All-optical switching in dye-doped DNA nanofibers

Szukalski, Adam; Moffa, Maria; Camposeo, Andrea; Pisignano, Dario; Myśliwiec, Jarosław

doi:10.1039/c8tc04677h

Cited by 28 publications

(22 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, pyrazoline derivatives have been introduced which showing much faster photoswitching could be used for enhancing the modulation frequencies of printed structures. 28 Overall, the photoactive and photo-curable resins here studied show optical properties suitable for all-optical control of light beams, that is promising for future exploitation in 3D printing processes by STL.…”

Section: Resultsmentioning

confidence: 81%

“…Photo-induced birefringence was investigated by a pump-probe experimental set-up, which is typically used for the investigation of the optical Kerr effect. 28 A laser probe beam (λprobe = 638 nm, linearly polarized) is sent through the sample at normal incidence. The probe beam polarization is determined by a polarizer positioned between the probe laser source and the sample, while the light transmitted by the sample is analyzed by a second polarizer with axis perpendicular to the first.…”

Section: Methodsmentioning

confidence: 99%

“…This configuration is known to maximize the photo-induced optical anisotropy. 28 With the pump beam switched off, the sample does not feature any optical birefringence and, as a consequence of the presence of two polarizers with crossed axis along the path of the probe beam, no signal is detected by the photodiode. By switching the pump beam on, an optical anisotropy is induced in the area irradiated by the pump, which leads to a rotation of the polarization of the probe beam passing through the sample, and an increase of the signal transmitted at the second polarizer according to the relation:…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

3D photo-responsive optical devices manufactured by advanced printing technologies

Szukalski¹,

Uttiya²,

D’Elia³

et al. 2019

Organic Photonic Materials and Devices XXI

Self Cite

View full text Add to dashboard Cite

Photonic components responsive to external optical stimuli are attracting increasing interest, because their properties can be manipulated by light with fast switching times, high spatial definition, and potentially remote control. These aspects can be further enhanced by novel architectures, which have been recently enabled by the availability of 3D printing and additive manufacturing technologies. However, current methods are still limited to passive optical materials, whereas photo-responsive materials would require the development of 3D printing techniques able to preserve the optical properties of photoactive compounds and to achieve high spatial resolution to precisely control the propagation of light. Also, optical losses in 3D printed materials are an issue to be addressed. Here we report on advanced additive manufacturing technologies, specifically designed to embed photo-responsive compounds in 3D optical devices. The properties of 3D printed devices can be controlled by external UV and visible light beams, with characteristic switching times in the range 1-10 s.

show abstract

Section: Resultsmentioning

confidence: 81%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

3D photo-responsive optical devices manufactured by advanced printing technologies

Szukalski¹,

Uttiya²,

D’Elia³

et al. 2019

Organic Photonic Materials and Devices XXI

Self Cite

View full text Add to dashboard Cite

show abstract

“…The label serves as an indirect indicator of the presence of a concrete analyte. Hybridization between a DNA probe and its specific target has been detected by doping with chromophore molecules (Szukalski et al, 2019). Fluorescence emission from molecular beacons (Yao et al, 2003), quantum dots (Chen et al, 2010a), or fluorescent-labeled signal probes (Zhu et al, 2017) have also been employed for NA detection.…”

Section: Evanescent-wave Optical Biosensorsmentioning

confidence: 99%

Advanced Evanescent-Wave Optical Biosensors for the Detection of Nucleic Acids: An Analytic Perspective

et al. 2019

View full text Add to dashboard Cite

Evanescent-wave optical biosensors have become an attractive alternative for the screening of nucleic acids in the clinical context. They possess highly sensitive transducers able to perform detection of a wide range of nucleic acid-based biomarkers without the need of any label or marker. These optical biosensor platforms are very versatile, allowing the incorporation of an almost limitless range of biorecognition probes precisely and robustly adhered to the sensor surface by covalent surface chemistry approaches. In addition, their application can be further enhanced by their combination with different processes, thanks to their integration with complex and automated microfluidic systems, facilitating the development of multiplexed and user-friendly platforms. The objective of this work is to provide a comprehensive synopsis of cutting-edge analytical strategies based on these label-free optical biosensors able to deal with the drawbacks related to DNA and RNA detection, from single point mutations assays and epigenetic alterations, to bacterial infections. Several plasmonic and silicon photonic-based biosensors are described together with their most recent applications in this area. We also identify and analyse the main challenges faced when attempting to harness this technology and how several innovative approaches introduced in the last years manage those issues, including the use of new biorecognition probes, surface functionalization approaches, signal amplification and enhancement strategies, as well as, sophisticated microfluidic solutions.

show abstract

“…This anisotropy might significantly affect the resulting optical properties. Examples of so‐highlighted phenomena include polarized emission, directional energy migration, optical dichroism and birefringence, and low‐threshold excitation for optical gain . Moreover, the highly elongated shape of NWs and NFs naturally provides geometries for optical cavities, such as Fabry–Pérot (FP), whispering gallery mode (WGM) microcavities, and ring‐shaped resonators with a high quality factor ( Q ) .…”

Section: Introductionmentioning

confidence: 99%

Laser Systems and Networks with Organic Nanowires and Nanofibers

Matino

Persano

Camposeo

et al. 2019

Advanced Optical Materials

Self Cite

View full text Add to dashboard Cite

The potentialities of miniaturized laser sources are still far from being fully developed. Unprecedented opportunities are generated in this field by organic nanowires and nanofibers, which can be used as building blocks of micro‐ and nanolasers in which they combine optical gain, waveguiding, and very high versatility to create nanophotonic networks. The progress in laser devices and network architectures based on optically pumped organic light‐emitting nanowires and nanofibers is here presented, with emphasis on developed active materials, fabrication technologies, lasing mechanisms, and cavity geometries, and on achieved device performance in terms of spectral tunability, excitation threshold, and resonator quality factors. Recent examples of optical coupling of different miniaturized lasers, of their application in optical sensing, and of network lasers are presented. Future directions for research are also outlined, which include the exploration of new classes of active organic or hybrid materials within nanowires, the more in‐depth characterization of the fundamental properties of these lasers, and the use of topologically defined organic nanophotonics in network science, computing, and diagnostics.

show abstract

All-optical switching in dye-doped DNA nanofibers

Abstract: Electrospun fibers made of DNA semi-intercalated with a push–pull, luminescent nonlinear pyrazoline derivative are introduced as novel all-optical switches.

Cited by 28 publications

References 66 publications

3D photo-responsive optical devices manufactured by advanced printing technologies

3D photo-responsive optical devices manufactured by advanced printing technologies

Advanced Evanescent-Wave Optical Biosensors for the Detection of Nucleic Acids: An Analytic Perspective

Laser Systems and Networks with Organic Nanowires and Nanofibers

Contact Info

Product

Resources

About