Made of pure copper, the ultra-thin ‘shell’ conceals sensors from remote inspection while still allowing them to probe the exterior environment
A team of researchers from the National University of Singapore (NUS) has invented a novel camouflage technique that effectively hides thermal and electronic sensors without compromising performance. Led by Assistant Professor Qiu Cheng-Wei from the Department of Electrical & Computer Engineering at NUS Faculty of Engineering, the team created the world’s first multifunctional camouflage shell that renders sensors invisible in both thermal and electric environments.
Current technologies which make sensors ‘invisible’ usually also make them ineffective, while others only work in specific physical fields (i.e. either thermal or electrical). Over the past ten months, the NUS team has experimentally demonstrated that they could hide sensors in both thermal and electric fields without them being detected. The invisible sensors are also able to continue to probe on the environment while ‘under cover’.
Asst Prof Qiu explained, “We have designed a camouflage ‘shell’ that not only mimics surrounding thermal fields but also electric fields, both at the same time. The object under camouflage becomes truly invisible as its shape and position cannot be detected in terms of both thermal and electric images.”
In their experiment, they created an ideal invisible sensor by covering it with a thin shell which is made of pure copper. The shell is designed to drastically reduce the perturbation of heat flux and electric current simultaneously. The thickness of the shell is fabricated based on detailed calculations to allow precise manipulation of external multi-physical fields to insulate the sensor and hence render it invisible and yet allows it to receive incoming signals from outside.
“Our camouflaging shell will open up a new avenue for advanced sensing and security systems. Sensors which are used to monitor current and heat flow in strong voltage or high temperature environments are easily damaged. Our camouflaging shell hence protect such sensors from the harsh environment and at the same time enhance the accuracy of the hidden sensor, as the shell will eliminate any distortion around the sensor. This attribute is significant in our study of other applications such as using the camouflaging shell on special mission fieldtrips. The team is also working on developing multifunctional invisible sensors that have instantaneous stealth ability,” added Dr Qiu.
Drawing a comparison with the chameleon, from which the team had drawn inspiration to develop the novel camouflaging shell, Dr Qiu said, “The skin of a chameleon is made up of several layers of specialised cells containing various pigment while the outermost layer is transparent. The cells beneath the skin change colour based on light intensity and temperature as well as the chameleon’s mood. Our team’s invention can be seen as an improved “skin” for the chameleon such that it will become invisible when it appears in front of thermal and electric signal detectors!”
The Latest on: Invisible sensor
via Google News
The Latest on: Invisible sensor
- The Best New Trail Cameras for 2019 on April 18, 2019 at 9:03 am
Most scouting cameras come with an image sensor that functions best during the day ... The 20 megapixel camera runs on 12 AA batteries, features invisible flash technology, and you can program it for ... […]
- Inspecting IC Packages Using Die Sorters on April 18, 2019 at 12:14 am
“For example, a sensor that may be used for autonomous driving requires ... Infrared inspection isn’t new. Invisible to the human eye, infrared wavelengths range between 760nm to 1,000nm. For years, ... […]
- Parrot Unveils Thermal Imaging Drone: ANAFI Thermal on April 17, 2019 at 9:04 pm
The drone utilizes Parrot's highly successful ANAFI drone platform and equips it with a built-in 4K HDR camera with a 21-megapixel Sony sensor, as well as a FLIR ... Images from the visible and ... […]
- ANAFI THERMAL: The ultra-compact and lightweight thermal drone solution on April 17, 2019 at 1:31 pm
In addition to its built-in 4K HDR camera, ANAFI Thermal integrates a FLIR® thermal sensor. With the ability to reveal the invisible in an instant, the FLIR® sensor is a benchmark feature in the ... […]
- Optics and lighting design crucial for machine vision applications on April 17, 2019 at 12:22 am
Sensor selection is highly dependent on the end-application ... The way a particular material absorbs or reflects a specific wavelength can also highlight defects that are invisible under broadband ... […]
- Stamping out wildfires requires invisible infrastructure on April 16, 2019 at 4:30 pm
This broadband spectrum is the ideal workhorse of the invisible infrastructure underlying ... other funding sources for fire cameras, weather sensors and the underlying communications systems ... […]
- Electromechanical sensor could facilitate real-time wound monitoring on April 16, 2019 at 5:11 am
It has gold sensor cables that can mirror skin elasticity and is allegedly ... sensing system is capable of determining critical biochemical events while being invisible to the biological system or ... […]
- Swedish researchers develop ground-breaking hydrogen sensor on April 15, 2019 at 2:04 am
The new sensor changes color when there is a change in the amount ... is ground-breaking because detecting hydrogen is challenging in multiple ways. The gas is invisible, has no smell but can be ... […]
- World’s Fastest Hydrogen Sensor Could Pave Way For Clean Hydrogen Energy on April 11, 2019 at 8:34 pm
The sensor works based on an optical phenomenon – a plasmon ... Detecting hydrogen is challenging in many ways. The gas is invisible and odourless, but volatile and extremely flammable. It requires ... […]
- This sensor could accelerate development of hydrogen-fueled vehicles on April 11, 2019 at 12:01 pm
Researchers said that the sensor can work both highly efficiently and undisturbed, enabling it to detect 0.1% hydrogen in the air in less than a second. Hydrogen gas is invisible and odorless, but ... […]
via Bing News