Zobrazeno 1 - 10
of 225
pro vyhledávání: '"Kozo Fujiwara"'
Autor:
Keisuke Fukuda, Satoru Miyamoto, Masahiro Nakahara, Shota Suzuki, Marwan Dhamrin, Kensaku Maeda, Kozo Fujiwara, Yukiharu Uraoka, Noritaka Usami
Publikováno v:
Scientific Reports, Vol 12, Iss 1, Pp 1-11 (2022)
Abstract A simple, low-cost, and non-vacuum epitaxial growth method to realize large-area semiconductors on crystalline silicon will become the game-changer for various applications. For example, we can expect the disruptive effect on the cost of lar
Externí odkaz:
https://doaj.org/article/2b6e4ce0041d44a2ad655a2e609115a5
Autor:
Ayumi Moriya, Kosuke Nakayama, Tappei Kawakami, Kensaku Maeda, Atsuya Tokuyama, Seigo Souma, Chaoyu Chen, José Avila, Maria Carmen Asensio, Miho Kitamura, Koji Horiba, Hiroshi Kumigashira, Takashi Takahashi, Kozo Fujiwara, Kouji Segawa, Takafumi Sato
Publikováno v:
Physical Review Research, Vol 5, Iss 2, p 023152 (2023)
We have performed micro-/nanofocused angle-resolved photoemission spectroscopy (ARPES) on cleaved single-crystal surfaces of bismuth to clarify the spatially resolved electronic states. While the dominant area of the cleaved surface was found to disp
Externí odkaz:
https://doaj.org/article/d650112bf7d5439ea270bfd2c7d6b0b7
Autor:
Yutaka Ohno, Tatsuya Yokoi, Yasuo Shimizu, Jie Ren, Koji Inoue, Yasuyoshi Nagai, Kentaro Kutsukake, Kozo Fujiwara, Atsutomo Nakamura, Katsuyuki Matsunaga, Hideto Yoshida
Publikováno v:
Science and Technology of Advanced Materials: Methods, Vol 1, Iss 1, Pp 169-180 (2021)
Three-dimensional distribution of arsenic (As) dopants at Σ3{111}, Σ9{221}, Σ9{114}, and Σ9{111}/{115} grain boundaries (GBs) in silicon (Si) is examined by correlative analytical methods using atom probe tomography (APT) combined with low-temper
Externí odkaz:
https://doaj.org/article/736b04e76fed4f568e4c10bff799a116
Publikováno v:
Crystals, Vol 12, Iss 6, p 837 (2022)
In the crystal growth of Na–Si clathrate (type I, Na8Si46) during Na evaporation from a Na–Si–Sn solution at 723 K, the composition of a Na–Sn flux in the starting material strongly influences the morphology and size of the formed clathrate c
Externí odkaz:
https://doaj.org/article/e2ab845effd84cbb9c311a98dc4cd715
Publikováno v:
Crystals, Vol 11, Iss 7, p 808 (2021)
Type-II Na24Si136 clathrate octahedral single crystals surrounded by {111} facets were grown by evaporating Na from a molten mixture of Na4Si4 and Na9Sn4 at 823 K for 12 h. One of the obtained single crystals was used as a seed for the following sing
Externí odkaz:
https://doaj.org/article/ff51a85ab58944e391a05f3332cb0cf2
Autor:
Genki Takakura, Mukannan Arivanandhan, Kensaku Maeda, Lu-Chung Chuang, Keiji Shiga, Haruhiko Morito, Kozo Fujiwara
Publikováno v:
Crystals, Vol 11, Iss 7, p 761 (2021)
We investigated the types of dendrites grown in Si1−xGex (0 < x < 1) melts, and also investigated the initiation of dendrite growth during unidirectional growth of Si1-xGex alloys. Si1−xGex (0 < x < 1) is a semiconductor alloy with a completely m
Externí odkaz:
https://doaj.org/article/2c5b2b1b0e6247d7b709b4c9dc525eb5
Publikováno v:
AIP Advances, Vol 8, Iss 7, Pp 075121-075121-5 (2018)
The instability of a crystal–melt interface during the directional growth of pure antimony was studied using an in-situ observation technique. The morphology of the crystal–melt interface was planar at a low growth velocity, while the interface t
Externí odkaz:
https://doaj.org/article/38f2ef0ac7a545ffb63be1f275ebefff
Publikováno v:
Crystals, Vol 8, Iss 8, p 317 (2018)
This paper reports on electron-beam-induced current (EBIC) characterization of special multicrystalline Si ingot by dendritic growth under high undercooling. Grain boundaries (GBs), dislocations, and their interaction with carbon related precipitates
Externí odkaz:
https://doaj.org/article/1bff73a493634b1c8a1a7cc4ae92fb7d
Publikováno v:
Crystals, Vol 7, Iss 6, p 170 (2017)
Dislocation-free tetragonal hen egg white (HEW) lysozyme crystals were grown from a seed crystal in a cell. The rates of tetragonal HEW lysozyme crystal growth normal to the (110) and (101) faces with and without a 1-MHz external electric field were
Externí odkaz:
https://doaj.org/article/f3a799bce82c4253ab1f35819269684b
Publikováno v:
Crystals, Vol 6, Iss 8, p 95 (2016)
X-ray diffraction (XRD) rocking-curves were measured for tetragonal hen egg white (HEW) lysozyme crystals grown with and without application of an external electric field, and the crystal quality was assessed according to the full width at half-maxim
Externí odkaz:
https://doaj.org/article/61a3a6a9e12c481694292e2f4304062c