電気システム工学部門

研究成果 1979 2019

2015
14 引用 (Scopus)

Vortex pinning at low temperature under high magnetic field in SmBa2Cu3Oy superconducting films with high number density and small size of BaHfO3 nano-rods

Miura, S., Yoshida, Y., Ichino, Y., Tsuruta, A., Matsumoto, K., Ichinose, A. & Awaji, S., 10 7 2015, : : Superconductor Science and Technology. 28, 11, 114006.

研究成果: ジャーナルへの寄稿記事

Superconducting films
Growth temperature
superconducting films
Vortex flow
rods
3 引用 (Scopus)

ZCS interleaved boost converter with saturable inductors for reverse-recovery reduction

Martinez, W., Imaoka, J. & Yamamoto, M., 8 14 2015, 2015 IEEE 11th International Conference on Power Electronics and Drive Systems, PEDS 2015. Institute of Electrical and Electronics Engineers Inc., p. 855-861 7 p. 7203534. (Proceedings of the International Conference on Power Electronics and Drive Systems; 巻数 2015-August).

研究成果: 著書/レポートタイプへの貢献会議での発言

Recovery
Capacitors
Semiconductor materials
Cooling systems
Zero current switching

高電力密度昇圧コンバータにおける最大許容電力と小型化性能

木村翔太, 今岡淳 & 山本真義, 3 31 2015, : : パワーエレクトロニクス学会誌. 40, 0, p. 84-92 9 p.

研究成果: ジャーナルへの寄稿記事

Plug-in hybrid vehicles
Coupled circuits
Networks (circuits)
DC-DC converters
Magnetic flux
2014
9 引用 (Scopus)

Active damping for grid-connected LCL filter based on optimum controller design using injected grid current feedback only

Gaafar, M. A. & Shoyama, M., 11 11 2014, 2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014. Institute of Electrical and Electronics Engineers Inc., p. 3628-3633 6 p. 6953894. (2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014).

研究成果: 著書/レポートタイプへの貢献会議での発言

Capacitors
Damping
Feedback
Controllers
Sensors
1 引用 (Scopus)

Active damping for grid-connected LCL filter based on optimum P+R controller design using injected grid current feedback only

Gaafar, M. A. & Shoyama, M., 2014, : : Unknown Journal. 2014-January, January, 6972162.

研究成果: ジャーナルへの寄稿記事

damping
Capacitors
Damping
filter
Feedback
9 引用 (Scopus)

Adaptive robust PSS to enhance stabilization of interconnected power systems with high renewable energy penetration

Cuk Supriyadi, A. N., Takano, H., Murata, J. & Goda, T., 1 1 2014, : : Renewable Energy. 63, p. 767-774 8 p.

研究成果: ジャーナルへの寄稿記事

Electric power system interconnection
Stabilization
Damping
Data storage equipment
Identification (control systems)
3 引用 (Scopus)

A multi-level virtual conductor as a backbone of a DC power routing system

Ramadan, H. A., Imamura, Y., Kawachi, K., Yang, S. & Shoyama, M., 1 1 2014, 2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014. IEEE Computer Society, p. 863-867 5 p. 6869689. (2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014).

研究成果: 著書/レポートタイプへの貢献会議での発言

Electric potential
DC-DC converters
11 引用 (Scopus)

An efficient neutral point voltage control algorithm with reduced switching losses for three level inverters

Aly, M. & Shoyama, M., 3 17 2014, Conference Proceeding - 2014 IEEE International Conference on Power and Energy, PECon 2014. Muhamad, M. I. & Seroji, M. N. (版). Institute of Electrical and Electronics Engineers Inc., p. 330-335 6 p. 7062466. (Conference Proceeding - 2014 IEEE International Conference on Power and Energy, PECon 2014).

