Atomic layer deposition of biobased nanostructured interfaces for energy, environmental and health applications

Abstract

The most fundamental phenomena in the immobilising of biomolecules on the nanostructured materials for energy, environmental and health applications are the control of interfaces between the nanostructures/nanopores and the immobilized biomaterials. Thus, the throughput of all those biobased nanostructured materials and devices can be improved or controlled by the enhanced geometric area of the nanostructured interfaces if an efficient immobilization of the biomolecules is warranted. In this respect, an accurate control of the geometry (size, porosity, etc.) and interfaces is primordial to finding the delicate balance between large/control interface areas and good immobilization conditions. Here, we will show how the atomic layer deposition (ALD) can be used as a tool for the creation of controlled nanostructured interfaces in which the geometry can be tuned accurately and the dependence of the physical-chemical properties on the geometric parameters can be studied systematically in order to immobilize biomolecules. We will show mainly examples of how these methods can be used to create single nanopores for mass spectroscopy and DNA sequencing, and membrane for gas separation and water treatment in which the performance varies with the nanostructure morphologies/interfaces and the immobilization conditions.

ZnO films formed by atomic layer deposition as an optical biosensor platform for the detection of Grapevine virus A-type proteins

“…The mentioned structural parameters make a strong impact on optical, electrical and mechanical properties (Chaaya et al, 2013). In previous studies (Bechelany et al, 2015;Chaaya et al, 2013;Viter et al, 2015aViter et al, , 2015bViter et al, , 2016, we investigated the tuning of the optical and the structural properties of ultrathin ZnO films deposited by ALD along with their potential applications in sensors and biosensors (Chaaya et al, 2013).…”

Enhancement of Electronic and Optical Properties of ZnO/Al2O3 Nanolaminate Coated Electrospun Nanofibers

“…Zinc Oxide (ZnO) which can be incorporated in the nanolaminate material is a n-type semiconductor with wide band gap value (3.3 eV) and high exciton binding energy (0.06 eV). It also exhibited room temperature photoluminescence in UV–vis region. , Among the different techniques to elaborate oxides based nanolaminates, atomic layer deposition (ALD) is a powerful tool to fabricate different oxide materials. , It is based on two self-limiting surface reactions which allow growing continuous, smooth, and conformal ultrathin film on high aspect ratio and complex substrates such as the 1D nanotructures with a precise dimensional control. This paper deals with the investigation of electronic and optical properties of ZnO/Al 2 O 3 nanolaminate coated electrospun nanofibers.…”

Atomic layer deposition for biosensing applications

“…The properties of materials at the nanoscale strongly depend on their size, shape, chemical composition, and surface area (Bechelany et al, 2015;. Thus, ALD has been extensively used to modify and enhance different electrical, optical, catalytical, and structural properties of biosensor materials (Chen et al, 2004;Cheun et al, 2010;O'Neill et al, 2015;Wang et al, 2012).…”