Scanning probe microscopies (SPM) and cantilever-based sensors generally use low-frequency mechanical devices of microscale dimensions or larger. Almost universally, off-chip methods are used to sense displacement in these devices, but this approach is not suitable for nanoscale devices. Nanoscale mechanical sensors offer a greatly enhanced performance that is unattainable with microscale devic...

The potential use of nanotechnology for hyperspectral (HS) and multispectral (MS) sensing and imaging is described in this article. It is noted how HS and MS sensors/imagers have great potential for a variety of applications important to the intelligence community; such applications range from monitoring chemical-agent production to identifying geographical terrain. It is also noted that, by se...

Combining and analyzing efficiently the information incoming from a large number of sensors is essential for developing the Internet of Things. However, data incoming from sensors is usually transmitted to external processors for analysis, which is costly in terms of energy. Using nanoscale devices to analyze sensory data would allow building small sensory processing units on the sensor itself....

We demonstrate a new, versatile class of nanoscale chemical sensors based on single-stranded DNA (ss-DNA) as the chemical recognition site and single-walled carbon nanotube field effect transistors (swCN-FETs) as the electronic read-out component. swCN-FETs with a nanoscale coating of ss-DNA respond to gas odors that do not cause a detectable conductivity change in bare devices. Responses of ss...

Rotations of microscale rigid bodies exhibit pronounced quantum phenomena that do not exist for their centre-of-mass motion. By levitating nanoparticles in ultra-high vacuum, researchers are developing a promising platform observing and exploiting these effects an unexplored mass size regime. Recent experimental theoretical breakthroughs demonstrate exquisite control nanoscale rotations, settin...

Nanoscale gaps, which enable many research applications in fields such as chemical sensors, single-electron transistors, and molecular switching devices, have been extensively investigated over the past decade and have witnessed the evolution of related technologies. Importantly, nanoscale gaps employed in hydrogen-gas (H(2)) sensors have been used to reversibly detect H(2) in an On-Off manner,...

Semiconductor nanowires and other semiconducting nanoscale materials configured as field-effect transistors have been studied extensively as biological/chemical (bio/chem) sensors. These nanomaterials have demonstrated high-sensitivity from one- and two-dimensional sensors, although the realization of the ultimate pointlike detector has not been achieved. In this regard, nanoscale p-n diodes ar...

In this paper, a new refractive index sensor based on Fano resonance is introduced. It mainly composed of two parts: metal–insulator–metal as base waveguide and an annular resonant cavity with double notch convex circle coupling structure. The sensing characteristics the design are investigated via finite element calculations. influence remaining structure parameters system’s performance relati...

Nanofluidic devices make use of molecular-level forces and phenomena to increase their density, speed and accuracy. However, fabrication is challenging, because dissimilar materials need to be integrated in three dimensions with nanoscale precision. Here, we report a three-dimensional nanoscale liquid glass electrode made from monolithic substrates without conductive materials by femtosecond-la...