研究成果: 著書/レポートタイプへの貢献会議での発言

Voltage control
Electric potential
Controllers
Vector spaces
Hysteresis
2 引用 (Scopus)

A new stability assessment criterion for dc power systems using multi-level virtual conductors

Ramadan, H. A., Imamura, Y., Yang, S. & Shoyama, M., 1 1 2014, 2014 IEEE 15th Workshop on Control and Modeling for Power Electronics, COMPEL 2014. IEEE Computer Society, 6877220

研究成果: 著書/レポートタイプへの貢献会議での発言

Stability criteria
Conductor
Power System
Vertex of a graph
DC-DC converters
1 引用 (Scopus)

ANFIS based a two-phase interleaved boost converter for photovoltaic system

Radianto, D. & Shoyama, M., 10 16 2014, 4th International Conference on Innovative Computing Technology, INTECH 2014 and 3rd International Conference on Future Generation Communication Technologies, FGCT 2014. Institute of Electrical and Electronics Engineers Inc., p. 19-24 6 p. 6927754

研究成果: 著書/レポートタイプへの貢献会議での発言

Fuzzy inference
Adaptive systems
Modulation
Irradiation
Electric potential
18 引用 (Scopus)

A novel integrated magnetic core structure suitable for transformer-linked interleaved boost chopper circuit

Imaoka, J., Kimura, S., Martinez, W. & Yamamoto, M., 1 1 2014, : : IEEJ Journal of Industry Applications. 3, 5, p. 395-404 10 p.

研究成果: ジャーナルへの寄稿記事

Magnetic cores
Magnetic structure
Networks (circuits)
Magnetic circuits
Inductance
6 引用 (Scopus)

Application of minimum variance beamformer for estimation of tip position of a nasogastric tube

Sasayama, T., Gotoh, Y. & Enpuku, K., 11 1 2014, : : IEEE Transactions on Magnetics. 50, 11, 6971254.

研究成果: ジャーナルへの寄稿記事

Magnets
Brain
Liquids
Costs
2 引用 (Scopus)

A study of common mode noise current of bridgeless PFC circuit considering voltage change in Y-capacitors

Shi, K., Shoyama, M. & Tomioka, S., 12 23 2014, EMC 2014/Tokyo - 2014 International Symposium on Electromagnetic CompatibiIity, Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 73-76 4 p. 6997105. (IEEE International Symposium on Electromagnetic Compatibility; 巻数 2014-December).

研究成果: 著書/レポートタイプへの貢献会議での発言

capacitors
Capacitors
Networks (circuits)
Electric potential
electric potential
2 引用 (Scopus)

A study on abstract policy for acceleration of reinforcement learning

Faudzi, A. A. M., Takano, H. & Murata, J., 10 23 2014, Proceedings of the SICE Annual Conference. Society of Instrument and Control Engineers (SICE), p. 1793-1798 6 p. 6935300. (Proceedings of the SICE Annual Conference).

研究成果: 著書/レポートタイプへの貢献会議での発言

Reinforcement learning
Vector quantization
1 引用 (Scopus)

A unified model for the multi-level virtual conductor

Ramadan, H. A. & Shoyama, M., 1 1 2014, : : INTELEC, International Telecommunications Energy Conference (Proceedings). 2014-January, January, 6972202.

研究成果: ジャーナルへの寄稿Conference article

Controllers
Electric potential
DC-DC converters
Transient analysis
Frequency response
2 引用 (Scopus)

Common mode noise reduction in totem-pole bridgeless PFC converter

Shi, K., Shoyama, M. & Tomioka, S., 2 9 2014, Proceedings - 2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014. Institute of Electrical and Electronics Engineers Inc., p. 705-709 5 p. 7037943. (Proceedings - 2014 International Power Electronics and Application Conference and Exposition, IEEE PEAC 2014).

研究成果: 著書/レポートタイプへの貢献会議での発言

Noise abatement
Poles
Networks (circuits)
Switching frequency
Acoustic noise

Common-mode noise reduction with two symmetrical three-phase inverters

Zhang, X. & Shoyama, M., 12 23 2014, EMC 2014/Tokyo - 2014 International Symposium on Electromagnetic CompatibiIity, Proceedings. Institute of Electrical and Electronics Engineers Inc., p. 61-64 4 p. 6997098. (IEEE International Symposium on Electromagnetic Compatibility; 巻数 2014-December).

