Fully Integrated Self-Powered Electrical Stimulation Cell Culture Dish for Noncontact High-Efficiency Plasmid Transfection

2021 ◽  
Author(s):  
Miaomiao Yuan ◽  
Xiaoying Li ◽  
Jingfeng Liu ◽  
Youbin Zheng ◽  
Li Cheng ◽  
...  
Keyword(s):  
Cell Culture ◽  
Electrical Stimulation ◽  
High Efficiency ◽  
Culture Dish ◽  
Fully Integrated ◽  
Self Powered ◽  
Plasmid Transfection

Circuit Techniques for High Efficiency Fully-Integrated Switched-Capacitor Converters

2020 ◽  
pp. 1-1
Author(s):  
Junmin Jiang ◽  
Xun Liu ◽  
Wing-Hung Ki ◽  
Philip K. T. Mok ◽  
Yan Lu
Keyword(s):  
High Efficiency ◽  
Switched Capacitor ◽  
Fully Integrated ◽  
Circuit Techniques

scholarly journals Triboelectric Effect Enabled Self-Powered, Point-of-Care Diagnostics: Opportunities for Developing ASSURED and REASSURED Devices

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 337
Author(s):  
Navneet Soin ◽  
Sam J. Fishlock ◽  
Colin Kelsey ◽  
Suzanne Smith
Keyword(s):  
High Efficiency ◽  
Resource Constraints ◽  
Point Of Care ◽  
Wearable Sensors ◽  
Middle Income ◽  
Physiological Signal ◽  
Point Of Care Diagnostics ◽  
Self Powered ◽  
Triboelectric Nanogenerators ◽  
Triboelectric Effect

The use of rapid point-of-care (PoC) diagnostics in conjunction with physiological signal monitoring has seen tremendous progress in their availability and uptake, particularly in low- and middle-income countries (LMICs). However, to truly overcome infrastructural and resource constraints, there is an urgent need for self-powered devices which can enable on-demand and/or continuous monitoring of patients. The past decade has seen the rapid rise of triboelectric nanogenerators (TENGs) as the choice for high-efficiency energy harvesting for developing self-powered systems as well as for use as sensors. This review provides an overview of the current state of the art of such wearable sensors and end-to-end solutions for physiological and biomarker monitoring. We further discuss the current constraints and bottlenecks of these devices and systems and provide an outlook on the development of TENG-enabled PoC/monitoring devices that could eventually meet criteria formulated specifically for use in LMICs.

Towards self-powered technique in underwater robots via a high-efficiency electromagnetic transducer with circularly abrupt magnetic flux density change

2021 ◽  
Vol 302 ◽  
pp. 117569
Author(s):  
Zhongjie Li ◽  
Xiaomeng Jiang ◽  
Peilun Yin ◽  
Lihua Tang ◽  
Hao Wu ◽  
...  
Keyword(s):  
Magnetic Flux ◽  
Flux Density ◽  
High Efficiency ◽  
Density Change ◽  
Magnetic Flux Density ◽  
Underwater Robots ◽  
Electromagnetic Transducer ◽  
Self Powered

Dimensional Cell Culture Dish for In Vivo-Like Cell Culture

2010 ◽  
pp. 103-108
Author(s):  
Y. Furutani ◽  
T. Tamura ◽  
M. Kodama
Keyword(s):  
Cell Culture ◽  
Culture Dish ◽  
Dimensional Cell

Activity-dependent induction of functional secretory properties at cultured neuromuscular synapses of Helisoma

1996 ◽  
Vol 76 (4) ◽  
pp. 2635-2643 ◽  
Author(s):  
J. C. Poyer ◽  
M. J. Zoran
Keyword(s):  
Cell Culture ◽  
Critical Role ◽  
Muscle Fibers ◽  
Pond Snail ◽  
Culture Dish ◽  
Neuromuscular Synapses ◽  
Neuronal Processes ◽  
Activity Dependent

1. The role of activity-dependent mechanisms in target-mediated induction of secretory properties was investigated at regenerating neuromuscular synapses of the American pond snail, Helisoma trivolvis, in cell culture. 2. Identified motoneurons were isolated into cell culture conditions that promoted neurite outgrowth. Buccal neurons 19 (B19) were cultured alone for 2 days, at which time dissociated muscle fibers were manipulated into contact with newly formed neurites. 3. Immediately before the plating of muscle fibers, the sodium channel blocker, tetrodotoxin (TTX), or the acetylcholine receptor antagonist, d-tubocurarine chloride (curare), was added to the culture dish. After 48 h of exposure, the inhibitors were removed by repeated dilution of the culture medium and electrophysiological analyses were performed. 4. Cholinoceptive assay cells were manipulated into contact with the presynaptic neurons to assess secretory properties along neuronal processes. Assay cells were used to control for variations in postsynaptic sensitivity that could result from long-term exposure to activity inhibitors. 5. These analyses demonstrated that inhibition of TTX-sensitive presynaptic activity and inhibition of curare-sensitive postsynaptic activation both blocked the induction of excitation-secretion coupling typically induced in these motoneurons by appropriate target contact. Neuron B5, which rapidly acquires functional synaptic properties in vitro, was unaffected in its secretory function by 48 h of activity inhibition. 6. Acquisition of secretory competence was not suppressed due to a reduction in the viability or long-term changes in excitability of the activity-inhibited neurons, as indicated by analyses of electrophysiological properties. 7. Although target-contact and activity both participated in the induction of secretory modifications in neuron B19, target-mediated changes did not involve retrograde effects on presynaptic neuronal excitability. 8. We hypothesize that contact-mediated mechanisms govern the initiation of presynaptic modifications in B19, however, our data indicate that the acquisition of functional excitation-secretion coupling also involves activity-dependent mechanisms. Although the mechanistic role of activity remains undefined, our results suggest that the activation of the target muscle plays a critical role in a retrograde signaling pathway underlying maturation of a functional secretory apparatus in target-contacted neuronal processes.

scholarly journals Fully Integrated Buck and Boost Converter as a High Efficiency, High-Power-Density Off-Line LED Driver

2020 ◽  
Vol 35 (11) ◽  
pp. 12238-12251
Author(s):  
Guirguis Z. Abdelmessih ◽  
J. Marcos Alonso ◽  
Marco A. Dalla Costa ◽  
Yu-Jen Chen ◽  
Wen-Tien Tsai
Keyword(s):  
Power Density ◽  
High Power ◽  
High Efficiency ◽  
Boost Converter ◽  
High Power Density ◽  
Led Driver ◽  
Fully Integrated
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