Polymer microcantilevers fabricated via multiphoton absorption polymerization

Bayindir, Z.; Sun, Yang; Naughton, Michael; LaFratta, Christopher N.; Baldacchini, Tommaso; Fourkas, John T.; Stewart, JohnS.S.; Saleh, Bahaa E. A.; Teich, Malvin C.

doi:10.1063/1.1863414

Cited by 61 publications

(45 citation statements)

References 13 publications

(3 reference statements)

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“…This range of values is in agreement with the elastic modulus of microcantilevers prepared by two-photon polymerization of the same monomer mixture. [25] Thus, regardless of the polymerization process, the polymerized material has similar mechanical properties. We confirmed biocompatibility over the entire range of compositions shown in Fig.…”

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confidence: 98%

3D Cell‐Migration Studies using Two‐Photon Engineered Polymer Scaffolds

et al. 2008

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confidence: 98%

3D Cell‐Migration Studies using Two‐Photon Engineered Polymer Scaffolds

et al. 2008

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“…MPP was first developed by Strickler and Webb, [62] and has now been used to create a range of high-resolution 3D free-form structures, including microchannels, [63][64][65] cantilevers, [66][67][68] microgears, [69,70] sub-micrometer oscillators, [71] hydrophobic atomic force microscopy tips, [72] and PhCs. [59,67,[73][74][75][76][77][78][79][80][81] Briefly, MPP utilizes the nonlinear nature of the multiphoton excitation process to only excite dye molecules in a very small volume around the focal point, with dimensions on the order of the resolution limit.…”

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confidence: 99%

Introducing Defects in 3D Photonic Crystals: State of the Art

2006

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Public Reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instructions, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comment regarding this burden estimates or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington Headquarters Services, Directorate for information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and to the Office of Management and Budget, Paperwork Reduction Project (0704-0188,) Washington, DC 20503. AGENCY USE ONLY ( Leave Blank)2. REPORT DATE Advanced Materials, 18, 2665-2678 (2006). 3D photonic crystals (PhCs) and photonic bandgap (PBG) materials have attracted considerable scientific and technological interest. In order to provide functionality to PhCs, the introduction of controlled defects is necessary; the importance of defects in PhCs is comparable to that of dopants in semiconductors. Over the past few years, significant advances have been achieved through a diverse set of fabrication techniques. While for some routes to 3D PhCs, such as conventional lithography, the incorporation of defects is relatively straightforward; other methods, for example, selfassembly of colloidal crystals (CCs) or holography, require new external methods for defect incorporation. In this review, we will cover the state of the art in the design and fabrication of defects within 3D PhCs. The figure displays a fluorescence laser scanning confocal microscopy image of a y-splitter defect formed through two-photon polymerization within a CC. SUBJECT TERMS 15. NUMBER OF PAGES 1416. PRICE CODE SECURITY CLASSIFICATION OR REPORT UNCLASSIFIED SECURITY CLASSIFICATION ON THIS PAGE UNCLASSIFIED SECURITY CLASSIFICATION OF ABSTRACT UNCLASSIFIED LIMITATION OF ABSTRACT UL IntroductionPhotonic crystals (PhCs) are materials that possess spatial periodicity in their dielectric constant on the order of the wavelength (k) of light. These materials can strongly modulate light [1] and, with sufficient dielectric contrast and an appropriate geometry, may exhibit a photonic bandgap (PBG). This concept was first proposed in 1975 by Bykov [2] but remained relatively unknown until the seminal work of Yablonovitch [3] and John. [4] In a rough analogy to semiconductors, which possess an electronic bandgap, a PBG material prohibits the existence of photons with energies in the PBG. PhCs are naturally classified by the dimensionality of their periodicity, and in order to rigorously prevent the propagation of PBG frequencies in all directions, a 3D PhC with an omnidirectional, or complete PBG (cPBG) is required. cPBG materials have been fabricated and well characterized for operation at microwave and radio frequencies, however, operation in the visible and IR requires the characteristic length scales of these structures to be scaled down by several orders of magnitude...

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“…[99] Der Mechanismus dieses Vorgangs ist bisher kaum verstanden. [107] und aus der Federkonstante und den physikalischen Abmessungen lässt sich wiederum der Youngsche Elastizitätsmodul des Federarms berechnen. [108] Messungen an einer Reihe von Federarmen mit verschiedenen Abmessungen ergaben für diesen Elastizitätsmodul einen Wert von 0.44 GPa, der vergleichbar ist mit dem Messwert für eine makroskopische Probe des gleichen, allerdings mit UVLicht erzeugten Polymers (2 GPa).…”

Section: Angewandte Chemieunclassified

“…[108] Messungen an einer Reihe von Federarmen mit verschiedenen Abmessungen ergaben für diesen Elastizitätsmodul einen Wert von 0.44 GPa, der vergleichbar ist mit dem Messwert für eine makroskopische Probe des gleichen, allerdings mit UVLicht erzeugten Polymers (2 GPa). [107] Dass der Elastizitätsmodul der Federarme kleiner als der des UV-Polymers ist, geht wahrscheinlich auf eine geringere Vernetzung des mit MAP hergestellten Polymers zurück. Zukünftige Studien könnten den Einfluss der Bestrahlungszeit, einer zusätzlichen UV-Behandlung nach der Bestrahlung oder des verwendeten Solvens auf die mechanischen Eigenschaften der MAP-Strukturen aufklären.…”

Section: Angewandte Chemieunclassified

Mehrphotonen‐Mikrofabrikation

et al. 2007

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Chemische und physikalische Prozesse, die auf Mehrphotonenabsorption beruhen, ermöglichen die Herstellung komplexer dreidimensionaler Mikrostrukturen mit einer Auflösung von 100 nm. Seit der experimentellen Realisierung der Mehrphotonenabsorption vor nicht einmal zehn Jahren wurden in diesem Bereich rasch Fortschritte erzielt, und Mehrphotonentechniken werden heute für die Herstellung funktionsfähiger Mikrosysteme eingesetzt. In diesem Aufsatz diskutieren wir die Techniken und Materialien, die für die Mehrphotonen‐Mikrofabrikation verwendet werden, sowie bereits beschriebene und gegenwärtig angestrebte Anwendungen. Wir betrachten auch die Perspektiven dieses Felds für Forschung und Industrie.

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Polymer microcantilevers fabricated via multiphoton absorption polymerization

Cited by 61 publications

References 13 publications

3D Cell‐Migration Studies using Two‐Photon Engineered Polymer Scaffolds

3D Cell‐Migration Studies using Two‐Photon Engineered Polymer Scaffolds

Introducing Defects in 3D Photonic Crystals: State of the Art

Mehrphotonen‐Mikrofabrikation

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