Application Notes: General

Spectral measurements down to 153 nm can be achieved easily and economically with the high-sensitivity Maya2000 Pro with Extra-Deep-UV Option. Nitrogen purging of the spectrometer helps to mitigate water and oxygen absorption in the vacuum ultraviolet.

Semiconductor quantum dots (QDs) can be used as nonclassical light sources with applications in next-generation quantum communication and computing. Electrically pumped QDs are all solid-state sources of single photons that are not limited by Poisson statistics (1). Recent work by the group of Dieter Bimberg at Technische Universität-Berlin has demonstrated the selective pumping of a single InAs QD with emission from a single exciton (1–3).

The factors that affect the long-term stability of ICP instruments are discussed and details of the performance of the Thermo Scientific iCAP 6000 Series for extended period analyses are given.

The availability of new silicon drift detectors (SDD) allows for more precise measurements in less acquisition time. SDDs are often praised for their excellent energy resolution, but it is their increased throughput that make them ideal for many industrial applications. Due to the detector's smaller capacitance, a much shorter peaking time is used in the shaping amplifier without sacrificing resolution. This dramatically increases the throughput of the system. Compared with a conventional Si-PIN detector where the peaking time is as long as 25 ms, the drift detector operates at 1.6 ms, thereby increasing throughput from 10,000 counts per second to over 100,000. This advantage can be used in two primary ways.

Ocean Optics, Inc.

Applied Biosystems/MDS SCIEX

Biotools, Inc.

PerkinElmer, Inc.

Retsch, Inc.

Thermo Fisher Scientific

Thermo Fisher Scientific

Amptek, Inc.

PIKE Technologies, Inc.

HORIBA Jobin Yvon, Inc.

Bruker Optics