Related Experiment Video
Updated: Jan 24, 2026
09:01
Magnetic-, Acoustic-, and Optical-Triple-Responsive Microbubbles for Magnetic Hyperthermia and Pothotothermal Combination Cancer Therapy
Published on: May 22, 2020
3.5K
Optical response of magnetically actuated biocompatible membranes
H Joisten1, A Truong, S Ponomareva
1Univ. Grenoble Alpes, CEA, CNRS, IRIG-SPINTEC, 38000 Grenoble, France. helene.joisten@cea.fr.
Nanoscale
|May 17, 2019
Summary
Researchers created biocompatible magneto-elastic membranes with magnetic pillars. These membranes act as tunable diffraction gratings, with distinct optical responses in reflection and transmission under magnetic fields, enabling adaptive optics.
Area of Science:
- Materials Science
- Optics
- Nanotechnology
Background:
- Developing advanced materials for tunable optical devices is crucial.
- Magneto-elastic materials offer unique responsive properties.
Purpose of the Study:
- To prepare and characterize biocompatible magneto-elastic membranes.
- To investigate their magnetically tunable optical diffraction properties.
Main Methods:
- Fabrication of polydimethylsiloxane (PDMS) films with embedded magnetic pillars using lithography.
- Optical measurements in transmission and reflection under varying magnetic fields.
- Correlation of optical response with membrane structure and deformation using models.
Main Results:
- The membranes function as magnetically tunable optical diffraction gratings for visible light.
- Diffraction patterns in reflection and transmission exhibit significantly different responses to magnetic fields.
- Reflected beams are sensitive to membrane bending, while transmitted beams remain largely unchanged.
Conclusions:
- Weak membrane deformation can lead to substantial changes in reflected diffraction patterns.
- The field-controlled optical response holds potential for adaptive optics, photonic devices, and biological applications.
More Related Videos
Related Concept Videos
03:02Colors and Magnetism
14.0K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.0K
02:45Responses to Heat and Cold Stress
14.7K
Every organism has an optimum temperature range within which healthy growth and physiological functioning can occur. At the ends of this range, there will be a minimum and maximum temperature that interrupt biological processes.
14.7K
01:30Magnetism
8.4K
Magnets are commonly found in everyday objects, such as toys, hangers, elevators, doorbells, and computer devices. Experimentation on these magnets shows that all magnets have two poles: one is labeled north (N) and the other south (S). Magnetic poles repel if they are alike and attract if unlike. Moreover, both poles of a magnet attract unmagnetized pieces of iron.
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
An individual magnetic pole cannot be isolated. No matter how small, every piece of a magnet contains a north pole and a south...
8.4K
01:21The Resting Membrane Potential
142.0K
Overview
142.0K
01:16Introduction to Membrane Proteins
80.8K
The cell membrane, or plasma membrane, is an ever-changing landscape. It is described as a fluid mosaic where various macromolecules are embedded in the phospholipid bilayer. Among the macromolecules are proteins. The protein content varies across cell types. For example, mitochondrial inner membranes contain ~76% protein content, while myelin contains ~18% protein content. Individual cells contain many types of membrane proteins—red blood cells contain over 50—and different cell...
80.8K
01:24What are Membranes?
18.6K
A cell's plasma membrane demarcates the cell's borders and determines the nature of its interaction with the environment. Cells exclude certain substances, take in others, and excrete some others in controlled quantities. The plasma membrane must be flexible to allow certain cells, such as red and white blood cells, to change their shape while passing through narrow capillaries. These are the more obvious plasma membrane functions. In addition, the plasma membrane's surface carries...
18.6K