Technology

Next gen meta surface possibly coming to flat screens in 10 years

Published

2 years ago

February 25, 2023

Next gen meta surface possibly coming to flat screens in 10 years

A research team from Nottingham Trent University in the UK, the Australian National University, and the University of New South Wales in Canberra have developed an experimental display technology that could replace the LCD panels used in many of today’s widescreen televisions.

Table of Contents

How meta surface works.

While some modern high-end TVs may have quantum dot screens or OLED ( Organic Light Emitting Diode ) panels, many of the cheapest models available will use LCD (liquid crystal display) technology, polarizing filters, and LED ( Light Emitting Diode) backlights. But the researchers say the limit has been reached for the development of this type of technology. The team has developed electrically tunable arrays of nanoparticles called “metasurfaces” that may perform better and offer many advantages over LCD ( Liquid-Crystal Display) and LED (Light-emitting Diode) displays. For example, metasurfaces are 100 times thinner than liquid crystal cells, have “10 times” higher resolution, and consume 50 percent less power.

Which is the most important metrics of flat panel

“The most important metrics of flat panel displays are pixel size and resolution, weight, and power consumption. We have addressed each of these with our meta-display concept,” said lead researcher Mohsen Rahmani, a professor of engineering at Nottingham Trent University. The technology significantly reduces energy consumption
The researchers believe that the most significant benefit of their technology is the significant reduction in power consumption. “This is excellent news given the number of monitors and TV sets being used in households and businesses every single day. We believe it is time for LCD and LED displays to be phased out in the same way as former CRT ( Cathode Ray Tube) TVs over the past ten to 20 years,” said Rahmani.

The experimental platform uses a transparent conductive oxide

To drive individual pixels at a high modulation rate, the experimental platform uses a transparent conductive oxide that serves as an electrically driven heater that can rapidly change the optical properties of silicon metal surface cells, which are reported to be 100 times thinner. than liquid crystal cells or 200 times thinner than human hair. The technology provides sub-millisecond response times, 10 times faster than the detection limit of the human eye.

“Our pixels are made of silicon, which offers a long life span in contrast with organic materials required for other existing alternatives. Moreover, silicon is widely available, CMOS ( complementary metal oxide semiconductor) compatible with mature technology, and cheap to produce,” Professor Andrey Miro Shevchenko, a lead researcher in the Nanophotonics team at UNSW ( University of New South Wales ) Canberra, stated.

Does this use for dynamic virtual reality holography

This technology can also be used for dynamic virtual reality holography in LiDAR (Light Detection and Ranging) technologies and to produce thinner flat panels with 100 times higher resolution than current LCD-based displays, while cutting power consumption in half.

Furthermore, since a variety of metasurfaces can effectively replace the liquid crystal layer in modern displays, the researchers believe that manufacturers will not need to invest in new production lines to produce panels. The project will now focus on scaling the technology for big-screen TVs, as well as further improving the performance of metasurfaces using AI and machine learning.

Research summary:

In recent decades, metasurfaces have attracted a lot of attention due to their extraordinary light-scattering properties. However, its inherently static geometry is an obstacle for many applications where dynamic adjustment of its optical characteristics is required. Research is currently underway to dynamically tune the properties of the metasurface, especially with high tuning speed, large modulation by weak electrical signals, solid state, and the ability to program multiple pixels. Here we demonstrate electrically tunable metasurfaces controlled by the thermo-optic effect and flash heating on silicon.

How many changes in transmission at a bias voltage

We show a 9-fold change in transmission at a bias voltage of <5 V and a modulation rise time of <625 µs. Our device consists of a silicon hole array meta surface encapsulated with a transparent conductive oxide as a localized heater. This allows for optical switching of the video frame rate at various pixels that can be programmed electrically. Some of the advantages of the proposed tuning method over other methods are that it can be used for modulation in the visible and near-infrared, has great depth of modulation, operates in transmit mode, has a low optical loss, has low input voltage requirement, and it operates at a switching level. speed higher than video speed.

The device is also compatible with modern electronic display technologies and can be ideal for personal electronic devices such as flat panel displays, virtual reality holography, and light-sensing and ranging where fast, solid-state, and transparent optical switches are required.

Technology

Powerful Strategies: Top 10 Tips to Drastically Reduce Your Home Electricity Bills

Published

11 months ago

December 24, 2023

Irfa Imran

Top 10 Tips to Drastically Reduce Your Home Electricity Bills

In today’s world, where the cost of living continues to rise, finding effective ways to reduce electricity bills has become a pressing concern for many households. This article presents a comprehensive guide with the top 10 strategies to not only cut down on energy costs but also promote a more sustainable and eco-friendly lifestyle. Let’s delve into these powerful tips that can lead to significant savings and contribute to a greener planet.

1. Conduct a Comprehensive Home Energy Audit:
The first step towards reducing electricity bills is to understand your home’s energy consumption. To begin with, perform a thorough energy audit, identifying areas of improvement such as energy-draining appliances, insulation issues, and potential drafts. Online tools and professional audits can provide valuable insights into your energy usage patterns.

