Matches in SemOpenAlex for { <https://semopenalex.org/work/W2895952945> ?p ?o ?g. }
Showing items 1 to 88 of
88
with 100 items per page.
- W2895952945 abstract "Attempts on the selective promotion of diamond growth were investigated by deploying laser-assisted vibrational excitation of reactant molecules, which deposits energy selectively into specific molecules and activate the molecules towards the selected reaction pathways. Laser-assisted combustion chemical vapor deposition (CVD) of diamond was studied using a wavelength-tunable CO2 laser. The CH2-wagging mode (υ7, at 949.3 cm-1) of ethylene precursor molecules is strongly infrared active and perfectly matches the emission line of the CO2 laser at 10.532 µm. On- and off-resonance excitations of molecules were performed via tuning the incident laser wavelengths centered at 10.532 µm. With the same amount of laser power absorbed, the on-resonance vibrational excitation allowed a largest fraction of the absorbed laser energy coupled directly into C2H4 molecules whereas energy coupling under off-resonance excitations is less efficient in influencing the combustion process. The diamond deposition rate was enhanced by a factor of 5.7 accompanied with an improvement of diamond quality index under the on-resonance excitation at 10.532 µm. The flame shape variation indicate that the resonant vibrational excitation is an efficient route coupling energy into the reactant molecules to surmount the chemical reaction barrier and steering the combustion process to favor the diamond formation. Mass spectrometry was performed to study the chemical species in the flame, which suggests that hydrocarbons-related species were selectively enhanced while etchant species were suppressed with resonant laser excitations.Attempts on the selective promotion of diamond growth were investigated by deploying laser-assisted vibrational excitation of reactant molecules, which deposits energy selectively into specific molecules and activate the molecules towards the selected reaction pathways. Laser-assisted combustion chemical vapor deposition (CVD) of diamond was studied using a wavelength-tunable CO2 laser. The CH2-wagging mode (υ7, at 949.3 cm-1) of ethylene precursor molecules is strongly infrared active and perfectly matches the emission line of the CO2 laser at 10.532 µm. On- and off-resonance excitations of molecules were performed via tuning the incident laser wavelengths centered at 10.532 µm. With the same amount of laser power absorbed, the on-resonance vibrational excitation allowed a largest fraction of the absorbed laser energy coupled directly into C2H4 molecules whereas energy coupling under off-resonance excitations is less efficient in influencing the combustion process. The diamond deposition rate was enhance..." @default.
- W2895952945 created "2018-10-26" @default.
- W2895952945 creator A5031764247 @default.
- W2895952945 creator A5043811212 @default.
- W2895952945 creator A5045611560 @default.
- W2895952945 creator A5047739331 @default.
- W2895952945 creator A5065149012 @default.
- W2895952945 creator A5079066467 @default.
- W2895952945 creator A5088919476 @default.
- W2895952945 date "2014-01-01" @default.
- W2895952945 modified "2023-09-27" @default.
- W2895952945 title "On- and off-resonance vibrational excitations of ethylene molecules in laser-assisted combustion diamond synthesis" @default.
- W2895952945 doi "https://doi.org/10.2351/1.5063017" @default.
- W2895952945 hasPublicationYear "2014" @default.
- W2895952945 type Work @default.
- W2895952945 sameAs 2895952945 @default.
- W2895952945 citedByCount "0" @default.
- W2895952945 crossrefType "proceedings-article" @default.
- W2895952945 hasAuthorship W2895952945A5031764247 @default.
- W2895952945 hasAuthorship W2895952945A5043811212 @default.
- W2895952945 hasAuthorship W2895952945A5045611560 @default.
- W2895952945 hasAuthorship W2895952945A5047739331 @default.
- W2895952945 hasAuthorship W2895952945A5065149012 @default.
- W2895952945 hasAuthorship W2895952945A5079066467 @default.
- W2895952945 hasAuthorship W2895952945A5088919476 @default.
