The United States has developed new materials for detecting nuclear radiation that can work at room temperature
From the Chernobyl nuclear accident to the September 11 terrorist attack, and the French nuclear leak from the Fukushima nuclear crisis in Japan to today, nuclear and other dangerous materials will inevitably make people talk. According to a report by the American Physicists Organization Network on September 12, scientists from Northwestern University recently developed a new material that can detect nuclear radiation and can be used to manufacture handheld detection equipment for detecting nuclear weapons and nuclear materials. Related research will be published in the "Advanced Materials" magazine on September 22.
The gamma rays emitted by nuclear materials can be well absorbed by dense materials such as mercury, thallium, selenium, and cesium, and heavy metal materials. Nuclear radiation can be detected by the electronic changes caused by the gamma rays passing through these materials. However, the biggest problem faced by this type of research is that there are many mobile electrons in the heavy metal material itself, and the electronic changes caused when the gamma rays pass through the material cannot be detected.
"It's like having a bucket of water and adding a drop of water to it. This change is negligible." Explains Mercury Kanatdis, a professor of chemistry at the Weinberg School of Arts and Sciences who led the study. A heavy element material that does not have a large number of freely moving electrons. But in nature, this does not exist, so we need to develop a new material. "
Kanatdis and his team have created a new crystal structure of heavy element semiconductor materials, this new material consists of cesium-mercury-sulfide and cesium-mercury-selenide, can work normally at room temperature , Most of the electrons in it are bound together and no longer move freely. When the gamma ray enters a new material, it will activate the electrons, so that the electrons start to move freely, and the gamma rays are detected accordingly. Moreover, since each element has its own unique pattern, these signals can also be used to determine the leaked nuclear material.
Kanatdis said that the new materials are very promising and competitive, and may also be used in biomedicine, such as diagnostic imaging.
Tower desk, also known as a computer tower desk or a desktop tower desk, is a specific type of desk designed to accommodate a computer tower or CPU unit. It provides a dedicated space for the tower, allowing for easy access, organization, and airflow. Here are some key features and aspects of a tower desk:
Tower Compartment: The main feature of a tower desk is a dedicated compartment or shelf designed to house the computer tower. This compartment is typically located either at the bottom or on the side of the desk and is specifically sized to accommodate the dimensions of the tower.
Size and Dimensions: Tower desks come in various sizes and dimensions to accommodate different computer tower sizes and user preferences. Consider the dimensions of your computer tower and the available space in your room or office when selecting a tower desk.
Cable Management: Tower desks often have built-in cable management features to help keep computer cables and cords organized and out of sight. These may include cable routing holes, grommets, or built-in cable trays to prevent clutter and promote a clean and organized workspace.
Storage and Organization: Tower desks may include additional storage options to help keep your workspace organized. These can include drawers, shelves, or compartments for storing computer accessories, office supplies, or other items.
Ergonomics and Workspace: Tower desks are designed with the user's comfort and productivity in mind. They provide a functional workspace that accommodates the placement of a monitor, keyboard, mouse, and other peripherals in an ergonomic arrangement. Consider the height and layout of the desk to ensure a comfortable and efficient working environment.
Material and Construction: Tower desks are made from various materials, including wood, metal, glass, or a combination of these. The choice of material can impact the desk's durability, aesthetics, and weight-bearing capacity. Consider the desired style, sturdiness, and maintenance requirements when selecting the material for the tower desk.
Design and Style: Tower desks come in different designs and styles to match various office aesthetics. They can range from traditional and classic designs to modern and contemporary styles. Consider the overall decor of your office or workspace when selecting the design of the tower desk.
Computer Tower Desk,Pc Tower Desk,Tower Computer Desk,Corner Tower Desks,Computer Tower Storage Desks,Computer Desk with Tower Shelf
Ningbo Greenly Industy Co.,LTD. , https://www.chinagreenly.com