っている。 
蛍光磁性ビ-ズを利用した高速高感度免疫測定システムの実用化開発  2014/12/01-Present  蛍光磁性ビーズを利用した高速・高感度免疫測定用小型デバイスに向けた直流・交流磁界による磁性ビーズの磁気操作技術開発 

Published books
Book  Bandgap Semiconductors : Fundamental Properties and Modern Photonic and Electronic Devices 2007  Kiyoshi Takahashi, Akihiko Yoshikawa, Adarsh Sandhu  Springer  2007/04 
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Published papers
Paper  Yes  High-performance near-infrared photodetector based on nano-layered MoSe2  Joint  Pil Ju Ko, Abdelkader Abderrahmane, Nam–Hoon Kim and Adarsh Sandhu  Semiconductor Science and Technology  32/ 6, 1-8  2017/05/22 
Paper  Yes  Wide wavelength range tunable one-dimensional silicon nitride nano-grating guided mode resonance filter based on azimuthal rotation  Joint  Ryoji Yukino, Pankaj K. Sahoo, Jaiyam Sharma, Tsukasa Takamura, Joby Joseph, Adarsh Sandhu  AIP Advances  7, 015313-1-015313-6  2017/01/30  10.1063/1.4975344 
Paper  Yes  Gate-tunable optoelectronic properties of a nano-layered GaSe photodetector  Joint  Abdelkader Abderrahmane, Pan-Gum Jung, Nam-Hoon Kim, Pil Ju Ko, Adarsh Sandhu  Optical Materials Express  7/ 2, 587-592  2017/01/26  10.1364/OME.7.000587 
Paper  Yes  Fast and sensitive medical diagnostic protocol based on integrating circular current lines for magnetic washing and optical detection of fluorescent magnetic nanobeads  Joint  Jaiyam Sharma, Shunji Ishizawa, Ryoji Yukino, Tsukasa Takamura, Naohiro Hanyu, Hiroshi Yasuno, Hiroshi Handa, Adarsh Sandhu  Sensing and Bio-Sensing Research  9, 7-12  2016/07  10.1016/j.sbsr.2016.05.002 
Paper  Yes  Thickness dependence on the optoelectronic properties of multilayered GaSe based photodetector  Joint  Pil Ju Ko, Abdelkader Abderrahmane, Tsukasa Takamura, Nam-Hoon Kim, Adarsh Sandhu  Nanotechnology  27/ 32, 325202-1-325202-6  2016/06/29  10.1088/0957-4484/27/32/325202 
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Research presentations
Oral presentation for an academic conference  Magnetic nanoparticle-based nano-grating guided-mode resonance biosensors  MNTC International Symposium 2017  Yes  Ryoji YUKINO, Sharma JAIYAM, Tsukasa TAKAMURA, Joby JOSEPH and Adarsh SANDHU  2017/08/27 
Oral presentation for an academic conference  Medical Diagnostics with Functionalized Fluorescent Magnetic Nanobeads and Planar Micro-coils  ICMAT 2017  No  Jaiyam SHARMA, Ryoji YUKINO, Tsukasa TAKAMURA, Adarsh SANDHU  2017/06/19 
Oral presentation for an academic conference  Magnetic nanoparticle-based nano-grating guided-mode resonance biosensors  INTERMAG Europe 2017  Yes  R. Yukino, J. Sharma, T. Takamura, J. Joseph and A. Sandhu  2017/04/25 
Oral presentation for an academic conference  Novel capsule for nanoscale observation of materials in liquid by transmission electron microscopy  The Irago Conference 2016  No  T. Takamura, R. Yukino, H. Tahara, A. Abderrahmane, A. Sandhu  2016/11/01 
Oral presentation for an academic conference  Surface functionalization of magnetotactic bacteria for precise transportation of tiny loadings  The Irago Conference 2016  No  T. Takamura, A. Arakaki, A. Sandhu  2016/11/01 
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Intellectual property rights
Patent  携帯型フィルタレス顕微鏡、及びこれを用いた蛍光観察方法  特願2017-154097  2017/08/09  Filed 
Patent  磁性粒子を用いたバイオセンシング方法及び装置  特願2016-026823  2016/02/16  Filed 
Patent  波長選択フィルタ装置、波長選択フィルタリング方法、及びフィルタ素子のキャリブレーション方法  特願2016-010981  2016/01/22  特開2017-129821  2017/07/27  Published 
Patent  ウェット試料の封入用カプセルならびに構成部材およびその製造方法  特願2013-106479  2013/05/20  特開2014-229401  2014/12/08  Published 
Patent  基板上の粒子の検出装置  特願2016-026818  2016/02/16  特許第6155452号  2017/06/16  Filed 
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Awards
ICF 11 New Product & Novel Technology Award  MISA-Diagnostic System Medical Diagnostic Protocol baced on Magnetically Induced Self-Assembly Superparamagnetic Beads  2013/05 
M&BE7 Outstanding Student Poster Awards  Single molecule observation of lipid bilayers on graphene oxide  2013/03 
外国人審査員ポスター賞  Characterization of self-formed living electrodes produced from graphene oxide by graphene oxide-reducing bacteria  2012/09 
学校法人東海大学松前重義記念基金, 巽良知研究奨励賞(2001年度)  巽良知研究奨励賞  2001/04 
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Past records of joint or funded research
磁性微粒子によるバイオナノ物質の可視化及びバイオセンシング  2011-Present  Joint research  Research commissioned by a company 
絶縁油中の微量PCB(ポリ塩化ビフェニル)の定量及び分別・回収技術の確立に向けた研究  2011-Present  Joint research  Research commissioned by a company 
バイオセンサー  2011-Present  Joint research  Research commissioned by a company 
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Memberships of academic societies
日本外国特派員協会 
IEEE Magnetics Society 
日本磁気学会 
応用物理学会 
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Involvement in conference and research meetings
第62回 磁気工学専門研究会  世話人  2016/11/18 
The Irago Conference 2016  Program Chairperson, Editor  2016/11/01 
第61回 磁気工学専門研究会  世話人  2016/10/13 
第60回 磁気工学専門研究会  世話人  2016/07/29 
第58回 磁気工学専門研究会  世話人  2016/03/04 
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Committee or council involvement
応用物理学会  代議員推薦委員会  2015/04/01-Present 
応用物理学会  会員サービス委員会  2015/04/01-Present 
応用物理学会  総務(全般)会議  2015/04/01-Present 
応用物理学会  JSAP International Member’s Chapter(JIMeC)  2014/04/01-Present 
応用物理学会  理事  2014/04/01-2016/03/31 
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Committee activity in the University
学術院代議委員会  委員  2016/04-2018/03 
学長補佐(国際広報担当)  2016/04-2018/03 
UEC Bulletin Editorial commiitee  企画、執筆、編集  2015/04-Present 
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