A new device for stopping or reducing potentially irritating or harmful emissions from surfaces indoors is described. The device is a surface emissions trap prototype and consists of an adsorbent sheet with a semipermeable barrier surrounded by two thin nonwoven layers. The trap may be applied directly at the source of the emissions e.g. at moisture-affected floors and walls, surfaces contamina...

In the last decades an important number of research papers published on nano chip electrode and cathode electrochromic materials. Tantalum (Ta) with so high melting point can be as a good candidate for the future of nano chip devices. However, its surface has not enough trap centers and/or occupation states, so nitrogen ions exposed on Ta surafce, may solve this problem. For this purpose, in th...

A transmission-type light-trap silicon radiometer has been developed to hold the NIST spectral power and irradiance responsivity scales between 406 nm and 920 nm. The device is built from replaceable input apertures and tightly packed different-size silicon photodiodes. The photodiodes are positioned in a triangular shape tunnel such that beam clipping is entirely eliminated within an 8 field-o...

We report on the present state of commissioning of the cryogenic electrostatic trap for fast ion beams (CTF) at the Max-Planck-Institut für Kernphysik in Heidelberg. The device has recently passed a cryogenic test, during which the trap was cooled down by 1.8 K superfluid helium. No leaks of the helium supply system were observed, the temperature below 10 K was reached, and the required positio...

The radiofrequency quadrupole linear ion trap is a widely used device in physics and chemistry. When used for trapping of large ion clouds, the presence of anharmonic terms in the radiofrequency potential limits the total number of stored ions. In this paper, we have studied the anharmonic content of the trapping potential for different implementations of a quadrupole trap, searching for the ge...

The transient properties of single grain–thin film transistors SG-TFTs with high electron mobility have been studied. Overshoot current induced by trap states has been observed in most of the devices. A method of ac measurements has been used to investigate the trap processes. Both transient and ac measurements show that the response of some SG-TFTs with high field effect mobility is dominated ...

Trapping and manipulation of microscale and nanoscale particles is demonstrated using the sole action of hydrodynamic forces. We developed an automated particle trap based on a stagnation point flow generated in a microfluidic device. The hydrodynamic trap enables confinement and manipulation of single particles in low viscosity (1-10 cP) aqueous solution. Using this method, we trapped microsca...

Cell ‘trap and release’ in microfluidic devices is critical for on-chip concentration purposes and dynamic microarrays. However, most existing mechanical trapping modalities lack release capabilities and some employ very complex or abrasive trapping mechanisms. Here we describe a novel cell ‘trap and release’ device, which employs principles similar to the ‘hydraulic jump’ phenomenon in nature....

Proper analytical physically based model to predict fluctuations in the threshold voltage due to a single interface trap at a random location along the channel in a typical sub-50 nm MOSFET is of utmost significance. This research summary compares the efficacy of the existing analytical model based on dopant number fluctuation estimation in the channel of a MOSFET when compared to 3D Ensemble M...

The design and performance of an ion trap storage-reflectron time-of-flight mass spectrometer (IT-RETOF MS) combination have been explored for detection of ions generated from both internal and external ionization sources. Ions were generated inside the trap using laser-induced resonance enhanced multiphoton ionization at 266 nm, while ions were generated external to the trap using either an at...