Skip to Main content Skip to Navigation
Journal articles

Functionalization of Scanning Probe Tips with Epitaxial Semiconductor Layers

Abstract : Functionalized scanning probe tips hold great promise for the controlled delivery of signals from and to selected nanoscale volumes. Here, a new nanotechnological approach for the functionalization of scanning probe tips is presented, targeting the transfer of the optical, electrical, thermal, or chemical properties of precisely characterized epitaxial semiconductor layers to the nanoscale probe tip. Homogeneously doped, strain-relaxed heteroepitaxial germanium layers, several micrometers thick, are first grown on silicon wafers by low-energy plasma-enhanced chemical vapor deposition and then employed to functionalize the probe apex. This choice of materials and growth technique enables the future scalability of the tip functionalization process toward high production volumes. The fabricated probe tips are investigated in a transmission electron microscope, revealing that the crystal structure and the homogeneous doping level of the epitaxial layers are unchanged after the probe-tip functionalization process. These doped-germanium tips are also tested as nanoemitters of light at telecom wavelengths (1.55 µm) and applied as scattering probes for near-field mid-infrared microscopy. The reported combination of heteroepitaxial growth and a nanofabrication approach can be extended to a variety of epitaxial materials, thus enabling a new generation of scanning probes for the investigation of nanostructured materials and devices.
Document type :
Journal articles
Complete list of metadata
Contributor : Fatima Pereira Connect in order to contact the contributor
Submitted on : Thursday, February 1, 2018 - 11:48:46 AM
Last modification on : Saturday, June 25, 2022 - 10:28:58 PM

Links full text



Valeria Giliberti, Emilie Sakat, Monica Bollani, M. Virginia Altoe, Mauro Melli, et al.. Functionalization of Scanning Probe Tips with Epitaxial Semiconductor Layers. Small Methods, Wiley, 2017, 1 (3), pp.1600033 ⟨10.1002/smtd.201600033⟩. ⟨hal-01698439⟩



Record views