Washington, Aug 4 (Xinhua/UNB) -- Scientists in the United States developed a kind of remotely-controlled soft robots that can move to a targeted position and be reconfigured into new shapes, revealing potential applications in biotechnology and aerospace.
The study published on Friday in the journal Science Advances described the soft robots made of a polymer embedded with magnetic iron microparticles, and controlled by light and magnetic fields.
"We can get it to hold a given shape; we can then return the robot to its original shape or further modify its movement; and we can do this repeatedly," said the paper's corresponding author Joe Tracy, professor of materials science and engineering at North Carolina State University.
The researchers used light from a light-emitting diode (LED) to heat up the material that is relatively stiff under normal conditions, and the polymer became pliable. Then, they demonstrated that the robot's shape can be remotely controlled by applying a magnetic field.
After the robot took a desired shape, the researchers removed the LED light, and then the robot resumed the original stiffness, locking the shape in place.
In an experimental test, the researchers used the soft robot as a "grabber" for lifting and transporting objects. Also, it can be folded into "flowers" with petals that bend in different directions.
In addition, the researchers developed a computational model to fine-tune the robot's shape, polymer thickness, and the size and direction of the required magnetic field, which helps make a prototype design to accomplish a specific task.
Now, they are working to engineer polymers that respond at different temperatures in order to meet the needs of specific applications.
Dhaka, Aug 3 (UNB)- Bangladeshi handset maker Walton has launched its first triple camera phone with notch display in local market. The new 4G network supported smartphone ‘Primo S7’ comes in two different colors of Blue and Sea Green and available for purchase at all Walton Plaza, brand and retail outlets across the country,
Asifur Rahman Khan, Chief of Walton Cellular Phone sales department, said that the phone will be available at Tk 14,999 and open for pre-book. Customers who will place their orders will get cashback.
Runs on Android 9.0 Pie operating system, the device features a 6.26-inch 19:9 U-Notch HD+ display with 1520X720 pixel screen resolutions. It sports a 64 bit 2.0 GHz Octa-Core processor, PowerVR Rogue GE8320 GPU, 3GB DDR4 RAM, 32GB internal storage (expandable up to 256 GB) with 3900 mAh battery.
The new device has 12MP+13MP+2MP PDAF AI powered triple camera with LED flash and a set of attractive features along with another 16MP front camera.
Customers will also enjoy instant replacement warranty for 30 days for the phone along with one-year regular service warranty.
Beijing, Aug 3 (Xinhua/UNB)-- Chinese netizens submitted more than 11.93 million leads against harmful information online in July, 58.9 percent lower year on year, the Office of the Central Cyberspace Affairs Commission said Friday.
Among the reports, 2.2 million were submitted to local reporting centers across the country, up 62.3 percent.
China's major websites received 9.6 million leads concerning harmful information, the office said, noting that over 60 percent of them were sent to leading commercial websites including Weibo, Baidu, Tencent and Alibaba.
The office has provided multiple approaches for the public to submit leads against harmful information on the Internet, with an aim to maintain a healthy cyberspace.
Frankfurt, Aug 1 (AP/UNB) — Luxury automaker BMW saw net profit fall 29% to 1.48 billion euros ($1.63 billion) in the second quarter from a year earlier as higher spending to develop new technologies and revamp factories weighed on the bottom line.
The company said Thursday vehicles sales and revenue increased in the April-June period and that it was sticking with its profit forecast for the year.
Sales rose 1.5% to 647,500 vehicles, helped by its BMW Brilliance joint venture in China. Revenues rose 2.9% to 25.7 billion euros ($28.37 billion).
The company spent 1.4 billion euros ($1.5 billion) on research and development in the quarter, and invested 1.2 billion euros ($1.3 billion) in new plants to modernize production and prepare for new models. It also saw higher production costs from an increasing proportion of electric vehicles.