Noninvasive light emitting diode therapy: A novel approach for postinfarction ventricular arrhythmias and neuroimmune modulation

2019 ◽  
Author(s):  
Songyun Wang ◽  
Lin Wu ◽  
Yi Zhai ◽  
Xuemeng Li ◽  
Binxun Li ◽  
...  
Keyword(s):  
Ventricular Arrhythmias ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Novel Approach ◽  
Neuroimmune Modulation

Amoled Tft Pixel Circuitry for Flexible Displays on Metal Foils

2003 ◽  
Vol 769 ◽  
Author(s):  
Matias Troccoli ◽  
Themis Afentakis ◽  
Miltiadis K. Hatalis ◽  
Apostolos T. Voutsas ◽  
Masahiro Adachi ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Steel Substrate ◽  
Metal Foil ◽  
Flexible Displays ◽  
Active Matrix ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Metal Foils ◽  
Organic Light ◽  
Novel Approach

AbstractActive matrix organic light emitting diode displays based on thin, flexible metal foil substrates offer a novel approach to fabricate light, flexible and rugged displays. Metal foils allows devices to be fabricated at higher process temperatures yielding better device characteristics than plastic substrates. Furthermore, the conductive nature of such substrates enables more efficient use of pixel area through the use of a global power electrode. We are implementing Active Matrix Organic Light Emitting Diode (AMOLED) displays on flexible stainless steel substrate using 2 TFT and 4 TFT pixel circuit topologies with two different layout realizations that exploit the conductive properties of the substrate.

An Intelligent Personas System for Determining LED Lighting Design Requirements

2011 ◽  
Vol 145 ◽  
pp. 43-47
Author(s):  
Kevin C. Tseng ◽  
Chi Wei Chung
Keyword(s):  
Light Emitting Diode ◽  
Lighting Design ◽  
Development Stage ◽  
Design Team ◽  
Light Emitting ◽  
System A ◽  
Novel Approach ◽  
Design Requirements ◽  
Market Trends ◽  
Effective Design

The intent of this paper is to illustrate a personas system effective design to aid development of new products. This system would help a design team find and understand the lifestyle of target customers by using personas method in early concept development stage. In order to quickly realize market trends, easily collect customer requirements and readily integrate user opinions, the proposed system is capable of helping experts in different domains concurrently share their ideas in real time and discuss with each other without geographic limitation. In addition, a novel approach is proposed, named as ‘Personas Matrix’, to quantify the requirements which can accelerate the assessment of true needs. Finally, in order to validate the proposed system, a LED (Light-Emitting Diode) project was applied to test the functionality of the approach and the usefulness of the system thus helping the design team refine requirements, simplify requirement gathering, and prompt the assessment.

scholarly journals A Rat Model of Thrombosis in Common Carotid Artery Induced by Implantable Wireless Light-Emitting Diode Device

2014 ◽  
Vol 2014 ◽  
pp. 1-9 ◽  
Author(s):  
Jih-Chao Yeh ◽  
Kuo-Lun Huang ◽  
Yung-Chin Hsiao ◽  
Yu-Han Hsu ◽  
Yun-Han Lin ◽  
...  
Keyword(s):  
Carotid Artery ◽  
Common Carotid Artery ◽  
Thrombus Formation ◽  
Light Emitting Diode ◽  
Electrical Power ◽  
Light Emitting ◽  
Acute Occlusion ◽  
Power Intensity ◽  
Novel Approach ◽  
Arterial Endothelium

This work has developed a novel approach to form common carotid artery (CCA) thrombus in rats with a wireless implantable light-emitting diode (LED) device. The device mainly consists of an external controller and an internal LED assembly. The controller was responsible for wirelessly transmitting electrical power. The internal LED assembly served as an implant to receive the power and irradiate light on CCA. The thrombus formation was identified with animal sonography, 7T magnetic resonance imaging, and histopathologic examination. The present study showed that a LED assembly implanted on the outer surface of CCA could induce acute occlusion with single irradiation with 6 mW/cm2LED for 4 h. If intermittent irradiation with 4.3–4.5 mW/cm2LED for 2 h was shut off for 30 min, then irradiation for another 2 h was applied; the thrombus was observed to grow gradually and was totally occluded at 7 days. Compared with the contralateral CCA without LED irradiation, the arterial endothelium in the LED-irradiated artery was discontinued. Our study has shown that, by adjusting the duration of irradiation and the power intensity of LED, it is possible to produce acute occlusion and progressive thrombosis, which can be used as an animal model for antithrombotic drug development.

scholarly journals Inactivation of Escherichia Coli and Salmonella Using 365 and 395 nm High Intensity Pulsed Light Emitting Diodes

Foods ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 679 ◽  
Author(s):  
Amritha Prasad ◽  
Michael Gänzle ◽  
M. S. Roopesh
Keyword(s):  
Escherichia Coli ◽  
Foodborne Pathogens ◽  
High Intensity ◽  
Light Exposure ◽  
Light Emitting Diode ◽  
Antibacterial Efficacy ◽  
Pulsed Light ◽  
Light Emitting ◽  
E Coli ◽  
Novel Approach

