City College of New York

Adsorption Surface Area and Porosity

Time-frequency distributions-a review

A review and tutorial of the fundamental ideas and methods of joint time-frequency distributions is presented. The objective of the field is to describe how the spectral content...

One-Dimensional Electrical Contact to a Two-Dimensional Material

Better Contact Along the Edge Electrical contact to graphene is normally done with metal contacts on its flat face, where there are few strong bonding sites for the metal. Wang ...

Spectral Networks and Locally Connected Networks on Graphs

Convolutional Neural Networks are extremely efficient architectures in image and audio recognition tasks, thanks to their ability to exploit the local translational invariance o...

Electromagnetic theory of enhanced Raman scattering by molecules adsorbed on rough surfaces

A theory for surface enhanced Raman scattering (SERS) is developed. Effects due to realistic surface geometry and dielectric properties are included. Three sources of enhanced R...

From Maxwell to paraxial wave optics

In this paper we are concerned with the propagation of a light beam through an inhomogeneous, isotropic medium with a possibly nonlinear index of refraction. The customary parax...

Onset of Turbulence in a Rotating Fluid

Light-scattering measurements of the time-dependent local radial velocity in a rotating fluid reveal three distinct transitions as the Reynolds number is increased, each of whic...

Dynamical instabilities and the transition to chaotic Taylor vortex flow

We have used the technique of laser-Doppler velocimetry to study the transition to turbulence in a fluid contained between concentric cylinders with the inner cylinder rotating....

Optical Kerr effect in liquids

An experimental study was undertaken to measure the optical Kerr effect (OKE) in liquids induced by picosecond laser pulses. The effects of different parameters on the dynamics ...

INFORMATION THEORY AND STIMULUS‐INDEPENDENT THOUGHT

The production of stimulus‐independent thought (e.g. fantasy and imagery) was measured as a function of the rate at which information was presented to human subjects. Informatio...