Akio Ito
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View article: Coherent synthesis of complex amplitude patterns using a photonic crystal surface-emitting laser
Coherent synthesis of complex amplitude patterns using a photonic crystal surface-emitting laser Open
Recent progress in nanotechnology has enabled the development of highly functional semiconductor devices for embedding into wearable devices. We previously demonstrated an on-chip device that emits two-dimensional far-field patterns direct…
View article: Novel silicon-based material decomposition images in diagnosis of pancreatic ductal adenocarcinoma: comparison with iodine-based and 50-keV virtual monoenergetic images
Novel silicon-based material decomposition images in diagnosis of pancreatic ductal adenocarcinoma: comparison with iodine-based and 50-keV virtual monoenergetic images Open
Objectives To identify the optimal material decomposition (MD) images for diagnosis of pancreatic ductal adenocarcinoma (PDAC) and evaluate the added value of the MD image to 50-keV virtual monoenergetic images (VMIs) by comparing with iod…
View article: Optimal trigger threshold with the bolus-tracking technique for the renal CT angiography protocol
Optimal trigger threshold with the bolus-tracking technique for the renal CT angiography protocol Open
Objectives This study aimed to investigate the optimal trigger threshold for the renal CT angiography (CTA) protocol with the bolus-tracking technique. Methods This retrospective study included patients who were suspected of renal diseases…
View article: Development and cross‐cultural validation of the Japanese version of the Adjustment Disorder‐New Module‐20
Development and cross‐cultural validation of the Japanese version of the Adjustment Disorder‐New Module‐20 Open
Aim Adjustment disorder (AjD) is a prevalent mental disorder with evolving definitions in the International Classification of Diseases , 11th Revision (ICD‐11). The Adjustment Disorder‐New Module‐20 (ADNM‐20) assesses six AjD symptom clust…
View article: Millimeter-wave generation with a room-temperature nonlinear quantum cascade laser
Millimeter-wave generation with a room-temperature nonlinear quantum cascade laser Open
Millimeter-wave difference frequency generation is reported for a dual-wavelength mid-infrared quantum cascade laser operating at room temperature. To overcome a low mid-infrared-to-terahertz conversion efficiency below 1 THz, a long-wavel…
View article: 1.5 µm wavelength NPN-type photonic-crystal surface-emitting laser exceeding 100 mW
1.5 µm wavelength NPN-type photonic-crystal surface-emitting laser exceeding 100 mW Open
A 1.5 µm laser diode has applications in eye-safe light detection and ranging (LiDAR) and optical communications via photonic integrated circuits. Photonic-crystal surface-emitting lasers (PCSELs) have lens-free applications in compact opt…
View article: Sustainable pest control inspired by prey–predator ultrasound interactions
Sustainable pest control inspired by prey–predator ultrasound interactions Open
Nocturnal moths evolved ultrasound-triggered escape maneuvers for avoiding predatory bats emitting ultrasonic echolocation calls. Using ultrasound for pest control is not a novel concept, but the technique has not been systemized because o…
View article: Dataset_for_"Sustainable pest control inspired by prey–predator ultrasound interactions".xlsx
Dataset_for_"Sustainable pest control inspired by prey–predator ultrasound interactions".xlsx Open
This is dataset for all the figures in " Sustainable pest control inspired by prey–predator ultrasound interactions " by Ryo Nakano, Akio Ito and Susumu Tokumaru.
View article: Dataset_20220913.xlsx
Dataset_20220913.xlsx Open
This is dataset for all the figures in " Sustainable pest control inspired by prey–predator ultrasound interactions " by Ryo Nakano, Akio Ito and Susumu Tokumaru.
View article: Functional Assessment of 12 Rare Allelic CYP2C9 Variants Identified in a Population of 4773 Japanese Individuals
Functional Assessment of 12 Rare Allelic CYP2C9 Variants Identified in a Population of 4773 Japanese Individuals Open
Cytochrome P450 2C9 (CYP2C9) is an important drug-metabolizing enzyme that contributes to the metabolism of approximately 15% of clinically used drugs, including warfarin, which is known for its narrow therapeutic window. Interindividual d…
View article: Heterologous expression of high-activity cytochrome P450 in mammalian cells
Heterologous expression of high-activity cytochrome P450 in mammalian cells Open
The evaluation of Cytochrome P450 (CYP) enzymatic activity is essential to estimate drug pharmacokinetics. Numerous CYP allelic variants have been identified; the functional characterisation of these variants is required for their applicat…
View article: Sub-terahertz and terahertz generation in long-wavelength quantum cascade lasers
Sub-terahertz and terahertz generation in long-wavelength quantum cascade lasers Open
Terahertz quantum cascade laser sources with intra-cavity non-linear frequency mixing are the first room-temperature electrically pumped monolithic semiconductor sources that operate in the 1.2–5.9 THz spectral range. However, high perform…
View article: Recent progress in terahertz difference-frequency quantum cascade laser sources
Recent progress in terahertz difference-frequency quantum cascade laser sources Open
Terahertz quantum cascade laser (QCL) sources based on intra-cavity difference frequency generation are currently the only electrically pumped monolithic semiconductor light sources operating at room temperature in the 1–6-THz spectral ran…
View article: Spectral purity and tunability of terahertz quantum cascade laser sources based on intracavity difference-frequency generation
Spectral purity and tunability of terahertz quantum cascade laser sources based on intracavity difference-frequency generation Open
Difference frequency generation quantum cascade lasers are well-suited for applications requiring narrow-linewidth emitters.
View article: Erratum: “High photoresponse in room temperature quantum cascade detector based on coupled quantum well design” [Appl. Phys. Lett. <b>109</b>, 261107 (2016)]
Erratum: “High photoresponse in room temperature quantum cascade detector based on coupled quantum well design” [Appl. Phys. Lett. <b>109</b>, 261107 (2016)] Open
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View article: Ultra-broadband room-temperature terahertz quantum cascade laser sources based on difference frequency generation
Ultra-broadband room-temperature terahertz quantum cascade laser sources based on difference frequency generation Open
We present ultra-broadband room temperature monolithic terahertz quantum cascade laser (QCL) sources based on intra-cavity difference frequency generation, emitting continuously more than one octave in frequency between 1.6 and 3.8 THz, wi…
View article: Practical Use of High-performance Patient Simulator in Pharmacy Education<b></b>
Practical Use of High-performance Patient Simulator in Pharmacy Education<b></b> Open
Greater importance has been placed in recent years on the need for students to clearly see the effects of medication on patients. In this study, we examined whether a simulator is a useful implement in practical pharmacology training. We a…