Nanostructured multifunctional surface with antireflective and antimicrobial characteristics.

Functional polymeric films with antireflective and hydrophobic properties have been widely used for electronic device displays. However, the design of such functional films with an antimicrobial characteristic has been a challenge. We designed a nanostructured surface using a rigorous coupled-wave analysis to obtain a period of 300 nm and an aspect ratio of 3.0 on a flat poly(methyl methacrylate) film. The fabricated nanostructure was hydrophobic and exhibited the desired optical characteristics with a reflectance of less than 0.5% over the visible wavelength range. Furthermore, the nanoimprinted polymer film exhibited antimicrobial characteristics and low adhesion when compared with the corresponding flat surface. The results suggest that the nanostructured surface designed in this study is multifunctional and should be suitable for the production of protective optical and hygienic polymer films for the displays of portable electronic devices.

[1]  Eric A. Owens,et al.  Near-infrared lipophilic fluorophores for tracing tissue growth , 2013, Biomedical materials.

[2]  Naoya Hayashi,et al.  Characterization of Antisticking Layers for UV Nanoimprint Lithography Molds with Scanning Probe Microscopy , 2010 .

[3]  J. Feijen,et al.  Adhesion of Escherichia coli on to a series of poly(methacrylates) differing in charge and hydrophobicity. , 1991, Biomaterials.

[4]  Elena P Ivanova,et al.  Natural bactericidal surfaces: mechanical rupture of Pseudomonas aeruginosa cells by cicada wings. , 2012, Small.

[5]  Eung Soo Kim,et al.  Improving light-emitting diode performance through sapphire substrate double-side patterning , 2013 .

[6]  Elena P Ivanova,et al.  Biophysical model of bacterial cell interactions with nanopatterned cicada wing surfaces. , 2013, Biophysical journal.

[7]  M. V. van Loosdrecht,et al.  Influence of interfaces on microbial activity. , 1990, Microbiological reviews.

[8]  J. Frangioni,et al.  High-throughput screening of small molecule ligands targeted to live bacteria surface. , 2013, Analytical Chemistry.

[9]  Abraham Marmur,et al.  The Lotus effect: superhydrophobicity and metastability. , 2004, Langmuir : the ACS journal of surfaces and colloids.

[10]  Hao Wang,et al.  Effect of superhydrophobic surface of titanium on staphylococcus aureus adhesion , 2011 .

[11]  Hao Zhang,et al.  A user-friendly method for synthesizing high-quality NaYF 4 :Yb,Er(Tm) nanocrystals in liquid paraffin , 2011 .

[12]  George Barbastathis,et al.  Nanotextured silica surfaces with robust superhydrophobicity and omnidirectional broadband supertransmissivity. , 2012, ACS nano.

[13]  J. Hench.  THE RCWA METHOD - A CASE STUDY WITH OPEN QUESTIONS AND PERSPECTIVES OF ALGEBRAIC COMPUTATIONS , 2008 .

[14]  K. Marshall,et al.  Mechanisms of Bacterial Adhesion at Solid-Water Interfaces , 1985 .

[15]  Surojit Chattopadhyay,et al.  Anti-reflecting and photonic nanostructures , 2010 .

[16]  M. Gardel,et al.  Cell–substrate interactions , 2010, Journal of physics. Condensed matter : an Institute of Physics journal.

[17]  Y. An,et al.  Concise review of mechanisms of bacterial adhesion to biomaterial surfaces. , 1998, Journal of biomedical materials research.

[18]  Elena P Ivanova,et al.  Bacterial retention on superhydrophobic titanium surfaces fabricated by femtosecond laser ablation. , 2011, Langmuir : the ACS journal of surfaces and colloids.

[19]  Yang-Tse Cheng,et al.  Effects of micro- and nano-structures on the self-cleaning behaviour of lotus leaves , 2006 .

[20]  Shuyan Xu,et al.  Low-temperature assembly of ordered carbon nanotip arrays in low-frequency, high-density inductively coupled plasmas , 2005 .

[21]  M. Gower,et al.  X-ray lithography using a KrF laser-plasma source. , 1986, Applied optics.

[22]  T. Webster,et al.  Decreased bacteria density on nanostructured polyurethane. , 2014, Journal of biomedical materials research. Part A.

[23]  R. Marchant,et al.  Nonspecific Staphylococcus epidermidis Adhesion , 2000 .

[24]  Hua Liu,et al.  Functional nanostructured surfaces in hybrid sol–gel glass in large area for antireflective and super-hydrophobic purposes , 2012 .

[25]  N. Yamada,et al.  Optimization of anti‐reflection moth‐eye structures for use in crystalline silicon solar cells , 2011 .

[26]  K. Han,et al.  Anti‐reflection and hydrophobic characteristics of M‐PDMS based moth‐eye nano‐patterns on protection glass of photovoltaic systems , 2011 .

[27]  Willie J. Padilla,et al.  Broadband Optical Antireflection Enhancement by Integrating Antireflective Nanoislands with Silicon Nanoconical‐Frustum Arrays , 2011, Advanced materials.

[28]  Hak Soo Choi,et al.  Near-Infrared Fluorescence Imaging for Noninvasive Trafficking of Scaffold Degradation , 2013, Scientific Reports.