Hybrid materials for integrated photonics

P Bettotti - Advances in Optics, 2014 - Wiley Online Library
In this review materials and technologies of the hybrid approach to integrated photonics (IP)
are addressed. IP is nowadays a mature technology and is the most promising candidate to …

Forward emission of positronium from nanochanneled silicon membranes

S Mariazzi, B Rienäcker, R Magrin Maffei, L Povolo… - Physical Review B, 2022 - APS
Positronium beam formation and manipulation are required in several fundamental
experiments. Efficient positron/positronium conversion in transmission configuration would …

Roughness-induced enhancement of optical absorption in random media

F Sgrignuoli, P Bettotti - JOSA B, 2016 - opg.optica.org
The effect of surface roughness on the optical absorption of a porous material is numerically
investigated. We performed a comparative study among different porous geometries and we …

Mechanical stress relief in porous silicon free standing membranes

R Guider, C Traversa, P Bettotti - Optical Materials Express, 2015 - opg.optica.org
In this work, we report on the difference of mechanical stress in free standing and attached
Porous silicon membranes. By performing Raman analysis, we demonstrate that the tensile …

Porous Silicon: From Optical Sensor to Drug Delivery System

C Piotto, P Bettotti - Submicron Porous Materials, 2017 - Springer
Nowadays sensors are everywhere around us. We are monitoring nearly all aspects of our
daily life: from health to security, from domotic to environmental aspects. The availability of …

Optical Sensors Based on Nanoporous Materials

P Bettotti, N Kumar, R Guider, M Scarpa - Sensors: Proceedings of the …, 2015 - Springer
Nanoporous materials are ideal candidates to fabricate sensors with high sensitivities. Using
nanoporous materials both the strength and the type of interactions between analytes and …

Silicon Nanostructures: A Versatile Material for Photonics

Z Bisadi, P Cortelletti, A Zanzi, C Piotto… - ECS …, 2016 - iopscience.iop.org
Silicon is the most common semiconductor in technology. Its main limit is the lacking of
efficient light emission properties. Here quantum effects are exploited to fabricate optically …

Role of nonspecific binding: A comparison among flow through and flow over assays in nanoporous material

P Bettotti, N Kumar, R Guider… - … , and Actuation for …, 2014 - spiedigitallibrary.org
In this article we describe the fabrication of free standing n-type porous silicon microcavity
(MC) and their properties as liquid sensors. We have optimized the etching recipe to keep …

Fluorinated bulk surfaces as matrix-free mass spectrometry transducers

C Piotto, P Bettotti, G Guella - 2017 IEEE SENSORS, 2017 - ieeexplore.ieee.org
Matrix Assisted Laser Desorption Ionization (MALDI) is a soft ionization method with
widespread analytical applications. One of its limits is the spurious signal in the low mass …