2. Upgrade to Smart Thermostats:
Investing in a smart thermostat is a game-changer for energy efficiency. These devices learn your heating and cooling preferences, adjusting the temperature based on your habits. Consequently, this not only enhances comfort but also leads to substantial energy savings over time.

3. Embrace Energy-Efficient Appliances:
Replace outdated appliances with ENERGY STAR-rated models. These appliances are specifically designed to consume less energy while maintaining optimal functionality. From refrigerators to washing machines, upgrading to energy-efficient options significantly contributes to reducing electricity bills.

4. Unplug Devices When Not in Use:
Combat phantom energy consumption by regularly unplugging devices and chargers when they’re not actively in use. Even in standby mode, electronic devices continue to draw power, contributing to unnecessary energy expenditure.

5. Switch to LED Bulbs:
Make the transition to LED or CFL bulbs. These energy-efficient alternatives not only consume less energy but also have a longer lifespan, thereby reducing the frequency of replacements. Consequently, switching to LED lighting is a simple yet impactful step towards lowering your electricity bills.

6. Seal Leaks and Optimize Insulation:
Addressing drafts and optimizing insulation in your home is crucial for regulating indoor temperatures. Sealing leaks around windows and doors prevent heat loss or gain, thus reducing the strain on heating and cooling systems and leading to substantial energy savings.

7. Regular HVAC Maintenance:
Schedule regular maintenance for your Heating, Ventilation, and Air Conditioning (HVAC) system. Cleaning or replacing filters, addressing leaks promptly, and ensuring optimal efficiency can significantly contribute to reducing electricity bills.

8. Invest in Solar Power:
Explore the possibility of installing solar panels on your property. While the initial investment may be substantial, solar panels harness the power of the sun, providing a clean and renewable energy source that can lead to long-term savings.

9. Leverage Wind Energy Options:
In regions with favorable wind conditions, consider harnessing wind energy through small-scale wind turbines or community wind projects. Wind power adds another dimension to your efforts to reduce electricity bills while embracing renewable energy.

10. Take Advantage of Financial Incentives:
Many utility companies offer rebates or discounts for customers who invest in energy-efficient technologies. Additionally, government programs and tax credits may further offset the initial costs of implementing these strategies, making it a financially savvy decision.

Conclusion:
Reducing electricity bills is not only about saving money but also about adopting a more sustainable and responsible lifestyle. By incorporating these top 10 strategies into your daily routine, you can make a significant impact on your energy consumption and costs. Start implementing these powerful tips today and embark on a journey towards a more energy-efficient and eco-friendly home.

Technology

Slash Your Electric Bill by 90% with This Simple Trick

Published

11 months ago

December 24, 2023

Irfa Imran

Slash Your Electric Bill by 90% with This Simple Trick

Introduction:
In today’s landscape of escalating energy costs and environmental concerns, finding effective ways to reduce electric bills is a top priority for many households. This comprehensive guide unveils a revolutionary method, a single trick capable of potentially slashing your electric bill by an impressive 90%. Let’s delve into the details of this energy-saving secret and learn how to implement it for maximum efficiency in your daily life.

Understanding the Current Energy Landscape:
Before exploring the trick, it’s crucial to comprehend the current energy landscape. With electricity costs on the rise and a growing emphasis on environmental sustainability, individuals seek sustainable and cost-effective solutions. The 1 simple trick we are about to unveil not only addresses these concerns but also offers a practical and accessible approach suitable for everyone.

The Power of Smart Home Automation:
The key to a substantial reduction in your electric bill lies in embracing smart home automation. This innovative technology allows you to control and optimize your home’s energy usage effortlessly. By integrating smart devices and systems, you gain the ability to monitor, manage, and adjust your energy consumption in real-time.

Smart Thermostats: A Game-Changer for Energy Efficiency:
One of the most impactful components of the 1 simple trick is the adoption of a smart thermostat. Traditional thermostats often lead to energy wastage, operating on fixed schedules and heating or cooling empty spaces. Smart thermostats, on the other hand, learn from your habits, adjusting temperature settings based on your preferences and presence. This not only enhances comfort but also significantly reduces energy consumption.

The Role of Energy-Efficient Appliances:
In conjunction with smart thermostats, upgrading to energy-efficient appliances amplifies the effectiveness of the trick. Modern appliances, designed with energy-saving features, consume significantly less electricity without compromising performance. We’ll explore the top-rated energy-efficient appliances that complement the smart home automation approach, providing you with a comprehensive strategy to cut your electric bill.

Harnessing Solar Power for Sustainable Savings:
To achieve the full potential of the 1 simple trick, consider incorporating solar power into your home. Solar panels capture the sun’s energy and convert it into electricity, offering a clean and renewable energy source. Advances in solar technology have made it more accessible and affordable for homeowners, contributing to long-term energy savings and environmental benefits.

