Kosaku Kato
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Explore the profile of Kosaku Kato including associated specialties, affiliations and a list of published articles.
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Articles
31
Citations
64
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Recent Articles
1.
Agulto V, Iwamoto T, Zhao Z, Liu S, Kato K, Nakajima M
Opt Lett
. 2025 Jan;
50(3):948-951.
PMID: 39888794
Terahertz (THz) measurements are increasingly valued for nondestructive testing of materials in power devices and other applications. Hence, there is a growing demand for highly accurate characterization methods in the...
2.
Yamakata A, Kato K, Ogawa T, Ogawa K, Ogawa M, Kato D, et al.
Angew Chem Int Ed Engl
. 2024 Dec;
:e202419624.
PMID: 39714333
Controlling trap depth is crucial to improve photocatalytic activity, but designing such crystal structures has been challenging. In this study, we discovered that in 2D materials like BiOCl and BiNbOCl,...
3.
Qi H, Yang J, Wang Y, Yang Z, Zhang J, Kato K, et al.
Opt Express
. 2024 Nov;
32(13):23180-23192.
PMID: 39538786
Extensive research has been conducted on generating THz waves using Smith-Purcell radiation, yet a portion of the electron bunch's interaction energy with the gratings is confined to the metal gratings'...
4.
Khoa Phan T, Wang Y, Shimizu T, Kato K, Agulto V, Isoyama G, et al.
Opt Lett
. 2024 Sep;
49(18):5039-5042.
PMID: 39270224
The nonlinear susceptibility in the terahertz region is expected to have a non-negligible imaginary part originating from the momentum-dependent scattering time of free carriers, but it has been scarcely reported....
5.
Yamakata A, Kato K, Urakami T, Tsujimura S, Murayama K, Higashi M, et al.
Chem Sci
. 2024 Aug;
15(32):12686-12694.
PMID: 39148803
The power conversion efficiency (PCE) of organic photovoltaics (OPVs) has reached more than 19% due to the rapid development of non-fullerene acceptors (NFAs). To compete with the PCEs (26%) of...
6.
Akabe Y, Shinohara K, Cadatal-Raduban M, Yoshikawa A, Shimizu T, Kato K, et al.
Opt Lett
. 2024 Jul;
49(14):3998-4001.
PMID: 39008761
We propose a system for imaging 1510 nm near-infrared (NIR) wavelength via upconversion (UC) luminescence in an Er-doped CaF crystal. Er ions are excited from the ground to the excited...
7.
Teng Z, Yang H, Zhang Q, Cai W, Lu Y, Kato K, et al.
Nat Chem
. 2024 Jun;
16(8):1250-1260.
PMID: 38918581
Providing affordable, safe drinking water and universal sanitation poses a grand societal challenge. Here we developed atomically dispersed Au on potassium-incorporated polymeric carbon nitride material that could simultaneously boost photocatalytic...
8.
Khoa Phan T, Tomoki S, Wang Y, Kato K, Agulto V, Isoyama G, et al.
Opt Lett
. 2024 Feb;
49(4):1073-1076.
PMID: 38359256
We report on the third harmonic generation (THG) in InSb semiconductor irradiated by a terahertz (THz) free electron laser (FEL). The conversion of 4 THz (wavelength 70 µm) FEL outputs...
9.
Agulto V, Ling Z, Zhao Z, Feng S, Kato K, Haga M, et al.
Opt Lett
. 2023 Dec;
48(23):6324-6327.
PMID: 38039258
The development of electromagnetic wave absorbers operating in the sub-terahertz (sub-THz) region is necessary in 6G communications. We designed and fabricated a sub-THz metamaterial absorber based on metal microcoils embedded...
10.
Miyoshi A, Okazaki M, Kato K, Kanazawa T, Yokoi T, Nishioka S, et al.
ACS Omega
. 2023 Nov;
8(44):41809-41815.
PMID: 37970046
The development of a photocatalyst capable of evolving H from water under visible light is important. Here, the photocatalytic activity of N/F-codoped rutile TiO (TiO:N,F) for H evolution was examined...