The conversion from the microscale polymer wires to nanoscale carbon wires resulted from volume reduction of negative photoresist structures during pyrolysis under vacuum conditions. The suspended nanowire bridging Pevonedistat ic50 carbon posts demonstrated perfect ohmic contact due to the monolithic structures. The transverse Smad2 phosphorylation gradient

of the longitudinal tension and the bridge-shaped geometry with thick bent supports of the carbon nanowire ensures high resistance to device failure due to a stiction phenomenon that limits reproducibility and applications of suspended nanostructure-based nanodevices. Furthermore, the overall density of suspended nanowire array could be enhanced by modulating the geometry of the nanowire structures from straight selleck nanowire arrays aligned in parallel to nanomeshes that neither conventional bottom-up nor top-down nanofabrication processes can realize easily. The linked structure of the nanomeshes ensured better structural robustness than that of a linearly aligned nanowire array. We believe that the advantageous properties of the suspended carbon nanostructures including cost-effective batch nanofabrication

procedure, semiconductor type electrical conductivity, electrochemical sensing capability, easy surface functionalization, structural robustness, and suspended geometry will enable those nanostructures to work as platforms for a variety of nanodevices such as gas sensors, biosensors, and nanogenerators

that can be implemented by simply coating functional materials on the suspended carbon nanostructures. Acknowledgements This research was supported by SK Innovation Breakthrough Technology Research Program, the development program of local science park funded by the Ulsan Metropolitan City and the MSIP (Ministry of Science, ICT and Future Planning), and Basic Science Research Program through the National Research Foundation of Korea (2009–0077340). We are grateful for technical assistance from the staff members at UCRF (UNIST Central Research Facilities) in UNIST and support from the PLSI supercomputing resources of KISTI and UNIST. Electronic supplementary material Additional Sodium butyrate file 1: Supporting Information. The file contains discussion on the longitudinal tension and geometry of suspended carbon nanowires and the simulation of the diffusion-limited current of a suspended carbon nanowire. Figure S1. Schematic diagrams and SEM images of FIB milling processes. Figure S2. SEM images of bridge-shaped carbon nanowires with bent supports. Table S1. Structural dimension change of suspended carbon nanostructures through the pyrolysis process. Table S2. Structural dimension changes of suspended SU-8 microwires and bulk posts in various pyrolysis temperature conditions. (DOCX 1 MB) References 1.