Zobrazeno 1 - 10
of 24
pro vyhledávání: '"K. Sigfrid Yngvesson"'
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 58:1140-1150
This paper presents a detailed study of the IF properties of phonon-cooled NbN hot electron bolometer (HEB) terahertz mixers and receivers, performed over the widest intermediate frequency range reported so far. First, a broadband technique is used t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7d21f43fed3493e10aa88b89d213a12a
https://doi.org/10.1109/tmtt.2010.2045566
https://doi.org/10.1109/tmtt.2010.2045566
Publikováno v:
The Journal of Physical Chemistry B. 113:8930-8940
The effect of microwave power magnitude and pulsing frequency on the synthesis enhancement of zeolites, silicoaluminophosphate SAPO-11, silicalite, and NaY, was studied. Pulsing the microwave power compared to continuous delivery at the same averaged
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bdb686cc5d7a05f844cdd4bbb9dc2095
https://doi.org/10.1021/jp900400d
https://doi.org/10.1021/jp900400d
Autor:
K. Sigfrid Yngvesson, Fan Lu, Murad Gharibeh, Geoffrey A. Tompsett, W. C. Conner, Scott M. Auerbach
Publikováno v:
The Journal of Physical Chemistry B. 113:12506-12520
While microwave enhancement of chemical syntheses has been demonstrated for a broad variety of chemical reactions, there is no accepted universal mechanism. Is the enhancement due to more efficient heating, to overheating, to nonuniform heating, or t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3b1963504800c18d85dfbb2f5fdff903
https://doi.org/10.1021/jp900394u
https://doi.org/10.1021/jp900394u
Publikováno v:
The Journal of Physical Chemistry B. 108:13913-13920
Studies in the past decade suggest that microwave energy may have a unique ability to influence chemical processes. These include chemical and materials syntheses as well as separations. Specifically, recent studies have documented significantly redu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::519331215986115a82bbd36b34c08292
https://doi.org/10.1021/jp037358c
https://doi.org/10.1021/jp037358c
Publikováno v:
AIChE Journal. 46:758-768
The influence of microwave radiation on adsorption selectivity was studied using the adsorption and desorption of cyclohexane and methanol on high-silica zeolites. The amount of microwave energy absorbed depends on the specific system of adsorbent an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2e281af6acfd14a2765b2b604d11fbda
https://doi.org/10.1002/aic.690460410
https://doi.org/10.1002/aic.690460410
Publikováno v:
Chemphyschem : a European journal of chemical physics and physical chemistry. 9(17)
AlPO-11 and SAPO-11 are synthesized using microwave heating. The effects of precursor volume, reaction temperature, reactor geometry, stirring, applicator type and frequency on the microwave synthesis of SAPO-11 and AlPO-11 are studied. The nucleatio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::cd742db104a15b47521faa0bef010154
https://pubmed.ncbi.nlm.nih.gov/19034925
https://pubmed.ncbi.nlm.nih.gov/19034925
Publikováno v:
The journal of physical chemistry. B. 111(44)
The enhancement of synthesis reactions under microwave heating is dependent on many complex factors. We investigated the importance of several reaction engineering parameters relevant to microwave synthesis. Of interest to this investigation were the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::316309c6e87b121e2ab6c4dfafe14350
https://pubmed.ncbi.nlm.nih.gov/17939703
https://pubmed.ncbi.nlm.nih.gov/17939703
Publikováno v:
Chemphyschem : a European journal of chemical physics and physical chemistry. 7(2)
Studies in the last decade suggest that microwave energy may have a unique ability to influence chemical processes. These include chemical and materials syntheses as well as separations. Specifically, recent studies have documented a significantly re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2e92264f0e581c3f40db5c9265c53538
https://pubmed.ncbi.nlm.nih.gov/16463324
https://pubmed.ncbi.nlm.nih.gov/16463324
Autor:
K. Sigfrid Yngvesson
Publikováno v:
SPIE Proceedings.
Hot electron bolometric (HEB) detectors and mixers for the THz frequency range, which use thin-film superconductors, have been developed recently. They have short response times due to efficient cooling of ht hot electrons by either (i) phonon transm
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cf4410748b43879a4011ef6c9a7dd100
https://doi.org/10.1117/12.422142
https://doi.org/10.1117/12.422142
Autor:
M. Ji, Thomas M. Goyette, Jerry Waldman, K. Sigfrid Yngvesson, Yan Zhuang, C. F. Musante, Eyal Gerecht
Publikováno v:
SPIE Proceedings.
HEB technology continues to extend the sate-of-the-art for THz low-noise receivers. This talk discusses recent measured noise temperatures for NbN HEB receivers form which we infer intrinsic noise temperatures which approach the quantum noise limit w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::be0a50563ecc2e4be53f09199ca4aeea
https://doi.org/10.1117/12.422141
https://doi.org/10.1117/12.422141