- W2895952945 hasConcept C105923489 @default.
- W2895952945 hasConcept C113196181 @default.
- W2895952945 hasConcept C119599485 @default.
- W2895952945 hasConcept C120665830 @default.
- W2895952945 hasConcept C121332964 @default.
- W2895952945 hasConcept C127413603 @default.
- W2895952945 hasConcept C133033976 @default.
- W2895952945 hasConcept C139210041 @default.
- W2895952945 hasConcept C147789679 @default.
- W2895952945 hasConcept C178790620 @default.
- W2895952945 hasConcept C184779094 @default.
- W2895952945 hasConcept C185592680 @default.
- W2895952945 hasConcept C192562407 @default.
- W2895952945 hasConcept C24123453 @default.
- W2895952945 hasConcept C2776921476 @default.
- W2895952945 hasConcept C32909587 @default.
- W2895952945 hasConcept C520434653 @default.
- W2895952945 hasConcept C83581075 @default.
- W2895952945 hasConceptScore W2895952945C105923489 @default.
- W2895952945 hasConceptScore W2895952945C113196181 @default.
- W2895952945 hasConceptScore W2895952945C119599485 @default.
- W2895952945 hasConceptScore W2895952945C120665830 @default.
- W2895952945 hasConceptScore W2895952945C121332964 @default.
- W2895952945 hasConceptScore W2895952945C127413603 @default.
- W2895952945 hasConceptScore W2895952945C133033976 @default.
- W2895952945 hasConceptScore W2895952945C139210041 @default.
- W2895952945 hasConceptScore W2895952945C147789679 @default.
- W2895952945 hasConceptScore W2895952945C178790620 @default.
- W2895952945 hasConceptScore W2895952945C184779094 @default.
- W2895952945 hasConceptScore W2895952945C185592680 @default.
- W2895952945 hasConceptScore W2895952945C192562407 @default.
- W2895952945 hasConceptScore W2895952945C24123453 @default.
- W2895952945 hasConceptScore W2895952945C2776921476 @default.
- W2895952945 hasConceptScore W2895952945C32909587 @default.
- W2895952945 hasConceptScore W2895952945C520434653 @default.
- W2895952945 hasConceptScore W2895952945C83581075 @default.
- W2895952945 hasLocation W28959529451 @default.
- W2895952945 hasOpenAccess W2895952945 @default.
- W2895952945 hasPrimaryLocation W28959529451 @default.
- W2895952945 hasRelatedWork W1509023352 @default.
- W2895952945 hasRelatedWork W185875750 @default.
- W2895952945 hasRelatedWork W1872837539 @default.
- W2895952945 hasRelatedWork W1979627569 @default.
- W2895952945 hasRelatedWork W1987564799 @default.
- W2895952945 hasRelatedWork W1989580028 @default.
- W2895952945 hasRelatedWork W1993375313 @default.
- W2895952945 hasRelatedWork W2016174784 @default.
- W2895952945 hasRelatedWork W2027665274 @default.
- W2895952945 hasRelatedWork W2029202810 @default.
- W2895952945 hasRelatedWork W2035871842 @default.
- W2895952945 hasRelatedWork W2052166139 @default.
- W2895952945 hasRelatedWork W2062567472 @default.
- W2895952945 hasRelatedWork W2082278014 @default.
- W2895952945 hasRelatedWork W2091786067 @default.
- W2895952945 hasRelatedWork W2112490365 @default.
- W2895952945 hasRelatedWork W2165155770 @default.
- W2895952945 hasRelatedWork W2086317562 @default.
- W2895952945 hasRelatedWork W2091834567 @default.
- W2895952945 hasRelatedWork W301444046 @default.
- W2895952945 isParatext "false" @default.
- W2895952945 isRetracted "false" @default.
- W2895952945 magId "2895952945" @default.
- W2895952945 workType "article" @default.