Micro LED Array Integrated Microneedle Delivers Multi-site Light to Advanced Brain Researches

A research team formed by specialists in photonics, electrical and computer engineering and medicine jointly developed a device which integrated a 10x10 array of glass microneedles with Micro LED to deliver light for stimulating neurons in brains of mammals.

Researchers from the University of Strathclyde, University of Utah and Fienstein Institute for Medical Research aim to advance optogenetic studies by connecting neural activities to specific cognitive functions in large mammals.

In the study, the researchers combined a glass microneedle array with a custom fabricated Micro LED device which delivers light to 100 needle tips and 81 interstitial surface sites to giving two-level optogenetic excitation of neurons in vivo. The device incorporates 181 units of 80 μm × 80μm Micro LEDs in an array on a 150-μm-thick GaN-on-sapphire wafer, coupled to a glass needle array on a 150-μm thick backplane.


(Image: McAlinden et al. 2019)

The research team said that the Micro LED integrated device provide 181 individually addressable illumination sites that enable high-resolution and large volume stimulation by controlling the drive current. The ability solved the difficulty of pairing light delivering with the tested area, offering the potential for new mammal behavior studies.

The research, titled "A Multi-site Micro LED Optrode Array for Neural Interfacing," was published in SPIE publication Neurophotonics and was funded by the NIH through the US BRAIN Initiative.

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.

Streetlights and high-bay fixtures require high flux and efficacy to meet the ever increasing demands for system efficiency and energy cost reduction for these applications. Today, LUXEON 5050 LEDs received an upgrade in both flux and efficacy... READ MORE

The recent outbreak of COVID-19 has prompted the large-scale search for practical solutions that can prevent the spread of the deadly virus — from researchers and scientists committed to finding a solution, to the manufacturers and consu... READ MORE