Holographic recording in a photopolymer by optically induced detachment of chromophores

Steckman, Gregory J.; Шелковников, В. В.; Berezhnaya, V. N.; Gerasimova, T. N.; Solomatine, Iouri

doi:10.1364/ol.25.000607

Cited by 42 publications

(17 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This technique integrates readily available equipment (an optical microscope and a CCD camera) with inexpensive optical components (an array of microlenses and a transmission grating) into a single system that extends the applicability of microsystems. It provides a practical capability to the rapidly growing field of microanalysis, including microfluidic applications, microarray and high-throughput experiments, and analysis of samples with microscale optical variations [such as patterned surfaces of biological molecules (27), thin films of polymers (29), liquid crystals (30), metals, and semiconductors]. By dispersing wavelengths reproducibly, it allows an inexpensive black-and-white CCD focal plane array to provide information at multiple wavelengths, and at multiple locations, in a single image.…”

Section: Discussionmentioning

confidence: 99%

Space- and time-resolved spectrophotometry in microsystems

Damean

Sia

Linder

et al. 2005

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

This work describes a simple optical method for obtaining, in a single still-capture image, the continuous absorbance spectra of samples at multiple locations of microsystems. This technique uses an unmodified bright-field microscope, an array of microlenses, and a diffraction grating to disperse the light transmitted by samples of 10-to 500-m dimensions. By analyzing in a single image the first-order diffracted light, it is possible to collect the full and continuous absorbance spectra of samples at multiple locations (to a spatial resolution of Ϸ8 m) in microwells and microchannels to examine dynamic chemical events (to a time resolution of <10 ms). This article also discusses the optical basis of this method. The simultaneous resolution of wavelength, time, and space at a scale <10 m provides additional capabilities for chemical and biological analysis.poly(dimethylsiloxane) ͉ array of microlenses ͉ spectrophotometer ͉ image processing T his article describes an optical method that resolves wavelength, time, and location simultaneously for samples in microsystems. This technique, which we call micropattern spectrophotometry (PS), analyzes a continuous spectrum of wavelengths (with best performance, in the system described here, in the range of 450 to 700 nm) at multiple positions in the field of view of a microscope. This procedure provides a flexible method for analyzing the composition of samples at a number of points, or in a number of samples, simultaneously and continuously.Microsystems are now ubiquitous in chemistry and biology (1). Applications include analysis of chemical reactions (2), sorting of cells (3), and high-throughput screening (4). Because these systems often require separation (5), mixing (6, 7), and reaction (8) of components with distinct optical profiles, they would benefit from a method that allows the components to be characterized optically in space and time. Advances in miniaturization of components used in spectrophotometric systems have produced a number of useful microsystems: these systems typically work at a single wavelength at any one time (9, 10) or perform measurements at a single spatial location (11-15), and most cannot be easily interfaced with microfluidic systems (16-18). Miniaturized systems for integrating microspectrometers and microfluidics have been proposed but not demonstrated (19,20). Although fiber optic-based microspectrophotometers (21) have been described and microscope-based spectrophotometers (22) are available, they are capable of analyzing only one or only a few samples at a time, and they scan the spectrum one wavelength at a time. Also, they require alignment of a fiber optic cable to the sample region.The method described here collects spectral information at many wavelengths and for many samples simultaneously. Materials and MethodsSetup of the Micropattern Spectrophotometer. We fabricated an array of microlenses in an opaque background by reflowing photoresist (with an index of refraction of 1.59) followed by electroplating of nickel around the mi...

show abstract

Section: Discussionmentioning

confidence: 99%

Space- and time-resolved spectrophotometry in microsystems

Damean

Sia

Linder

et al. 2005

Proc. Natl. Acad. Sci. U.S.A.

View full text Add to dashboard Cite

show abstract

“…[1±4] Generally, the chromophore used is either doped in a polymer matrix [3,4] or covalently bounded to the polymer. [1,2] Azobenzene-containing polymers are among the most studied photoactive polymers.…”

Section: Introductionmentioning

confidence: 99%

Holographic Recording in a Photoactive Elastomer

Zhao¹,

Bai

Asatryan

et al. 2003

Adv Funct Materials

View full text Add to dashboard Cite

This work explores the use of photoactive elastomers as elastic holographic materials. Holographic gratings were recorded on stretched films of an azobenzene elastomer, which is composed of a side‐chain liquid‐crystalline polymer with azobenzene mesogens, grafted to the rubbery polybutadiene block of a styrene–butadiene–styrene (SBS) triblock copolymer. The grating‐formation dynamics measurements revealed the formation of two gratings of different natures resulting from the coupled mechanical and optical effects. A first grating, formed quickly upon exposure, is due to the photoisomerization of oriented azobenzene groups. A second grating, developed at longer exposure times, may originate from changes in the anisotropic structure of the SBS matrix, which is induced by the photochemical phase transition of azobenzene mesogens. The first grating is unstable, but the second grating remains in relaxed films. Both mechanisms can be enhanced by deformation of the film.

show abstract

“…NQ/PMMA-Systeme absorbieren zwischen 488 und 530 nm und bieten eine höhere Indexmodulation als PQ/ PMMA. [68,69] …”

Section: Polymethylmethacrylat-formulierungen -Ein Spezialfallunclassified

Von der Fläche ins Volumen – Materialkonzepte für optisch‐holographische Datenspeicher der Zukunft

et al. 2011

View full text Add to dashboard Cite

Die optische Datenspeicherung hat seit Ihrer Markteinführung 1982 das tägliche Leben geprägt. Compact Disk (CD), Digital Versatile Disk (DVD) und Blu‐ray Disk (BD) sind universelle Datenträgerformate mit den Vorteilen des kontaktfreien und damit abnutzungslosen Lesens und Schreibens der digitalen Daten. Sie ermöglichen einen schnellen Datenzugriff, hohe Transferraten und eine stromfreie Datenspeicherung bei sehr günstigen gesamten Archivierungskosten. Der stete Wunsch nach der Erhöhung der Datenspeicherkapazitäten und ‐transferraten treibt die Entwicklung an. Für optische Datenspeicher ist die Nutzung holographischer Prinzipien ein eleganter Weg, diese Parameter weiter zu erhöhen, da hier im Inneren (also im Volumen) des Speichermaterials Daten abgelegt werden und zudem optisch parallel verarbeitet werden können. Dieser Aufsatz beschreibt die grundlegenden Materialanforderungen für holographische Speicher und vergleicht generelle Materialkonzepte. Ein Überblick über aktuelle Demonstrationen von Lese‐Schreib‐Geräten zeigt auf, wie weit die holographische Datenspeicherung schon entwickelt wurde.

show abstract

Holographic recording in a photopolymer by optically induced detachment of chromophores

Cited by 42 publications

References 6 publications

Space- and time-resolved spectrophotometry in microsystems

Space- and time-resolved spectrophotometry in microsystems

Holographic Recording in a Photoactive Elastomer

Von der Fläche ins Volumen – Materialkonzepte für optisch‐holographische Datenspeicher der Zukunft

Contact Info

Product

Resources

About