Nanoplasmonic structures for biophotonic applications: SERS overview

Gopalakrishnan, Anisha; Malerba, Mario; Tuccio, Salvatore; Panaro, Simone; Miele, Ermanno; Chirumamilla, Manohar; Santoriello, S.; Dorigoni, C.; Giugni, Andrea; Zaccaria, Remo Proietti; Liberale, Carlo; Angelis, Francesco De; Razzari, Luca; Krahne, Roman; Toma, Andréa; Das, Gobind; Fabrizio, E. Di

doi:10.1002/andp.201200145

Cited by 18 publications

(12 citation statements)

References 76 publications

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“…Thus, this approach plays an essential role in the particular design for the manufacturing of the nanoneedles. Further research can be forthcoming for the fabrication of nanoneedles where the combination of anisotropic and isotropic is essential for optimal functioning …”

Section: Resultsmentioning

confidence: 99%

Micro‐/Nanopillars for Micro‐ and Nanotechnologies Using Inductively Coupled Plasmas

Herth

Edmond

Bouville

et al. 2019

Physica Status Solidi (a)

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Herein, the plasma etching mask transfer of the resistance of e‐beam resists, both negative and positive, as well as nanoparticle masks and hard masks are investigated. Various microscale and nanoscale features are exposed under plasma etching chemistries and are examined through both Bosch and pseudo‐Bosch processes using an inductive‐coupled plasma‐deep reactive ion etching (ICP‐DRIE) system. The selection of masks transfer proposed in this work provides better flexibility and cost‐effective processing. The etch profile depending on plasma etching process and feature size is studied and highlighted. In particular, nanopillars are etched to a length of 10 μm and a diameter of 280 nm with a good aspect ratio (>30) yielding a selectivity of better than 100:1 and a satisfactory vertical profile.

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Section: Resultsmentioning

confidence: 99%

Micro‐/Nanopillars for Micro‐ and Nanotechnologies Using Inductively Coupled Plasmas

Herth

Edmond

Bouville

et al. 2019

Physica Status Solidi (a)

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“…In fact, non-resonant Raman spectroscopy suffers from an extremely small cross section, between 10 31 and 10 29 cm 2 /molecule, which is 12-14 orders of magnitude lower the typical fluorescence ones. When molecules are attached to specific nanometer-structured metallic substrates, Raman signal can be by far improved due to local field enhancement and molecules-substrate interaction, originating the so called Surface Enhanced Raman Scattering (SERS) [2][3][4]. Field enhancement is related to the physics of plasmons in metals and local chemical enhancement [5][6][7], which is an inherently broad band phenomenon.…”

Section: Introductionmentioning

confidence: 99%

“…Thenceforth, the possibility of control an enhanced local field with resolutions of few tens of nanometers has triggered improvements in different types of optical and charge transport spectroscopies, like in the case of SERS. Actual advancements in SERS, in fact, rely on engineered plasmonic structures [4] in which extremely intense electric fields are produced in very narrow regions, boosting the collected signal in an unprecedented way. Another important example is Tip Enhanced Raman Scattering (TERS) [9,10] that allows Raman mapping with sub wavelength resolution by exploiting the local field enhancement amplified via a plasmon resonance at the apex of a nanometer-sized tip, used as a scanning "local hot spot".…”

Section: Introductionmentioning

confidence: 99%

Novel Plasmonic Probes and Smart Superhydrophobic Devices, New Tools for Forthcoming Spectroscopies at the Nanoscale

Giugni

Torre

Allione

et al. 2014

NATO Science for Peace and Security Series B: Physics and Biophysics

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In this work we review novel strategies and new physical effects to achieve compositional and structural recognition at single molecule level. This chapter is divided in two main parts. The first one introduces the strategies currently adopted to investigate matter at few molecules level. Exploiting the capability of surface plasmon polaritons to deliver optical excitation at nanoscale, we introduce a technique relying on a new transport phenomenon with chemical sensitivity and nanometer spatial resolution. The second part describes how micro and nanostructured superhydrofobic textures can concentrate and localize a small number of molecules into a well-defined region, even when only an extremely diluted solution is available. Several applications of these devices as micro- and nano-systems for high-resolution imaging techniques, cell cultures and tissue engineering applications are also discussed

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“…The possibility to excite LSPs in different spectral windows by rotating the light polarization has been recently employed for the optimization of multiband sensing devices 6,7 . However conventional plasmonic systems are generally characterized by a broad electromagnetic (EM) response which, apart from cases of high aspect ratio geometries 1,6,8,9 , tends to reduce the optical spectral selectivity associated to anisotropic nanostructures.…”

Section: Introductionmentioning

confidence: 99%