A true invisibility cloak would encompass an object, and manipulate light, in a manner such that it traveled around the object, rather than reflecting off it. A recent paper reports some exciting progress toward such a design.
Optics
LiFi: Internet Connection through Light
LiFi is a novel two-way, high-speed wireless technology similar to WiFi but uses light waves instead of radio waves to transmit data.
New Pathways toward Highly Efficient Red LEDs
Highly efficient and spectrally stable red perovskite LEDs developed by researchers at Florida State University.
Roll-to-Roll Fabrication of Transparent Electrodes for Printed Electronics
A roll-to-roll strategy for the production of future wearable photoelectric devices with higher performance and at a lower cost.
Shining a Light on the Nicobar Pigeon
The iridescence of Nicobar pigeon plumage is put under the microscope.
Carbon Nanotube Surfaces as Ultrafast Emitters
Carbon nanotube surfaces as ultrafast electron sources could influence the next generation of attosecond science and light-wave electronics research.
Optic Imaging to Understand the Healing of Diabetic Wounds
A team of North American researchers demonstrated a label-free and more direct way to observe and quantify microvascular and metabolic healing mechanisms, and the biological response to a topical treatment, utilizing a multimodal microscope equipped with OCT and FLIM.
Laser Spectroscopy Diagnoses Freshness and Fertilization of Hen Egg
A team of Chinese researchers used a GASMAS optical spectroscopy technique to study the degree of freshness of unfertilized eggs and to distinguish unfertilized eggs from fertilized eggs.
![Chiral Cellulose Films for Polarization-Based Encryption [Video]](https://www.advancedsciencenews.com/wp-content/uploads/2018/03/adma201705948_ASN_image.png)
Chiral Cellulose Films for Polarization-Based Encryption [Video]
Chiral photonic cellulose films are prepared, and their ability to reflect circularly polarized light (CPL) is explored. The films are promising for novel photonics applications, including polarization-based encryption.
New System for a Cost-Effective and Fully Automated Blood Test
A team of Chinese researchers developed a cost-effective and fully automated blood counting system that can be used by trained and untrained users.
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