IP-Dip-based woodpile structures for VIS and NIR spectral range: complex PBG analysis

Urbancová, Petra; Pudiš, Dušan; Kuzma, Anton; Goraus, Matej; Gaso, Peter; Jandura, Daniel

doi:10.1364/ome.9.004307

Cited by 13 publications

(5 citation statements)

References 40 publications

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“…The resolution of the SMP photoresists are already very high, but it is not yet at the resolution capabilities of the TPL system. Further improvements in resolution could be achieved by tweaking its composition, bringing it to the level of commercially available photoresist such as IP-Dip (~100 nm feature size 58 , 59 ). Due to the shape memory effect at submicron scale, both microtopography and optical properties of the structures can recover well.…”

Section: Discussionmentioning

confidence: 99%

“…By fabricating of the characterized SMP photoresist, we printed 300 nm scale structures with good recoverability in both microtopography and optical properties. There is still room for improvement of resolution comparing to commercially available photoresist such as IP-Dip (~100 nm feature size 56,57 ). An ideal SMP for TPL should have high stiffness at the glassy state and low shrinkage during printing to avoid collapse and distortion so as to further bring down the feature size.…”

Section: Discussionmentioning

confidence: 99%

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Structural multi-colour invisible inks with submicron 4D printing of shape memory polymers

et al. 2021

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Four-dimensional (4D) printing of shape memory polymer (SMP) imparts time responsive properties to 3D structures. Here, we explore 4D printing of a SMP in the submicron length scale, extending its applications to nanophononics. We report a new SMP photoresist based on Vero Clear achieving print features at a resolution of ~300 nm half pitch using two-photon polymerization lithography (TPL). Prints consisting of grids with size-tunable multi-colours enabled the study of shape memory effects to achieve large visual shifts through nanoscale structure deformation. As the nanostructures are flattened, the colours and printed information become invisible. Remarkably, the shape memory effect recovers the original surface morphology of the nanostructures along with its structural colour within seconds of heating above its glass transition temperature. The high-resolution printing and excellent reversibility in both microtopography and optical properties promises a platform for temperature-sensitive labels, information hiding for anti-counterfeiting, and tunable photonic devices.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Structural multi-colour invisible inks with submicron 4D printing of shape memory polymers

et al. 2021

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“…In this work we describe a 3D PhC fabricated using a negative tone UV-curable resin (IP-DIP, Nanoscribe GmbH). Although the refractive index of IP-DIP (1.552) is not sufficient to achieve complete PBG as the dielectric contrast is low, however a partial PBG is achievable for sensing applications in both TE and TM modes [25]. The band-structure for 2PP stereolithographically printed 3D PhC is modeled and is shown in figure 3.…”

Section: B 3d Phc Analysismentioning

confidence: 99%

2-Photon Polymerized IP-Dip 3D Photonic Crystals for Mid IR Spectroscopic Applications

Singhal

Dalmiya

Lynch

et al. 2023

IEEE Photon. Technol. Lett.

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Photonic Crystals (PhC) are periodically structured dielectric materials that have been subject to extensive research efforts over the last two decades. PhC are known for the slow-light phenomenon, which increases the interaction time between light and the target gas, thereby enhancing sensitivity when applied to sensors. Slow light is best realized using three-dimensional (3D) PhC with a complete photonic band-gap (PBG). However, they are inherently difficult to fabricate with planar microfabrication techniques. In this work, we present two-photon polymerized (2PP) stereolithographically fabricated 3D PhC targeting midinfrared (MIR) spectroscopic range. Finite Element Analysis (FEA) was performed on a two-dimensional (2D) PhC waveguide (PhCW) to analyze the significance of PBG and slow light properties. Additional FEA was conducted and validated experimentally using fabricated 3D PhC. The ability to tune PhC to a desired wavelength along with their repeatability and feasibility is experimentally demonstrated. This paper presents the first, to our knowledge, 3D PhC fabricated using 2PP stereolithography operating at this wavelength.

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“…The femtosecond laser pulses are focused by 63 × 1.4 NA immersion objective in the volume of liquid IP-Dip polymer and TPA initiates the polymerization process in the voxel. We have chosen IP-Dip polymer for fabrication of grating structure because it guarantees ideal focusing and highest resolution for Nanoscribe′s DiLL mode [ 46 , 47 ].…”

Section: Design and Fabrication Of Spr Structurementioning

confidence: 99%

IP-Dip-Based SPR Structure for Refractive Index Sensing of Liquid Analytes

et al. 2021

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In this paper, we present a two-dimensional surface plasmon resonance structure for refractive index sensing of liquid analytes. The polymer structure was designed with a period of 500 nm and prepared in a novel IP-Dip polymer by direct laser writing lithography based on a mechanism of two-photon absorption. The sample with a set of prepared IP-Dip structures was coated by 40 nm thin gold layer. The sample was encapsulated into a prototyped chip with inlet and outlet. The sensing properties were investigated by angular measurement using the prepared solutions of isopropyl alcohol in deionized water of different concentrations. Sensitivity of 478–617 nm per refractive index unit was achieved in angular arrangement at external angle of incidence of 20°.

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IP-Dip-based woodpile structures for VIS and NIR spectral range: complex PBG analysis

Cited by 13 publications

References 40 publications

Structural multi-colour invisible inks with submicron 4D printing of shape memory polymers

Structural multi-colour invisible inks with submicron 4D printing of shape memory polymers

2-Photon Polymerized IP-Dip 3D Photonic Crystals for Mid IR Spectroscopic Applications

IP-Dip-Based SPR Structure for Refractive Index Sensing of Liquid Analytes

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