Related Experiment Video
Updated: Jan 24, 2026

07:45
Quasi-light Storage for Optical Data Packets
Published on: February 6, 2014
11.3K
3D Janus plasmonic helical nanoapertures for polarization-encrypted data storage.
Yang Chen1, Xiaodong Yang1, Jie Gao1
1Department of Mechanical and Aerospace Engineering, Missouri University of Science and Technology, Rolla, MO 65409 USA.
Light, Science & Applications
|May 18, 2019
Summary
Researchers developed 3D Janus plasmonic helical nanoapertures for advanced optical applications. These structures exhibit direction-controlled polarization sensitivity, enabling novel data storage and optical information processing.
Area of Science:
- Plasmonics
- Nanophotonics
- Optical Chirality
Background:
- Helical structures are recognized for their optical chirality.
- Plasmonic nanostructures offer unique light-matter interaction properties.
Purpose of the Study:
- To develop 3D Janus plasmonic helical nanoapertures with direction-controlled polarization sensitivity.
- To demonstrate novel applications in data storage and optical information processing.
Main Methods:
- Fabrication using one-step grayscale focused ion beam milling.
- Experimental realization of circular dichroism (CD) and linear dichroism (LD) in transmission.
- Encoding Janus metasurfaces with nanoaperture enantiomers for data storage.
Main Results:
- Achieved a circular dichroism of 0.72 in the forward direction.
- Observed a giant linear dichroism of 0.87 in the backward direction.
- Demonstrated direction-controlled polarization-encrypted data storage with distinct images in forward and backward directions.
Conclusions:
- The proposed Janus helical nanoapertures offer a versatile platform for multifunctional polarization control.
- Potential applications include enantiomer sensing, data encryption/decryption, and optical information processing.
Related Concept Videos
Storage
376
A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze...
376
Group Polarization
38.4K
Group polarization is the strengthening of an original group attitude following the discussion of views within a group (Teger & Pruitt, 1967). That is, if a group initially favors a viewpoint, after discussion the group consensus is likely a stronger endorsement of the viewpoint. Conversely, if the group was initially opposed to a viewpoint, group discussion would likely lead to stronger opposition.
38.4K
Molecular Shape and Polarity
74.9K
Dipole Moment of a Molecule
74.9K
Sugars as Energy Storage Molecules
9.8K
Sugar (a simple carbohydrate) metabolism (chemical reactions) is a classic example of the many cellular processes that use and produce energy. Living things consume sugar as a major energy source because sugar molecules have considerable energy stored within their bonds. Consumed carbohydrates have their origins in photosynthesizing organisms like plants. During photosynthesis, plants use the energy of sunlight to convert carbon dioxide gas into sugar molecules, like glucose. Because this...
9.8K
ATP Energy Storage and Release
14.1K
ATP is a highly unstable molecule. Unless quickly used to perform work, ATP spontaneously dissociates into ADP and inorganic phosphate (Pi), and the free energy released during this process is lost as heat. The energy released by ATP hydrolysis is used to perform work inside the cell and depends on a strategy called energy coupling. Cells couple the exergonic reaction of ATP hydrolysis with endergonic reactions, allowing them to proceed.
One example of energy coupling using ATP involves a...
One example of energy coupling using ATP involves a...
14.1K
Fats as Energy Storage Molecules
26.9K
Triglycerides are a form of long-term energy storage molecules. They are made of glycerol and three fatty acids. To obtain energy from fat, triglycerides must first be broken down by hydrolysis into their two principal components, fatty acids and glycerol. This process, called lipolysis, takes place in the cytoplasm. The resulting fatty acids are oxidized by β-oxidation into acetyl-CoA, which is used by the Krebs cycle. The glycerol that is released from triglycerides after lipolysis...
26.9K

