Results 41 to 50 of about 254,154 (222)
Depositional ice nucleation on solid ammonium sulfate and glutaric acid particles [PDF]
, 2009 Heterogeneous ice nucleation on solid ammonium sulfate and glutaric acid particles was studied using optical microscopy and Raman spectroscopy. Optical microscopy was used to detect selective nucleation events as water vapor was slowly introduced into an
K. J. Baustian +2 more
core +3 more sources
The State of CO and CO2 Ices in the Kuiper Belt as Seen by JWST
The Planetary Science Journal, 2023 JWST has shown that CO _2 and CO are common on the surfaces of objects in the Kuiper Belt and have apparent surface coverages even higher than that of water ice, though water ice is expected to be significantly more abundant in the bulk composition ...
Michael E. Brown, Wesley C. Fraser
doaj +1 more source
CO$_2$ Infrared Phonon Modes in Interstellar Ice Mixtures
, 2016 CO$_2$ ice is an important reservoir of carbon and oxygen in star and planet forming regions. Together with water and CO, CO$_2$ sets the physical and chemical characteristics of interstellar icy grain mantles, including desorption and diffusion energies
Cooke, Ilsa R. +2 more
core +1 more source
Adsorption Science & Technology, 1999 The 1 H NMR spectroscopy of frozen suspensions has been used to investigate the hydrate shells of Agl, fluoroglucin (FG) and dioxynaphthalenes (DON). It has been shown that the ice formation activity (IFA) of the above compounds may be correlated with ...
V.V. Turov, A.V. Turov, A.V. Arkharov
doaj +1 more source
NMR characterizations of the ice binding surface of an antifreeze protein. [PDF]
PLoS ONE, 2010 Antifreeze protein (AFP) has a unique function of reducing solution freezing temperature to protect organisms from ice damage. However, its functional mechanism is not well understood.
Jiang Hong +5 more
doaj +1 more source
Boron Nitride Nanomesh: A template for Nano-ice
, 2009 Using variable temperature scanning tunneling microscopy and dI/dz barrier height spectroscopy, the structure of water on h-BN/Rh(111) nanomesh has been investigated. Below its desorption temperature, two distinct phases of water self-assemble within the
Berner +21 more
core +2 more sources
The Astrophysical JournalWe present laboratory spectra of pure amorphous and crystalline H _2 O ices in the near-infrared (NIR, 1–2.5 μ m/10,000–4000 cm ^−1 ) at 80–180 K.
Christina M. Tonauer +10 more
doaj +1 more source
Cold gas as an ice diagnostic toward low mass protostars
, 2009 Up to 90% of the chemical reactions during star formation occurs on ice surfaces, probably including the formation of complex organics. Only the most abundant ice species are however observed directly by infrared spectroscopy.
Bachiller +24 more
core +1 more source
Infrared Band Strengths of Dangling OH Features in Amorphous Water at 20 K
The Astrophysical JournalInfrared (IR) spectra of vapor-deposited amorphous water at low temperatures show two weak peaks at around 3720 and 3696 cm ^−1 assigned to free-OH stretching modes of two- and three-coordinated water molecules (so-called “dangling” OH bonds ...
Takeshi Hasegawa +5 more
doaj +1 more source
Characterization of individual ice residual particles by the single droplet freezing method: a case study in the Asian dust outflow region [PDF]
Atmospheric Chemistry and Physics, 2018 In order to better characterize ice nucleating (IN) aerosol particles in the atmosphere, we investigated the chemical composition, mixing state, and morphology of atmospheric aerosols that nucleate ice under conditions relevant for mixed-phase clouds.
A. Iwata, A. Matsuki
doaj +1 more source