研究成果: 著書/レポートタイプへの貢献会議での発言

AC motors
inverters
Noise abatement
noise reduction
alternating current
5 引用 (Scopus)

Controlling ZnO nanowire surface density during its growth by altering morphological properties of a ZnO buffer layer by UV laser irradiation

Shimogaki, T., Kawahara, H., Nakao, S., Higashihata, M., Ikenoue, H., Nakata, Y., Nakamura, D. & Okada, T., 1 1 2014, : : Applied Physics A: Materials Science and Processing. 118, 4, p. 1239-1246 8 p.

研究成果: ジャーナルへの寄稿記事

Zinc Oxide
Laser beam effects
Buffer layers
Zinc oxide
ultraviolet lasers
1 引用 (Scopus)

Control of optical and electrical properties of ZnO nanocrystals by nanosecond-laser annealing

Shimogaki, T., Ofuji, T., Tetsuyama, N., Kawahara, H., Higashihata, M., Ikenoue, H., Nakamura, D. & Okada, T., 1 1 2014, Oxide-Based Materials and Devices V. SPIE, 89870G. (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 8987).

研究成果: 著書/レポートタイプへの貢献会議での発言

Zinc Oxide
laser annealing
Nanocrystals
Electrical Properties
Zinc oxide

Control of ZnO nano-crystals synthesized by nanoparticle-assisted pulsed laser deposition using buffer layer and laser irradiation

Nakamura, D., Shimogaki, T., Okazaki, K., Palani, I. A., Higashihata, M. & Okada, T., 1 1 2014, ZnO Nanocrystals and Allied Materials. Ramachandra Rao, M. S. & Okada, T. (版). p. 149-173 25 p. (Springer Series in Materials Science; 巻数 180).

研究成果: 著書/レポートタイプへの貢献

Laser beam effects
Buffer layers
Pulsed laser deposition
Nanowires
Nanoparticles
2 引用 (Scopus)

Day ahead global solar radiation forecasting using binary trees and factor analysis

Nomiyama, F., Murakami, T., Asai, J., Takano, H. & Murata, J., 1 1 2014, : : IEEJ Transactions on Power and Energy. 134, 4, p. 353-359 7 p.

研究成果: ジャーナルへの寄稿記事

Binary trees
Factor analysis
Solar radiation
2 引用 (Scopus)

Development of degaussing system of magnetic filters for high gradient magnetic separation to improve recovery ratio of trapped magnetic Nanobeads

Kajikawa, K., Ueda, H., Kamioka, Y., Agatsuma, K., Fuchino, S., Furuse, M., Iitsuka, T. & Nakamura, S., 2014, : : IEEE Transactions on Applied Superconductivity. 24, 3, 6595624.

研究成果: ジャーナルへの寄稿記事

Degaussing
Magnetic filters
Magnetic separation
Superconducting magnets
superconducting magnets
7 引用 (Scopus)

Development of superconducting high gradient magnetic separation system for medical protein separation

Fuchino, S., Furuse, M., Agatsuma, K., Kamioka, Y., Iitsuka, T., Nakamura, S., Ueda, H. & Kajikawa, K., 1 1 2014, : : IEEE Transactions on Applied Superconductivity. 24, 3, 6590026.

研究成果: ジャーナルへの寄稿記事

Magnetic separation
proteins
Proteins
gradients
Thermal load

Development of YBCO power transformer

Hayashi, H. & Iwakuma, M., 1 1 2014, : : Journal of the Institute of Electrical Engineers of Japan. 134, 8, p. 553-555 3 p.

研究成果: ジャーナルへの寄稿記事

Power transformers
3 引用 (Scopus)

DNA Detection using Microbeads-based Dielectrophoretic Impedance Measurement

Nakano, M., Ding, Z., Kasahara, H. & Suehiro, J., 12 12 2014, : : Proceedings of IEEE Sensors. 2014-December, December, p. 1010-1013 4 p., 6985174.

