Tohoku University. Research Profiles


"O" Theme - 5 Result(s)



OpenEnergySim: A Virtual World to Assess CO2 Emission


Intelligent Transport System (ITS) strategies can significantly reduce CO2 emissions of vehicles.
However, there is currently no low-cost yet effective method to investigate the impact of enegry-saving ITS measures on driving behavior. Further, there is no convenient collaboration platform to compare the results of such "green" ITS strategies at an international level.
Therefore, we implement OpenEnergySim, an online multi-user three-dimensional (3D) simulation space, which can serve three functions in one single consistent environment:
1. Visualization of microscopic traffic and CO2 emissions
2. Immersive driving of users in a simulated traffic network, where ITS measures can be applied and tested interactively
3. A shared real-time collaboration space aimed at international partners for studying and comparing the effects of green ITS strategies on CO2 emission reduction
OpenEnergySim can provide a unique platform for green ITS which fosters international collaboration and facilitates harmonization of models in the transport domain.

Graduate School of Information Sciences
KUWAHARA, Masao, Professor Ph.D

Optical Communication Technologies Supporting Global Networks



Ultrahigh-speed and highly efficient optical transmission is the driving force behind attempts to realize advanced high-speed networks that support ultrahigh-precision image transmission or ultra-realistic communication. We are actively engaged in ultrahigh bit rate transmission exceeding 1 Tbit/s/channel, and ultra-multi-level coherent QAM transmission in which the information is encoded in both the amplitude and phase of an optical beam. In addition, we are developing a mode-locked laser with extremely high stability and femtosecond lasers, photonic crystal fibers having many air holes in the fiber cross-section, multi-core fibers and their application to optical communication.

Targeted Application(s)/Industry

Possible collaboration with industries and national institutes includes the area of ultrahigh-speed optical transmission, coherent optical communication, optical amplifiers, novel optical fibers, fiber lasers, and optical fiber measurement technologies. We are currently carrying out collaborations with AIST, NICT, and several companies in the field of optical fibers, materials, components, and communication carriers.

Research Institute of Electrical Communication
NAKAZAWA, Masataka, Professor

Optical Manipulation of Neurons


Channelrhodopsins, light-sensitive proteins derived from green algae, are the natural photo-electric transducers. They are now applied to drive nerve cells and cardiac muscles by light under the name of optogenetics. We are generating and distributing channelrhodopsin variants optimized for optogenetics, animals such as mice, rats and zebrafishes as well as culture cells that are harboring channelrhodopsin variants. We are also developing the optical systems for manipulating above materials by light.

Targeted Application(s)/Industry
Drug discovery (assay/screening), Environment assessment, Medical devices, eg. a pacemaker replacing electricity with light as signaling.

Graduate School of Life Sciences
YAWO, Hiromu, Professor MD, PhD

Oral Biofilm Functional Analysis: from “What Are They?" to “What Are They Doing?"


A large number of microorganisms inhabit the oral cavity, such as the teeth, gingiva and tongue, in the form of oral biofilm. The oral cavity forms an ecosystem where the host (humans) and parasites (microorganisms) coexist. Disruption of the balance of this oral ecosystem leads to dental caries, periodontal diseases and oral malodor, and even deterioration of dental materials.

Using leading-edge techniques of anaerobic experimental systems including original and unique devices, as well as the notion of "omics" such as metagenomics and metabolomics, we conduct research on oral biofilm functions. Knowledge of oral biofilms, from "what are they?" to "what are they doing?", enables us to address their control, that is, prevention of and therapy for oral biofilm-associated diseases.

Targeted Application(s)/Industry
Risk assessment of oral biofilm-associated diseases, such as dental caries, periodontal disease, oral malodor and aspiration pneumonia
Effects of medicine and food ingredients on oral biofilm function
Evaluation of biofilm-mediated material deterioration

Division of Oral Ecology and Biochemistry, Graduate School of Dentistry
TAKAHASHI, Nobuhiro, Professor DDS, PhD

Oxide Electronics

Our research group investigates creation of functional oxides and their functionalities. We synthesize thin films by pulsed laser deposition and sputtering methods and bulk specimens, and develop their novel synthetic routes. Recently, we are studying electrically conducting rare earth oxides, transparent room temperature ferromagnetic semiconductors, and layered superconductors with monatomic Bi layer. We will develop our materials design by extending materials range and performing oxide heteroepitaxy.

Targeted Application(s)
Collaborative research in fields of oxide electronics with novel electric conducting oxides and oxide spintronics with ferromagnetic semiconductors and novel ferromagnetic oxides.

Advanced Institute for Materials Research
FUKUMRA, Tomoteru, Professor Doctor of Engineering