Engineering topics
Lam, R.
Publications and source records attributed to Lam, R..
Early time dynamics of laser-ablated silicon using ultrafast grazing incidence X-ray scattering
Controlling the morphology of laser-derived nanomaterials is dependent on developing a better understanding of the particle nucleation dynamics in the ablation plume. Here in this paper, we utilize the femtosecond-length pulses from an x-ray free electron laser to perform time-resolved grazing incidence x-ray scattering measurements on a laser-produced silicon plasma plume. At 20 ps we observe a dramatic increase in the scattering amplitude at small scattering vectors, which we attribute to incipient formation of liquid silicon droplets. These results demonstrate the utility of XFELs as a tool for characterizing the formation dynamics of nanomaterials in laser-produced plasma plumes on ultrafast timescales.
Tuning Procedures for SLAC Rectangular Waveguide Components
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Real-time non-invasive eyetracking and gaze-point determination for human-computer interaction and biomedicine
Eyetracking is one of the latest technologies that has shown potential in several areas including human-computer interaction for people with and without disabilities, and for noninvasive monitoring, detection, and even diagnosis of physiological and neurological problems in individuals.
Real-time non-invasive eyetracking and gaze-point determination for human-computer and biomedicine
We propose a new non-invasive visual eyetracking system that is capable of operating at speeds as high as 6-12 KHz.
Resource Scheduling for a Network of Communications Antennas
This paper describes tha Demand Access Network Scheduler (DANS) system for automatically scheduling and rescheduling resources for a network of communication antennas. DANS accepts a baseline schedule and supports rescheduling of antenna and subsystem resources to satisfy tracking goals in the event of changing track requests, equipment outages, and inclement weather.
Robust, Multi-layered Plan Execution and Revision for Operation of a Network of Communication Antennas
This paper describes a hierarchical scheduling, planning, control, and execution monitoring architecture for automating operations of a worldwide network of communications antennas. The purpose of this paper is to describe an architecture for automating the process of capturing spacecraft data.