研究成果: ジャーナルへの寄稿Conference article

Electrophoresis
DNA
immobilization
polymerase chain reaction
Microelectrodes
8 引用 (Scopus)

Downsizing effects of integrated magnetic components in high power density DC-DC converters for EV and HEV

Kimura, S., Imaoka, J. & Yamamoto, M., 11 11 2014, 2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014. Institute of Electrical and Electronics Engineers Inc., p. 5761-5768 8 p. 6954192. (2014 IEEE Energy Conversion Congress and Exposition, ECCE 2014).

研究成果: 著書/レポートタイプへの貢献会議での発言

Hybrid vehicles
DC-DC converters
Electric vehicles
Railroad cars
6 引用 (Scopus)

Effect of Interim Annealing on Mechanical Strength of TFA-MOD Derived YBCO Coated Conductors

Takagi, Y., Nakaoka, K., Nakamura, T., Yoshizumi, M., Kiss, T., Izumi, T. & Shiohara, Y., 1 1 2014, : : Physics Procedia. 58, p. 138-141 4 p.

研究成果: ジャーナルへの寄稿Conference article

公開
conductors
tapes
annealing
porosity
crystal growth
3 引用 (Scopus)

Effect of laser annealing using high repetition rate pulsed laser on optical properties of phosphorus-ion-implanted ZnO nanorods

Shimogaki, T., Ofuji, T., Tetsuyama, N., Okazaki, K., Higashihata, M., Nakamura, D., Ikenoue, H., Asano, T. & Okada, T., 2 1 2014, : : Applied Physics A: Materials Science and Processing. 114, 2, p. 625-629 5 p.

研究成果: ジャーナルへの寄稿記事

laser annealing
Nanorods
Pulsed lasers
Phosphorus
nanorods

Effect of oxygen pressure on photoluminescence spectra and hall coefficients of Li-Ni Co-Doped ZnO films grown by a pulsed laser deposition

Sakai, K., Ishikura, K., Ohori, D., Nakamura, D., Fukuyama, A., Okada, T., Ramachandra Rao, M. S. & Ikari, T., 1 1 2014, ZnO Nanocrystals and Allied Materials. Ramachandra Rao, M. S. & Okada, T. (版). p. 91-99 9 p. (Springer Series in Materials Science; 巻数 180).

研究成果: 著書/レポートタイプへの貢献

Pulsed laser deposition
Photoluminescence
Doping (additives)
Oxygen
Electric properties
2 引用 (Scopus)

Efficiency improvement of power supply with transient current circuit using digital control

Takashita, H., Shoyama, M., Yonezawa, Y. & Nakashima, Y., 1 1 2014, 2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014. IEEE Computer Society, p. 3386-3391 6 p. 6869982. (2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014).

研究成果: 著書/レポートタイプへの貢献会議での発言

Switching circuits
Digital circuits
Switches
Networks (circuits)
Experiments

Efforts for power electronics education in a start-up company

Hattori, F., Imaoka, J., Ishitobi, M., Nagai, S. & Yamamoto, M., 1 1 2014, 2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014. IEEE Computer Society, p. 811-816 6 p. 6869681. (2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014).

研究成果: 著書/レポートタイプへの貢献会議での発言

Power electronics
Education
Industry
Electric network topology
Experiments

Electroluminescence from ZnO nanowire-based heterojunction LED

Nakamura, D., Tetsuyama, N., Shimogaki, T., Higashihata, M., Ikenoue, H. & Okada, T., 1 1 2014, Oxide-Based Materials and Devices V. SPIE, 89870H. (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 8987).

研究成果: 著書/レポートタイプへの貢献会議での発言

Electroluminescence
Heterojunction
Nanowires
Diode
electroluminescence

Emission characteristics of electrically- and optically-pumped single ZnO micro-spherical crystal

Nakamura, D., Shimogaki, T., Tetsuyama, N., Fusazaki, K., Mizokami, Y., Higashihata, M., Ikenoue, H. & Okada, T., 1 1 2014, Oxide-Based Materials and Devices V. SPIE, 89870B. (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 8987).

研究成果: 著書/レポートタイプへの貢献会議での発言

Zinc Oxide
Zinc oxide
zinc oxides
Microspheres
Crystal

Energy saving analysis simulator for utility systems

Tomita, Y. & Murata, J., 2014, : : IEEJ Transactions on Electronics, Information and Systems. 134, 4, p. 599-606 8 p.

