Inkjet printing graphene for electrical components
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The document discusses the benefits of exercise for mental health. Regular physical activity can help reduce anxiety and depression and improve mood and cognitive functioning. Exercise causes chemical changes in the brain that may help protect against developing mental illness and improve symptoms for those who already have a condition.
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This document presents information on wireless charging technology. It discusses how wireless charging uses electromagnetic fields to transfer energy between two objects, such as a charging station and electrical device, through inductive coupling. The document provides a brief history of wireless power transmission, including Nikola Tesla proposing the concept in 1890 and MIT researchers powering a light bulb in 2007. It describes how wireless systems use inductive coupling between planar coils to transfer power from a transmitter to receiver. The document notes that wireless power systems are evolving to allow for more convenient charging of smartphones and other mobile devices without needing separate chargers.
Temperature-dependent electrical properties of Inkjet-printed Graphene
This document summarizes research on inkjet printing graphene electrodes onto flexible substrates and characterizing their electrical and optical properties. Key findings include:
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2) Optimizing the spacing between ink droplets and number of printed layers allowed tailoring the sheet resistance between 0.3-0.5 MΩ/□ and optical transparency as high as 86%.
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This document presents information on wireless charging technology. It discusses how wireless charging uses electromagnetic fields to transfer energy between two objects, such as a charging station and electrical device, through inductive coupling. The document provides a brief history of wireless power transmission, including Nikola Tesla proposing the concept in 1890 and MIT researchers powering a light bulb in 2007. It describes how wireless systems use inductive coupling between planar coils to transfer power from a transmitter to receiver. The document notes that wireless power systems are evolving to allow for more convenient charging of smartphones and other mobile devices without needing separate chargers.
Temperature-dependent electrical properties of Inkjet-printed Graphene
This document summarizes research on inkjet printing graphene electrodes onto flexible substrates and characterizing their electrical and optical properties. Key findings include:
1) Graphene oxide sheets dispersed in water were inkjet printed onto substrates like PET and reduced using an infrared lamp at 200°C to form conductive graphene patterns.
2) Optimizing the spacing between ink droplets and number of printed layers allowed tailoring the sheet resistance between 0.3-0.5 MΩ/□ and optical transparency as high as 86%.
3) The printed graphene electrodes exhibited properties of a negative temperature coefficient material, with electrical resistance rapidly decreasing with temperature increases.
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The document summarizes research on inkjet-printed graphene for flexible micro-supercapacitors. Graphene is an ideal electrode material due to its high surface area, conductivity, and stability. The researchers used graphene oxide ink that was reduced to graphene after printing. Printed graphene films were highly porous with a surface area of 282 m2/g. Electrochemical testing showed the printed graphene achieved a capacitance of 132 F/g and could be charged and discharged rapidly while retaining 97% of its capacitance over many cycles. The research demonstrated inkjet printing as a scalable method for producing graphene-based flexible micro-supercapacitors.
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This document summarizes research on inkjet printing graphene electrodes for flexible micro-supercapacitors. Key points:
- Graphene oxide dispersed in water was found to be a stable ink for inkjet printing graphene electrodes with 50 μm resolution. Thermal reduction produced conductive graphene.
- Initial electrochemical tests showed specific capacitance of 48-132 F/g and energy density of 6.74 Wh/kg, comparable to other graphene electrodes. Power density was lower at 2.19 kW/kg.
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The document describes a recent bad customer experience with Celcom mobile service and a good customer experience with Air Asia airline.
The bad Celcom experience involved being forced into a postpaid plan and then being threatened with blacklisting for deferred payments. The individual complained to friends and said they would not use or recommend Celcom again.
A good Air Asia experience involved lost luggage being efficiently handled, with the customer service representative addressing the problem calmly. The individual was satisfied and would use and recommend Air Asia again due to their good customer service and relations management.
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The document provides an overview of the Vietnam economy including its population, economic sectors, labor market, GDP growth, inflation, international trade, government budget, interest rates, and lending rates. It notes that Vietnam has a population of around 8.5 billion people concentrated in major urban areas. The economy has primary, secondary, and tertiary sectors and the unemployment rate was last reported at 4.3% in 2012.
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The document summarizes a prototype for a BatteryX device created by Linh T. Le and Louis Ting, with mentor Don Green. It describes the prototype, its differentiators from other technologies, and how it applies feedback on a working prototype. The prototype utilizes graphene for its electrically conductive, optically transparent, and mechanically strong properties to allow for increased performance and reduced costs for flexible energy storage and generation devices.
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IEEE Nano 2011 micro-supercapacitor
The document summarizes research on inkjet-printed graphene for flexible micro-supercapacitors. Graphene is an ideal electrode material due to its high surface area, conductivity, and stability. The researchers used graphene oxide ink that was reduced to graphene after printing. Printed graphene films were highly porous with a surface area of 282 m2/g. Electrochemical testing showed the printed graphene achieved a capacitance of 132 F/g and could be charged and discharged rapidly while retaining 97% of its capacitance over many cycles. The research demonstrated inkjet printing as a scalable method for producing graphene-based flexible micro-supercapacitors.
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Innovative batteryX slidedecks
The document outlines a business plan for a graphene-based flexible battery called BatteryX. It describes the technical approach using graphene electrodes and highlights improved performance over thin film batteries. The plan discusses key partnerships, activities, resources and revenue streams such as licensing the intellectual property, selling customized batteries, and selling home-use products. Market segments are flexible electronics industries and home consumers. The overall goal is to scale production from R&D to industrial manufacturing levels.
Graphene based supercapacitor
This document discusses a new method for fabricating graphene electrodes for supercapacitors using inkjet printing and thermal reduction of graphene oxide. Graphene oxide dispersed in water was inkjet printed onto titanium foil substrates and then thermally reduced at 200°C in nitrogen gas. The resulting graphene electrodes, called inkjet printed graphene electrodes (IPGEs), showed specific capacitances ranging from 48 to 132 F/g depending on the scan rate, comparable to other graphene electrode fabrication methods. This new process allows for designing interdigitated electrode arrays with high spatial resolution for flexible micro-supercapacitors.
Micro-Supercapacitor
This document summarizes research on inkjet printing graphene electrodes for flexible micro-supercapacitors. Key points:
- Graphene oxide dispersed in water was found to be a stable ink for inkjet printing graphene electrodes with 50 μm resolution. Thermal reduction produced conductive graphene.
- Initial electrochemical tests showed specific capacitance of 48-132 F/g and energy density of 6.74 Wh/kg, comparable to other graphene electrodes. Power density was lower at 2.19 kW/kg.
- Current work aims to increase capacitance by controlling graphene stacking and morphology, and integrate printed electrodes into micro-supercapacitor devices for flexible electronics applications.
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This document outlines Malaysia's national integrity plan. It discusses key concepts like realizing Vision 2020 and creating ethical citizens. It was launched by the prime minister. The plan aims to reduce corruption and fraud while improving public services, corporate governance, families, and society's welfare. It analyzes factors affecting integrity like individuals, leadership, systems, institutions, and culture. Performance targets include reducing symptoms of corruption and improving services. Strategies focus on implementing integrity in families, communities, civil society, social institutions, religion, economics, and politics. The overall goal is to achieve the objectives and targets of the national integrity plan.
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