A previously healthy 26-year-old woman developed hemorrhagic alveolitis and adult respiratory distress syndrome (ARDS) following use of a hydrofluoric acid-containing household cleaning agent. Exposure was inhalational in nature. The circumstances and possible mechanism of chemical pneumonitis from low-dose inhalational exposure to hydrofluoric acid are discussed.

A comparative study of chemical cleaning Aneesh Nainani, Yun Sun, Toshifumi Irisawa, Ze Yuan, Masaharu Kobayashi, Piero Pianetta, Brian. R. Bennett, J. Brad Boos, and Krishna C. Saraswat Center for Integrated Systems, Department of Electrical Engineering, Stanford University, Stanford, California 94305, USA Stanford Synchrotron Radiation Lightsource, Menlo Park, California 94025, USA Naval Rese...

In a single wafer processing, it is crucial to predict and control liquid film flow flowing over the rotating disk chemical solution concentration distribution achieve efficient cleaning. This study numerically obtained of cleaning on using open-source program, OpenFOAM. We prevented numerical diffusion from gas by incorporating conservative scheme into mass transport equation. The surface etch...

Over the past two years, Hamilton Standard Space Systems International (HSSSI) has had an active program underway to identify, evaluate and design a non-ozone depleting chemical (ODC) based precision cleaning process for spaceflight hardware. This paper outlines the various elements and findings of this program which has culminated in the design of a non-ODC based precision cleaning process. Th...

Ultra-violet protection and self-cleaning action of nano zinc oxide (ZnO) and titanium di-oxide (TiO2) with acrylic binder has been assessed on the cotton fabric using pad-dry-cure method. Different precursors, such as zinc acetate and titanium tetrachloride have been used to synthesize nanoparticles. Zinc acetate is synthesized into nanoparticle by wet chemical technique and titanium tetrachlo...

The effect of cleaning the surface of single-walled carbon nanotube (SWNT) networks by thermal and the O₂ plasma treatments is presented in terms of NH₃ gas sensing characteristics. The goal of this work is to determine the relationship between the physicochemical properties of the cleaned surface (including the chemical composition, crystal structure, hydrophilicity, and impurity content) and ...

Bio-inspired self-cleaning surfaces have found industrial applications in oil–water separation, stain resistant textiles, anti-biofouling paints in ships etc. Interestingly, self-cleaning metal–organic framework (MOF) materials having high water contact angles and corrosion resistance have not been realized so far. To address this issue, we have used the fundamentals of self-assembly to expose ...

Background Bonding to silica-based ceramics requires micro mechanical (hydrofluoric-acid, HFetching) and chemical (silane) coupling [1–5]. The HF-etching provides dissolution of Abstract Statement of problem: The hydrofluoric acid (HF) is able to promote selective dissolution of the glassy phase in silica-based ceramic. However, the etching leaves insoluble silica-fluoride salts in the surface ...

In situ chemical methods for preparing atomically-clean surfaces of Si3N4 thin films in ultra-high vacuum (UHV) have been studied using X-ray and ultraviolet photoemission, electron energy loss and Auger electron spectroscopies. Prior to the UHV studies, the films (grown ex situ on Si(1 0 0) wafers by low-pressure chemical vapor deposition) were characterized using primarily infrared reflection...