研究成果: ジャーナルへの寄稿記事

Energy conservation
Simulators
Water supply systems
Flow structure
Graphical user interfaces
1 引用 (Scopus)

Error estimation of solar insolation forecasts

Zhang, P., Takano, H. & Murata, J., 1 1 2014, : : IEEJ Transactions on Power and Energy. 134, 4, p. 367-373 7 p.

研究成果: ジャーナルへの寄稿記事

Incident solar radiation
Error analysis
Mathematical operators
Statistics
2 引用 (Scopus)

Fabrication and characterization of spherical micro semiconductor crystals by laser ablation method

Shimogaki, T., Okazaki, K., Yamasaki, K., Fusazaki, K., Mizokami, Y., Tetsuyama, N., Higashihata, M., Ikenoue, H., Nakamura, D. & Okada, T., 6 1 2014, : : Applied Physics A: Materials Science and Processing. 117, 1, p. 269-273 5 p.

研究成果: ジャーナルへの寄稿記事

Zinc Oxide
Laser ablation
Zinc oxide
Microspheres
zinc oxides
6 引用 (Scopus)

Feasibility Study for Elimination of the Screening Current-Induced Fields in HTS Coil

Kim, K. L., Hahn, S., Choi, Y. H., Kim, Y. G., Kang, D. H., Kajikawa, K. & Lee, H. G., 1 1 2014, : : Journal of Superconductivity and Novel Magnetism. 28, 1, p. 83-88 6 p.

研究成果: ジャーナルへの寄稿記事

Induced currents
elimination
Screening
coils
screening
2 引用 (Scopus)

Feasible evaluations of coupled multilayer chip inductor for POL converter

Imaoka, J., Kimura, S., Itoh, Y., Yamamoto, M., Suzuki, M. & Kawano, K., 1 1 2014, 2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014. IEEE Computer Society, p. 883-890 8 p. 6869692. (2014 International Power Electronics Conference, IPEC-Hiroshima - ECCE Asia 2014).

研究成果: 著書/レポートタイプへの貢献会議での発言

Magnetic cores
Multilayers
Powders
Magnetic materials
Switching frequency
20 引用 (Scopus)

Flux pinning properties and microstructures of a SmBa2Cu 3Oy film with high number density of BaHfO3 nanorods deposited by using low-temperature growth technique

Miura, S., Yoshida, Y., Ichino, Y., Tsuruta, A., Matsumoto, K., Ichinose, A. & Awaji, S., 1 1 2014, : : Japanese Journal of Applied Physics. 53, 9, 090304.

研究成果: ジャーナルへの寄稿記事

Flux pinning
flux pinning
Growth temperature
Nanorods
nanorods
2 引用 (Scopus)

Flux Pinning Properties of a SmBa2Cu3O y Film Including High Number Density of BaHfO3 Nano-rods on LaAlO3 Substrate

Miura, S., Yoshida, Y., Ichino, Y., Matsumoto, K., Ichinose, A. & Awaji, S., 1 1 2014, : : Journal of Superconductivity and Novel Magnetism. 28, 2, p. 367-369 3 p.

研究成果: ジャーナルへの寄稿記事

Flux pinning
flux pinning
rods
Substrates
Pulsed laser deposition
6 引用 (Scopus)

Formation of one-dimensional ZnO nanowires from screw-dislocation-driven two-dimensional hexagonal stacking on diamond substrate using nanoparticle-assisted pulsed laser deposition

Senthil Kumar, E., Chandran, M., Bellarmine, F., Mannam, R., Nakamura, D., Higashihata, M., Okada, T. & Ramachandra Rao, M. S., 1 22 2014, : : Journal Physics D: Applied Physics. 47, 3, 034016.

