Zobrazeno 1 - 10
of 48
pro vyhledávání: '"Hiroki Wakatsuchi"'
Autor:
Masaya Tashiro, Kosuke Ide, Kosei Asano, Satoshi Ishii, Yuta Sugiura, Akira Uchiyama, Hiroki Wakatsuchi
Publikováno v:
NPG Asia Materials, Vol 16, Iss 1, Pp 1-10 (2024)
Abstract IoT sensors are crucial for visualizing multidimensional and multimodal information and enabling future IT applications/services such as cyber-physical spaces, digital twins, autonomous driving, smart cities and virtual/augmented reality (VR
Externí odkaz:
https://doaj.org/article/eaf84f484e964ced86145290be410966
Publikováno v:
Advanced Photonics Research, Vol 5, Iss 8, Pp n/a-n/a (2024)
In recent years, metasurfaces composed of lumped nonlinear circuits have been reported to exhibit the capability of detecting specific electromagnetic waves, even when the waves are of the same frequency, depending on their respective waveforms or, m
Externí odkaz:
https://doaj.org/article/7a51b86f557843a1887a859c4bf84e25
Autor:
Hiroki Takeshita, Ashif Aminulloh Fathnan, Daisuke Nita, Atsuko Nagata, Shinya Sugiura, Hiroki Wakatsuchi
Publikováno v:
Nature Communications, Vol 15, Iss 1, Pp 1-11 (2024)
Abstract Wave phenomena can be artificially engineered by scattering from metasurfaces, which aids in the design of radio-frequency and optical devices for wireless communication, sensing, imaging, wireless power transfer and bio/medical applications
Externí odkaz:
https://doaj.org/article/c3547282a25b4806a0b11c94bbc07b8e
Autor:
Kairi Takimoto, Kazutomo Nakamura, Peter Njogu, Kota Suzuki, Masato Sugimoto, Ashif Fathnan, Takashi Kondo, Masayuki Mori, Daisuke Anzai, Hiroki Wakatsuchi
Publikováno v:
Electronics Letters, Vol 59, Iss 23, Pp n/a-n/a (2023)
Abstract A passive, low‐cost, paper‐based intelligent reflecting surface (IRS) is designed to reflect a signal in a desired direction to overcome non‐line‐of‐sight scenarios in indoor environments. The IRS is fabricated using conductive sil
Externí odkaz:
https://doaj.org/article/cf03adaa47df4b63b4137e71a74f3b5c
Autor:
Shiori Imai, Haruki Homma, Kairi Takimoto, Mizuki Tanikawa, Jin Nakamura, Masaya Kaneko, Yuya Osaki, Kiichi Niitsu, Yongzhi Cheng, Ashif Aminulloh Fathnan, Hiroki Wakatsuchi
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-9 (2023)
Abstract In this study, we numerically demonstrate how the response of recently reported circuit-based metasurfaces is characterized by their circuit parameters. These metasurfaces, which include a set of four diodes as a full wave rectifier, are cap
Externí odkaz:
https://doaj.org/article/7df205a46b894acebfe5a5bc8b223c1d
Autor:
Daiju Ushikoshi, Riku Higashiura, Kaito Tachi, Ashif Aminulloh Fathnan, Suhair Mahmood, Hiroki Takeshita, Haruki Homma, Muhammad Rizwan Akram, Stefano Vellucci, Jiyeon Lee, Alessandro Toscano, Filiberto Bilotti, Christos Christopoulos, Hiroki Wakatsuchi
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-15 (2023)
Metasurface-based antennas show variable beam-patterns in response to the time width of electromagnetic pulses. This concept advances the design of antennas and wireless communication environments by using the pulse width as a new degree of freedom.
Externí odkaz:
https://doaj.org/article/e9ce226b928d45308bb03f3b8fa581f8
Autor:
Kairi Takimoto, Hiroki Takeshita, Ashif Aminulloh Fathnan, Daisuke Anzai, Shinya Sugiura, Hiroki Wakatsuchi
Publikováno v:
APL Materials, Vol 11, Iss 8, Pp 081116-081116-8 (2023)
We present a new concept of metasurface filters to preferentially extract pulsed waveforms at a constant frequency from a complex superimposed input signal. This filtering capability is realized using circuit-based metasurfaces, denoted waveform-sele
Externí odkaz:
https://doaj.org/article/491cc6d47d294e82a8051273de520a1d
Publikováno v:
Electronics Letters, Vol 58, Iss 25, Pp 937-939 (2022)
Abstract The authors present metasurface‐inspired maintenance‐free Internet of things (IoT) tags that can be characterised not only by frequency‐domain profiles but also by time‐domain profiles. In particular, time‐domain characterisation i
Externí odkaz:
https://doaj.org/article/1a43de42d08d4599830af9197b44d84c
Publikováno v:
IEEE Access, Vol 5, Pp 27439-27452 (2017)
We demonstrate a series of nonlinear, active, and tunable metasurfaces for a variety of electromagnetic applications. The metasurfaces have achieved a range of exotic properties by populating nonlinear or active circuit components on a periodically p
Externí odkaz:
https://doaj.org/article/3306a19cbfe54146acaeb235bfca7d4f
Autor:
Haruki Homma, Muhammad Rizwan Akram, Ashif Aminulloh Fathnan, Jiyeon Lee, Christos Christopoulos, Hiroki Wakatsuchi
Publikováno v:
Nanophotonics. 11:1989-2000
Anisotropic impedance surfaces have been used to control surface wave propagation, which has benefited applications across a variety of fields including radio-frequency (RF) and optical devices, sensing, electromagnetic compatibility, wireless power
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fd1b7443f102a4fc6f1fc988c9c1e049
https://doi.org/10.1515/nanoph-2021-0659
https://doi.org/10.1515/nanoph-2021-0659