High intensity pulsed light emitting diode (LED) treatment is a novel approach to inactivate foodborne pathogens. The objective of this study was to evaluate the antibacterial potential of high intensity 365 (UV-A) and 395 nm (NUV-Vis) LED treatments against Escherichia coli and Salmonella enterica at high and low water activity (aw) conditions, and to understand the influence of different process parameters on their antibacterial efficacy. Bacteria at high (in phosphate buffer saline, PBS) and low aw (aw = 0.75) conditions were treated with both the LEDs with specific doses at a fixed distance from the LEDs. The 365 nm LED showed more effectiveness in reducing the dried bacteria compared to 395 nm LED. The dry E. coli showed more resistance to LED treatments compared to Salmonella. The 365 and 395 nm LED treatments with ~658 J/cm2 dose resulted in reductions of 0.79 and 1.76 log CFU/g of Salmonella, respectively, on 0.75 aw pet foods. The LED treatments increased the surface temperature, resulting in water loss in the treated samples. This study showed that the dose, duration of light exposure, bacterial strain, and aw played a major role in the antibacterial efficacy of the 365 and 395 nm LEDs.

scholarly journals Visible Light Communication Survey

2019 ◽  
pp. 22-31
Author(s):  
Eszter Udvary
Keyword(s):  
Visible Light ◽  
Light Emitting Diode ◽  
Rapid Evolution ◽  
Data Communication ◽  
Communication Technologies ◽  
Visible Light Communication ◽  
Light Emitting ◽  
Main Research ◽  
Novel Approach ◽  
Increasing Demand

Communication applying visible light technology is a novel approach. Visible Light Communication (VLC) development is motivated by the increasing demand for wireless communication technologies. It has the potential to provide highspeed data communication with good security and improved energy efficiency. The rapid evolution of VLC was sustained by the LEDs performances. The Light-Emitting-Diode (LED) luminaires are capable of switching to the different light intensity at a fast rate. This function can be used for data transmission. This article focuses on the physical layer of the VLC links. It reviews the technology, the topology of the proposed connection, and the benefits of this approach. The main research trends are identified emphasizing state of the art in this area. It shows how VLC technology evolved and what are the performances achieved at this time. Various structures of the transmitter and receiver are studied, and different modulation schemes are investigated. Finally, numerous applications of VLC technology are presented.

scholarly journals Light-emitting diode effects on combined decellularization of tracheae. A novel approach to obtain biological scaffolds

2014 ◽  
Vol 29 (8) ◽  
pp. 485-492 ◽  
Author(s):  
Thaiane Cristine Evaristo ◽  
Flávia Cilene Maciel da CruzAlves ◽  
Andrei Moroz ◽  
Woner Mion ◽  
Michele Janegitz Acorci-Valério ◽  
...  
Keyword(s):  
Light Emitting Diode ◽  
Biological Scaffolds ◽  
Light Emitting ◽  
Novel Approach

scholarly journals Haemostasis in Oral Surgery with Blue-Violet Light

2018 ◽  
Vol 6 (4) ◽  
pp. 687-691 ◽  
Author(s):  
Daniela Veleska-Stevkoska ◽  
Filip Koneski
Keyword(s):  
Tooth Extraction ◽  
Oral Surgery ◽  
Light Emitting Diode ◽  
Control Group ◽  
Extraction Socket ◽  
Light Emitting ◽  
Violet Light ◽  
Novel Approach ◽  
Dental Procedures ◽  
Subjective Discomfort

BACKGROUND: The invasive dental procedures usually result in wounds accompanied by physiological bleeding. Even though the bleeding is easily manageable, it is still one of the major concerns of the patients and a reason for their subjective discomfort. Recently, a novel approach with light-emitting diode (LED) was introduced to control the bleeding. This study aims to examine the effectiveness of the irradiation with blue-violet light LEDs on the haemostasis.MATERIAL AND METHODS: The study included 40 patients with an indication for tooth extraction, divided into two groups: examination group (n = 30) and a control group (n = 10). The site of the extraction socket in the examination group was irradiated with LED (410 nm) until the bleeding stopped. The patients from the control group were treated by conventional gauze pressure to stop the bleeding (control group). The duration of irradiation and gauze pressure was measured and compared. The statistical analysis was performed with Student T-test.RESULTS:  The examination group showed the shorter duration of bleeding compared to the control group for 13.67 seconds and 156 seconds, respectively. The most of the cases in the examination group were irradiated in 10 seconds (70%), followed by irradiation of 20 seconds (23.3%) and 30 seconds (6.6%). In the control group, the average time to stop the bleeding by the conventional method was 156 second.CONCLUSION: The blue-violet LED light shortens the bleeding time from the extraction socket after tooth extraction and may be a promising method for achieving haemostasis.

Synchronization of Chaotic Quantum Dot Light Emitting Diodes under Optical Feedback Effect

2020 ◽  
pp. 144-148
Keyword(s):  
Quantum Dot ◽  
Delay Time ◽  
Chaos Synchronization ◽  
Optical Feedback ◽  
Light Emitting Diode ◽  
Feedback Effect ◽  
Complete Synchronization ◽  
Light Emitting ◽  
Coupling Methods ◽  
Coupling Parameters

Chaos synchronization of delayed quantum dot light emitting diode has been studied theortetically which are coupled via the unidirectional and bidirectional. at synchronization of chaotic, The dynamics is identical with delayed optical feedback for those coupling methods. Depending on the coupling parameters and delay time the system exhibits complete synchronization, . Under proper conditions, the receiver quantum dot light emitting diode can be satisfactorily synchronized with the transmitter quantum dot light emitting diode due to the optical feedback effect.

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