RT journal article
T1 High-Resolution 3D Fabrication of Glass Fiber-Reinforced Polymer Nanocomposite (FRPN) Objects by Two-Photon Direct Laser Writing
A1 Ritacco, Tiziana
A1 Di Cianni, Wera
A1 Perziano, Dario
A1 Magarò, Pietro
A1 Convertino, Annalisa
A1 Maletta, Carmine
A1 De Luca, Antonio
A1 Sanz de León, Alberto
A1 Giocondo, Michele
A2 Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica
K1 direct laser writing
K1 two-photon absorption
K1 nanocomposites
K1 nanofabrication
K1 silica nanowires
K1 nanomechanics
AB This paper reports on the nanofabrication of a fiber-reinforced polymer nanocomposite (FRPN) by two-photon direct laser writing (TP-DLW) using silica nanowires (SiO2 NWs) as nanofillers, since they feature a refractive index very close to that of the photoresist used as a polymeric matrix. This allows for the best resolution offered by the TP-DLW technique, even with high loads of SiO2 NWs, up to 70 wt %. The FRPN presented an increase of approximately 4 times in Young's modulus (8.23 GPa) and nanohardness (120 MPa) when compared to those of the bare photoresist, indicating how the proposed technique is well-suited for applications with higher structural requirements. Moreover, three different printing configurations can be implemented thanks to the use of silicon chips, on which the SiO2 NWs are grown, as fabrication substrates. First, they can be effectively used as an adhesive layer when the laser beam is focused at the interface with the silicon substrate. Second, they can be used as a sacrificial layer, when the laser beam is focused in a plane inside the SiO2 NW layer. Third, only the outer shell of the object is printed so that the SiO2 NW tangle acts as the internal skeleton for the structure being fabricated in the so-called shell and scaffold printing strategy.
PB AMER CHEMICAL SOC
SN 10.1021/acsami.1c21708
SN 1944-8252
YR 2020
FD 2020-04
LK http://hdl.handle.net/10498/26883
UL http://hdl.handle.net/10498/26883
LA eng
DS Repositorio Institucional de la Universidad de Cádiz
RD 15-nov-2026