研究成果: ジャーナルへの寄稿記事

Screw dislocations
Diamond
screw dislocations
Pulsed laser deposition
Nanowires

Harmonic signal analysis for magnetic nanoparticle imaging

Othman, N. B., Tsubaki, T., Kitahara, D., Yoshida, T. & Enpuku, K., 1 1 2014, : : Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy. 61, SUPLL.1, p. S133-S136

研究成果: ジャーナルへの寄稿記事

Signal analysis
Nanoparticles
Imaging techniques
Magnetic moments
Anisotropy
11 引用 (Scopus)

Highly sensitive liquid-phase detection of biological targets with magnetic markers and high Tc SQUID

Uchida, S., Higuchi, Y., Ueoka, Y., Yoshida, T., Enpuku, K., Adachi, S., Tanabe, K., Tsukamoto, A. & Kandori, A., 1 1 2014, : : IEEE Transactions on Applied Superconductivity. 24, 4, 6766191.

研究成果: ジャーナルへの寄稿記事

SQUIDs
markers
biotin
liquid phases
Biotin
11 引用 (Scopus)

Highly sensitive magnetic nanoparticle imaging using cooled-Cu/HTS- superconductor pickup coils

Morishige, T., Mihaya, T., Bai, S., Miyazaki, T., Yoshida, T., Matsuo, M. & Enpuku, K., 8 2014, : : IEEE Transactions on Applied Superconductivity. 24, 4, 6766251.

研究成果: ジャーナルへの寄稿記事

Pickups
Superconducting materials
coils
Nanoparticles
Imaging techniques
10 引用 (Scopus)

High power density DC-DC converter for home energy management systems

Martinez, W., Kimura, S., Imaoka, J., Yamamoto, M., Umetani, K., Arimura, S. & Hirano, T., 1 1 2014, Proceedings of 2014 International Conference on Intelligent Green Building and Smart Grid, IGBSG 2014. IEEE Computer Society, 6835247. (Proceedings of 2014 International Conference on Intelligent Green Building and Smart Grid, IGBSG 2014).

研究成果: 著書/レポートタイプへの貢献会議での発言

Energy management systems
DC-DC converters
Electronic equipment
Magnetic couplings
Global warming

High quality ZnO film formation by CO 2 laser annealing of buried films in SiO 2 matrix

Yamasaki, K., Ikenoue, H., Shimogaki, T., Watanabe, Y., Nakamura, D. & Okada, T., 1 1 2014, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XIX. SPIE, 89671E. (Proceedings of SPIE - The International Society for Optical Engineering; 巻数 8967).

研究成果: 著書/レポートタイプへの貢献会議での発言

laser annealing
Carbon Monoxide
Annealing
Laser
Lasers
3 引用 (Scopus)

Improvement of critical current densities in SmBa2Cu 3Oy, films with BaHfO3 nano-rods using low temperature growth technique

Miura, S., Yoshida, Y., Ichino, Y., Ichinose, A., Matsumoto, K. & Awaji, S., 1 1 2014, : : Journal of Physics: Conference Series. 507, PART 2, 022021.

研究成果: ジャーナルへの寄稿Conference article

critical current
rods
current density
pulsed laser deposition
temperature
1 引用 (Scopus)

Improvement of junction properties of ZnO nanorod/GaN heterojunction using selective laser processing

Nakamura, D., Tetsuyama, N., Shimogaki, T., Higashihata, M. & Okada, T., 1 1 2014, : : Journal of Laser Micro Nanoengineering. 9, 3, p. 209-212 4 p.

研究成果: ジャーナルへの寄稿記事

Laser beam effects
Nanorods
nanorods
Heterojunctions
heterojunctions
1 引用 (Scopus)

Influence of Sb as a catalyst in synthesize of Sb doped ZnO nanostructures using nanoparticle assisted pulsed laser deposition for UV led applications

Palani, I. A., Nakamura, D., Okazaki, K., Highasiata, M. & Okada, T., 1 1 2014, ZnO Nanocrystals and Allied Materials. Ramachandra Rao, M. S. & Okada, T. (版). p. 175-194 20 p. (Springer Series in Materials Science; 巻数 180).

研究成果: 著書/レポートタイプへの貢献

Pulsed laser deposition
Nanowires
Nanostructures
Nanoparticles
Catalysts