Results 51 to 60 of about 233 (148)

Optical Detection of Volatile Organic Compounds: A Review of Methods and Functionalized Sensing Materials

Advanced Optical Materials, Volume 13, Issue 27, September 23, 2025.
The focus on volatile organic compounds (VOCs) detection is dictated by the increasing awareness of their impact on human health. In addition, VOCs are increasingly considered novel for early diagnosis of diseases. Among various types of VOC sensor devices, optical detectors play an essential role, offering excellent versatility, fast response time ...
Aleksandra Hernik, Jorid Smets, Zhe Wang, Yuliya Semenova, Jin‐Chong Tan, Rob Ameloot, Izabela Naydenova   +6 more
wiley   +1 more source

Inscription of local surface relief gratings with a Scanning Near-field Optical Microscope on an azo-polymer film

Polímeros, 2006
A Scanning Near-field Optical Microscope (SNOM) was used to inscribe locally limited Surface Relief Gratings (SRGs) on pDR1M, which is an azo-polymer film.
Ivan H. Bechtold, Burkhard Stiller, Ludwig Brehmer, Elisabeth A. de Oliveira   +3 more
doaj   +1 more source

Polarization‐Driven Molecular Alignment of Azopolymer for Dual‐Encrypted and Moiré Animation‐Based Anti‐Counterfeiting

Advanced Functional Materials, Volume 35, Issue 31, August 1, 2025.
A multi‐layered anti‐counterfeiting platform is developed based on an azopolymer (PAzo) system. By leveraging the molecular orientation control of PAzo under linearly polarized light (LPL), encrypted patterns are fabricated that remain invisible under standard conditions and require polarized optical microscopy (POM) for decryption.
Ming‐Hsuan Chang, Yi‐Chung Dzeng, Yi‐Ren Chen, Chun‐Chi Chang, Lin‐Ruei Lee, Tsung‐Hung Tsai, Yi‐Fan Chen, Yu‐Chun Liu, Teruki Sugiyama, Chi Chen, Jiun‐Tai Chen   +10 more
wiley   +1 more source

Large‐Area Photomodification of Nanotopography for Controlling Cell Behavior

Advanced Materials Interfaces
Nanotopographic surfaces are a powerful tool for studying and controlling cell behavior. However, the fabrication of nanotopographic master patterns using conventional photolithography is expensive, which limits the range of designs that can be explored.
Mona H. Abdelrahman, Nikolaos Liaros, Matt J. Hourwitz, Jerry Shen, Sandra A. Gutierrez Razo, Wolfgang Losert, John T. Fourkas   +6 more
doaj   +1 more source

Spatio‐Spectral Customized Light Structures for Subwavelength Highly Resolved Multiplexing of Diffractive Optics

Laser &Photonics Reviews, Volume 19, Issue 12, June 18, 2025.
Polarization standing waves (PSWs) created by broadband counter‐propagating light beams offer a flexible and efficient method for encoding complex and customizable structures in photosensitive materials with finely tunable periodicities and nanometric resolution.
Biagio Audia, Pasquale Pagliusi, Alfredo Mazzulla, Gabriella Cipparrone   +3 more
wiley   +1 more source

Multi‐Color Optical Quasiparticle Laser Source Formed of a Pr3+ Doped Fiber Laser with a Dual‐Output Coupling Geometry

Laser &Photonics Reviews, Volume 19, Issue 4, February 19, 2025.
Multicolor visible optical quasiparticles (bimerons and skyrmions) source is demonstrated by employing a diode‐pumped Pr3+‐doped fluoro‐aluminate glass (Pr3+: WPFG) fiber laser with a wedge‐output coupler. This robust and cost‐saving system explores potentially innovative applications in materials science and biotechnologies. Abstract The generation of
Yuto Yoneda, Srinivasa Rao Allam, William R. Kerridge‐Johns, Yasushi Fujimoto, Takashige Omatsu   +4 more
wiley   +1 more source

Reversible Demountable Coating Films Composed of Trifunctional Liquid Anthracene Compounds and Evaluation of Their Adhesive Properties

Macromolecular Chemistry and Physics, Volume 226, Issue 4, February 2025.
For various adherends, a light‐cured film of a trifunctional liquid anthracene compound is used as a primer layer prior to adhesion. This provides a thermally dismantlable adhesive bond. Abstract Technologies that facilitate recycling are attracting considerable interest from the perspective of resource constraints.
Haruhisa Akiyama, Tamaki Fukada, Yoko Matsuzawa, Kouki Akaike   +3 more
wiley   +1 more source

Determination of the Glass Transition Temperature of Freestanding and Supported Azo-Polymer Thin Films by Thermal Assisted Atomic Force Microscopy

EPJ Web of Conferences, 2017
In this paper we introduce and apply the method for determination of the glass transition temperature of the sub-100 nm thick freestanding and supported polymer films based on thermally assisted atomic force microscopy (AFM). In proposed approach changes
Chernykh Elena, Kharintsev Sergey, Fishman Alexandr, Alekseev Alexander, Salakhov Myakzuym   +4 more
doaj   +1 more source

Photoinduced birefringence in azopolymer doped with Au nanoparticles

Journal of Physics: Conference Series, 2019
Abstract A study of the photoinduced birefringence in nanocomposite thin films of the azopolymer PAZO (poly[1-[4-(3-carboxy-4-hydroxyphenylazo)benzenesulfonamido]-1,2-ethanediyl, sodium salt]) doped with gold (Au) nanoparticles (NPs) is presented. The NPs are with a spherical shape and mean size 10 nm.
Nazarova D., Nedelchev L., Stoykova E., Blagoeva B., Mateev G., Karashanova D., Georgieva B., Kostadinova D.   +7 more
openaire   +2 more sources

Femtosecond optical vortex-induced flower-shaped surface relief structures in an azo-polymer film

APL Photonics
We study the formation of surface relief structures in azo-polymers generated via two-photon induced photoisomerization using a femtosecond near-infrared optical vortex laser beam.
Kana Ishihara, Takashige Omatsu
doaj   +1 more source