Our results demonstrate that it is possible, by means of generation buckles on the silver nanorod (AgNR) array PDMS substrate, to enhance Raman signal P. aeruginosa bacteria due formation high density 'hot spots' among AgNR arrays which provides better entrapment and increases net effective contact area with metal surface.

We report the fabrication of anisotropic superhydrophobic surface with dual-scale roughness by deposition silver nanorods arrays on prestretched poly(dimethylsiloxane) (PDMS) using oblique angle and subsequent release strain after deposition, which resulted in formation microbuckles/wrinkles. The amplitude periodicity wrinkles were tuned varying prestretching mechanical (ε) applied to PDMS film from 0 30% prior Ag deposition. peaks valleys topography covered films lead wetting water droplet....

Abstract The ability to measure biomarkers, both specifically and selectively at the single‐molecule level in biological fluids, has potential transform diagnosis, monitoring, therapeutic intervention of diseases. use nanopores been gaining prominence this area, not only for sequencing but more recently screening applications. selectivity nanopore sensing can be substantially improved with labels, substantial challenges remain, especially when trying differentiate between bound from unbound...

Deaf and people with hearing impairment face everyday challenges in identifying the occurrence of household sounds like door bell, child crying or phone ringing. The objective this paper is to design implement a low cost stand-alone device for deaf notify doorbell ringing who live alone their house. system based on Raspberry pi which includes camera, vibrator, wireless GSM bluetooth. When visitor presses doorbell, captured image transferred wearable helps know right person at intruder. After...

In this study, we examined the low substrate temperature (Ts) growth mechanism of Ag thin films in atomic shadowing regime (Ts ≪ melting point Tm). The were deposited using glancing angle deposition (GLAD) at different temperatures varying from 320 K to 100 K. Interestingly, it is observed that on lowering instead showing a monotonic variation, film morphology changes ordered nanocolumns random and distorted columns, then columnar bunches nanowires. These results suggest effective adatom...

Gallium oxide (Ga2O3) has emerged as a fourth-generation semiconductor for futuristic device requirements. Integration of Ga2O3 with industry-viable gallium nitride (GaN) can provide pathway to design efficient technology. In this paper, we Ga2O3/GaN heterointerface by using simple thermal annealing method under an oxygen-rich environment. Thermal at 850 °C 5 h results in good yield from surficial GaN which was grown on sapphire and Si substrates. Surface morphology revealed nanorod...

We report a facile method to fabricate highly sensitive superhydrophobic Ag nanorods (AgNR) arrays based surface enhanced fluorescence spectroscopy (SEFS) substrates using glancing angle deposition technique at substrate temperature of 133 K and then subsequent coating heptadecafluoro-1-decanethiol (HDFT) molecules. The SEFS enhancement behaviour these was determined by aqueous solution Rhodamine 6G. HDFT coated AgNR exhibit more 3-fold signal than conventional films. These sensors may find...

Abstract Highly reflective and surface conductive strain gauges have been prepared by embedding the silver nanorods (AgNRs) into polydimethylsiloxane (PDMS). Thermal curing of PDMS on AgNRs grown Si wafer leads to a flexible, surface. The reflectance as films were observed be 60% with low value sheet resistance. film was able tuned from 15% in visible region. fabrication parallel plate capacitor sensor embedded PDMS, tuning capacitance respect applied strain, gauge factor ~1. These...

We report the fabrication of superhydrophobic Ag nanorods substrate using glancing angle deposition (GLAD) technique. The effect temperature on contact was explored. SEM images clearly confirms difference in morphology grown at varying ranging from 313 K to 133 which affects roughness and surface density nanostructures formed. have controlled size gap obtain higher reduced energy by heptadecafluoro-1-decanethiol (HDFT) achieve above 150°. measured CA uncoated substrates 107.1 ± 3° 134.8 2.5°...

In this work, we demonstrate surface plasmon (SP) excitations by white light irradiation on Ag nanorod covered diffraction grating substrates. Recordable digital versatile discs (DVD) were used as the substrates which aligned nanorods arrays deposited oblique angle deposition. A simple experimental method based normal incidence optical transmission was to monitor first order spectra from these DVD gratings. The SP peak positions observed have dependence polarization of incident and get...

The dynamics of evaporating water droplets on heated graphene–poly(dimethylsiloxane) (PDMS) composites is investigated experimentally and theoretically. By inserting graphene nucleates in PDMS, we report the effect change thermal resistance evaporation process graphene–PDMS composite surface. dispersing within PDMS matrix, enhanced. nucleate density over surface was controlled by varying wt % from 0 to 2%, which turn controls hence rate. Experimentally, maximum rate 0.0044 μL/s observed for...

Abstract Tunable nanoplasmonic metasurfaces have resulted in many versatile platforms for sensing applications including surface‐enhanced Raman scattering (SERS)‐based detection. However, to date, their fabrication still faces challenges uniformity, repeatability, and controllability. Here, a novel large‐area hierarchical array with controlled internal structure tunable plasmonic properties is reported, relying on controllably tailoring the single nanosphere uniform double‐layered into...

We report a cost effective and facile way to synthesize flexible, transparent conductor using oblique angle deposition (OAD). A flexible Ag islands film with transmittance of 28.02 % at 550 nm is obtained only one step on Polydimethylsiloxane (PDMS) substrate before stretching. The transperacy the increased upto 35.29 under tensile strain 40 %. As an application, these stretchable, conductive films can be used as electrodes, capacitive pressure sensors for mechanically compliant...

In article number 1900345, Xiangjiang Liu, Longhua Tang, and co-workers demonstrate a method to generate large area uniform nanoflower array with well-defined petal shape. The double-layered nanospheres are innovatively used as mask an etched substrate, controllable tailoring is achieved by adjusting the etching degree sputtering thickness. arrays show tunable optical surface-enhanced Raman scattering enhancement effects.