HOLOGRAPHY Embossed Hologram Motion Pictures for Television Playback

Bartolini, R. A.; Hannan, W. J.; Karlsons, D.; Lurie, M.

doi:10.1364/ao.9.002283

Cited by 72 publications

(15 citation statements)

References 12 publications

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“…According to (Heckele and Schomburg 2004), a review article, the first paper on micro molding of polymers using a hot-embossing process was published in 1970 by a group of researchers from RCA laboratories at Princeton, NJ, USA (Bartolini et al 1970), aimed at developing a low-cost reproduction technique of hologram motion pictures for television playback (Hannan et al 1973). The hot-embossing process includes three principal steps (Hecklele et al 1998): (1) a polymer film is placed on a solid substrate in a hot-embossing machine ( Fig.…”

Section: Patterning Of Conducting Polymers Using the Hot-embossing Rementioning

confidence: 99%

Generation of micropatterns of conducting polymers and aluminum using an intermediate-layer lithography approach and some applications

Luo

2009

Microsyst Technol

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Conducting polymers, because of their promising potential to replace silicon and metals in building devices, have attracted great attention since the discovery of high conductivity in doped polyacetylene in 1977. Lithographic techniques present significant technical challenges when working with conducting polymers. Sensitivity of conducting polymers to environmental conditions (e.g., air, oxygen, moisture, high temperature, and chemical solutions) makes current photolithographic methods unsuitable for patterning the conducting polymers due to the involvement of wet and/or dry etching processes in those methods. Existing non-photolithographic approaches have limitations in throughput, resolution, or electrical insulation. Therefore, an intermediate-layer lithography (ILL) approach has been recently developed by my group to produce conducting polymer micro/nanostructures. In the ILL method, an intermediate layer of an electrically insulating polymer is coated between the substrate and a layer of the conducting polymer to be printed. Subsequently, the conducting polymer is printed through mold insertion using a hot-embossing process. The current hotembossing based methods face the obstacles of residual layer and depth of field (i.e., the height variation in the mold structures). In contrast, the ILL approach does not leave a residual layer in the material of interest, making conducting polymer patterns isolated from one another and avoiding the shorting problem in the electrical applications of these patterns. Furthermore, in the ILL, the height variation potentially existing among the mold structures has been transferred to the intermediate layer, ensuring that all patterns in the mold have been properly transferred to the conducting polymer layer. In addition to conducting polymers, the ILL can also be applied to pattern metals as well as other types of polymers. This paper gives a review of this ILL method and reports the results that we have achieved to date, including generation and applications of single and multiple layers of microstructures of conducting polymers and aluminum.

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Section: Patterning Of Conducting Polymers Using the Hot-embossing Rementioning

confidence: 99%

Generation of micropatterns of conducting polymers and aluminum using an intermediate-layer lithography approach and some applications

Luo

2009

Microsyst Technol

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“…The three-step patterning process of the ILL is similar to that of the hot-embossing process (Bartolini et al 1970;Hecklele et al 1998). The critical difference is that the substrate in the hot-embossing process has only the layer of the material to be printed, while the substrate in the ILL approach involves an additional intermediate layer of a non-conducting polymer.…”

Section: Fabrication Of Microwiresmentioning

confidence: 99%

Multiple conducting polymer microwire sensors

Chakraborty¹,

Luo

2009

Microsyst Technol

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In this work, conducting polymer microwires of three commonly used conducting polymers were fabricated simultaneously on a common substrate using an intermediate-layer lithography (ILL) method. The three conducting polymers under consideration were polypyrrole (PPy), sulphonated polyaniline (SPANI) and poly(3,4-ethylenedioxythiophen)-poly(4-styrenesulphonate) (PEDOT-PSS). The fabricated microwires were implemented as sensing elements in detecting humidity and two organic vapors (i.e., methanol and acetone). The sensitivity of a single PPy microwire was compared with a rectangular PPy film after both were exposed to 45-85% humidity. The microwire sensor, due to its higher surface-to-volume ratio, was found to be more sensitive than the film sensor at low levels of humidity (between 45 and 58%). Beyond 58% humidity, the responses of the film and microwire sensors were similar. Three different sets of conducting polymer microwires (of PPy, SPANI and PEDOT) were then fabricated and employed as sensors to detect methanol, acetone and their mixtures. These microwires exhibited wave-like responses when they were exposed to these targets. The PPy and PEDOT microwires showed higher sensitivities in detecting methanol and acetone, respectively. The SPANI microwires exhibited similar responses in detecting methanol and acetone. The results demonstrate that microwire sensors were more effective than film sensors in detecting little quantities of target molecules. A sensor platform which integrates multiple microwire detectors is promising to detect multiple targets, and it also provides more information in detecting and distinguishing targets.

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“…Hot embossing was implemented in 1970 by a group ofresearchers from RCA Laboratories in Princeton, NJ, USA [4]. The objective of this work was to develop a low-cost reproduction technique of surface hologram motion pictures for television playback.…”

Section: Development Of Micro Hot Embossingmentioning

confidence: 99%

Introduction

Worgull¹

2009

Hot Embossing

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HOLOGRAPHY Embossed Hologram Motion Pictures for Television Playback

Cited by 72 publications

References 12 publications

Generation of micropatterns of conducting polymers and aluminum using an intermediate-layer lithography approach and some applications

Generation of micropatterns of conducting polymers and aluminum using an intermediate-layer lithography approach and some applications

Multiple conducting polymer microwire sensors

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