The Financial Incentives of Energy Efficiency:
Beyond the immediate reduction in your electric bill, embracing energy efficiency and smart home automation often comes with financial incentives. Many utility companies offer rebates or discounts for customers who invest in energy-efficient technologies. Additionally, government programs and tax credits may further offset the initial costs of implementing the 1 simple trick, making it a financially savvy decision.

Practical Steps to Implement the Trick:
To implement this 1 simple trick effectively, we’ll guide you through the practical steps involved, from selecting the right smart thermostat to choosing energy-efficient appliances and exploring solar options. With easy-to-follow instructions, you can embark on the journey to cut your electric bill without compromising your lifestyle.

Conclusion:
In conclusion, the 1 simple trick to cut your electric bill by 90% is rooted in the power of smart home automation, energy-efficient appliances, and harnessing solar energy. By adopting these practices, you not only enjoy immediate savings but also contribute to a more sustainable and eco-friendly future. Explore the possibilities, empower your home with technology, and witness the transformative impact on your energy consumption and costs.

Technology

What is a VPN | How VPNs Work

Published

11 months ago

December 13, 2023

Irfa Imran

In the ever-evolving landscape of the digital age, online privacy and security have become paramount concerns for individuals and businesses alike. Virtual Private Networks, commonly known as VPNs, play a crucial role in safeguarding our online activities by creating a secure and private connection over the Internet. This article aims to provide a comprehensive understanding of VPNs, their functionalities, and a step-by-step guide on how to use them effectively.

Table of Contents

1. What is a VPN?

A. Definition and Purpose:

A Virtual Private Network (VPN) is a technology that establishes a secure and encrypted connection over the internet, allowing users to access resources, browse the web, and communicate while maintaining privacy and security. The primary purpose of a VPN is to create a private network over a public one, ensuring that sensitive data remains confidential and protected from potential threats.

B. How VPNs Work:

VPNs operate by encrypting data traffic between the user’s device and the VPN server, preventing unauthorized access and interception. This encryption process utilizes various protocols, such as OpenVPN, L2TP/IPsec, and IKEv2/IPsec, each offering different levels of security and performance.

2. Why Use a VPN?

A. Privacy Protection:
One of the main reasons individuals and organizations use VPNs is to enhance privacy. By masking the user’s IP address, VPNs prevent third parties, including ISPs (Internet Service Providers) and hackers, from monitoring online activities. This is particularly important when using public Wi-Fi networks, where the risk of data interception is higher.

B. Security Enhancement:
VPNs add an extra layer of security by encrypting data, making it challenging for cybercriminals to decipher and exploit. This is crucial for safeguarding sensitive information, such as login credentials, financial transactions, and business communications.

C. Bypassing Geo-restrictions:

VPN services allow users to access content that may be restricted based on geographical location. By connecting to a server in a different region, users can bypass geo-restrictions and access websites, streaming services, or online content that might otherwise be unavailable.

3. How to Use a VPN

A. Choosing a VPN Service:
Before using a VPN, it’s essential to select a reliable and reputable VPN service provider. Factors to consider include the provider’s privacy policy, server locations, encryption protocols, and user reviews. Popular VPN services include ExpressVPN, NordVPN, and CyberGhost.

B. Installing and Configuring the VPN:

1. Download and Install the VPN Client:
After selecting a VPN provider, visit their website to download the appropriate client for your device and operating system. Most VPN services support various platforms, including Windows, macOS, iOS, and Android.

2. Create an Account:
To use the VPN service, you’ll need to create an account on the provider’s website. This account will often require a username, password, and sometimes payment information for premium services.

3. Configure VPN Settings:
Once the client is installed, launch the application and log in with your credentials. Configure the VPN settings based on your preferences, such as choosing a server location, selecting the desired encryption protocol, and enabling features like a kill switch for added security.

C. Connecting and Disconnecting:

1. Select a Server:
Choose a server location from the available options provided by the VPN service. The server location can impact your internet speed and the ability to access region-specific content.

2. Connect to the VPN:
Click the “Connect” button within the VPN client to establish a secure connection to the chosen server. Once connected, your IP address will be masked, and your internet traffic will be encrypted.

3. Disconnect from the VPN:
When you’re done using the VPN, simply click the “Disconnect” button within the VPN client to revert to your regular internet connection.

4. Tips for Using VPNs Effectively

A. Regularly Update the VPN Client:
To ensure optimal security and performance, keep the VPN client up to date by installing updates and patches released by the provider.

B. Choose the Right Server:
Selecting the appropriate server location is crucial for achieving the desired online experience. If privacy is your main concern, connect to a server in a privacy-friendly jurisdiction.

C. Understand Limitations:
While VPNs offer increased privacy and security, they may not make you completely anonymous online. Be aware of the limitations and use additional security measures as needed.

Conclusion:

In conclusion, Virtual Private Networks are powerful tools that empower individuals and organizations to secure their online activities, protect sensitive information, and bypass geo-restrictions. By understanding what VPNs are, why they are essential, and how to use them effectively, users can take control of their online privacy and enjoy a safer and more secure digital experience. As technology continues to advance, the role of VPNs in safeguarding our online world is likely to become even more crucial.