Patterned crystallisation on self-assembled monolayers with integrated regions of disorder†
نویسنده
چکیده
This paper describes the engineering of patterned calcite films using templating by self-assembled monolayers (SAMs) supported on micropatterned mixed metal substrates. The substrates were prepared by deposition of one metal (Au, Ag) onto the surface of another metal (Au, Ag) through a stencil or photoresist masks. The micropatterning arises from the generation of disordered regions in SAMs at the interfaces between the two metals, where structurally different SAMs meet. The mechanism of diffusion-limited nucleation on these substrates that governs the formation of different patterns of calcite crystals, crystalline outlines of the underlying patterns, densely crystallised islands and patterned oriented films, is discussed. The ability to control patterned crystallisation with sub-50 nm resolution can find applications in the fabrication of crystalline inorganic materials with complex form.
منابع مشابه
Selective atomic layer deposition of titanium oxide on patterned self-assembled monolayers formed by microcontact printing.
We demonstrate a selective atomic layer deposition of TiO2 thin films on patterned alkylsiloxane self-assembled monolayers. Microcontact printing was done to prepare patterned monolayers of the alkylsiloxane on Si substrates. The patterned monolayers define and direct the selective deposition of the TiO2 thin film using atomic layer deposition. The selective atomic layer deposition is based on ...
متن کاملElectroactive self-assembled monolayers that permit orthogonal control over the adhesion of cells to patterned substrates.
This article describes an electroactive substrate that displays two independent dynamic functions for controlling the adhesion of cells. The approach is based on self-assembled monolayers on gold that are patterned into regions presenting the Arg-Gly-Asp peptide cell adhesion ligand. The patterned regions differ in the electrochemical properties of the linkers that tether the peptides to the mo...
متن کاملScanning Force Microscopies Can Image Patterned Self-Assembled Monolayers
This paper demonstrates that scanning probe microscopies (SPMs) can image patterned self-assembled monolayers (SAMs) formed by microcontact printing. Lateral force microscopy (LFM) and force modulation microscopy (FMM) showed contrast between regions of patterned SAMs terminated by different chemical functionalities. Normal force microscopy (NFM) typically showed less contrast than LFM or FMM b...
متن کاملMonolayer resist for patterned contact printing of aligned nanowire arrays.
Large-area, patterned printing of nanowires by using fluorinated self-assembled monolayers as the resist layer is demonstrated. By projecting a light pattern on the surface of the monolayer resist in an oxygen-rich environment, sticky and nonsticky regions on the surface are directly defined in a single-step process which then enables the highly specific and patterned transfer of the nanowires ...
متن کامل