TY  - JOUR
AU  - Roy, Colin
AU  - Branković, Zorica
AU  - Rostovtsev, Yuri
PY  - 2022
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1565
AB  - We have developed and demonstrated a new mechanism of manipulation of population
in molecular rotational levels in a weakly aligned molecules. The mechanism is based on
an adiabatically changing electric field interacting with the molecules with dipole moments.
Treating molecules as simple rotators, we have described their behavior using the density matrix
taking into account the relaxation processes. We have considered the interaction of the weakly
aligned molecules with a microwave field in a high finesse cavity. We have found that, on one
hand, the population inversion can be reached in the ensemble of the weakly aligned molecules
to be used for the maser operation at room temperature. On the another hand, we have found
that the enhancement of the absorption can reach the theoretical limit and be used for gas
sensing with high sensitivity and selectivity. Such sensors can efficiently analyze the multi-gas
mixtures and be used for a huge range of applications – stretching from technology, sciences,
control of environment, biology and medicine.
PB  - IOP Publishing
T2  - Journal of Physics: Conference Series
T1  - Weakly Aligned Molecules: From Molecular Detectors to Room-Temperature Tunable Masers
IS  - 1
SP  - 012001
VL  - 2249
DO  - 10.1088/1742-6596/2249/1/012001
ER  - 

@article{
author = "Roy, Colin and Branković, Zorica and Rostovtsev, Yuri",
year = "2022",
abstract = "We have developed and demonstrated a new mechanism of manipulation of population
in molecular rotational levels in a weakly aligned molecules. The mechanism is based on
an adiabatically changing electric field interacting with the molecules with dipole moments.
Treating molecules as simple rotators, we have described their behavior using the density matrix
taking into account the relaxation processes. We have considered the interaction of the weakly
aligned molecules with a microwave field in a high finesse cavity. We have found that, on one
hand, the population inversion can be reached in the ensemble of the weakly aligned molecules
to be used for the maser operation at room temperature. On the another hand, we have found
that the enhancement of the absorption can reach the theoretical limit and be used for gas
sensing with high sensitivity and selectivity. Such sensors can efficiently analyze the multi-gas
mixtures and be used for a huge range of applications – stretching from technology, sciences,
control of environment, biology and medicine.",
publisher = "IOP Publishing",
journal = "Journal of Physics: Conference Series",
title = "Weakly Aligned Molecules: From Molecular Detectors to Room-Temperature Tunable Masers",
number = "1",
pages = "012001",
volume = "2249",
doi = "10.1088/1742-6596/2249/1/012001"
}

Roy, C., Branković, Z.,& Rostovtsev, Y.. (2022). Weakly Aligned Molecules: From Molecular Detectors to Room-Temperature Tunable Masers. in Journal of Physics: Conference Series
IOP Publishing., 2249(1), 012001.
https://doi.org/10.1088/1742-6596/2249/1/012001

Roy C, Branković Z, Rostovtsev Y. Weakly Aligned Molecules: From Molecular Detectors to Room-Temperature Tunable Masers. in Journal of Physics: Conference Series. 2022;2249(1):012001.
doi:10.1088/1742-6596/2249/1/012001 .

Roy, Colin, Branković, Zorica, Rostovtsev, Yuri, "Weakly Aligned Molecules: From Molecular Detectors to Room-Temperature Tunable Masers" in Journal of Physics: Conference Series, 2249, no. 1 (2022):012001,
https://doi.org/10.1088/1742-6596/2249/1/012001 . .

TY  - JOUR
AU  - Branković, Zorica
AU  - Rostovtsev, Yuri
PY  - 2020
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1303
AB  - Air quality control is an important task in prevention of human exposure to toxic and harmful gases and requires reliable gas sensors. During last decades many gas sensing mechanisms, based on different physical or chemical interactions with sensitive materials, have been developed, but the problem of precise analysis of gas mixtures still remains. The problem can be solved by introducing new sensing mechanism based on an adiabatically changing electric field interacting with the rotational structure of the molecules with dipole moments. We have theoretically demonstrated a single low frequency gas detector that can be used for sensing of gas mixtures with high selectivity, accuracy, and sensitivity. The enhancement of the population difference between corresponding molecular levels and reached the theoretical maximum of absorption have been shown.
PB  - Nature Publishing Group, London
T2  - Scientific Reports
T1  - A resonant single frequency molecular detector with high sensitivity and selectivity for gas mixtures
IS  - 1
VL  - 10
DO  - 10.1038/s41598-020-58473-x
ER  - 

@article{
author = "Branković, Zorica and Rostovtsev, Yuri",
year = "2020",
abstract = "Air quality control is an important task in prevention of human exposure to toxic and harmful gases and requires reliable gas sensors. During last decades many gas sensing mechanisms, based on different physical or chemical interactions with sensitive materials, have been developed, but the problem of precise analysis of gas mixtures still remains. The problem can be solved by introducing new sensing mechanism based on an adiabatically changing electric field interacting with the rotational structure of the molecules with dipole moments. We have theoretically demonstrated a single low frequency gas detector that can be used for sensing of gas mixtures with high selectivity, accuracy, and sensitivity. The enhancement of the population difference between corresponding molecular levels and reached the theoretical maximum of absorption have been shown.",
publisher = "Nature Publishing Group, London",
journal = "Scientific Reports",
title = "A resonant single frequency molecular detector with high sensitivity and selectivity for gas mixtures",
number = "1",
volume = "10",
doi = "10.1038/s41598-020-58473-x"
}

Branković, Z.,& Rostovtsev, Y.. (2020). A resonant single frequency molecular detector with high sensitivity and selectivity for gas mixtures. in Scientific Reports
Nature Publishing Group, London., 10(1).
https://doi.org/10.1038/s41598-020-58473-x

Branković Z, Rostovtsev Y. A resonant single frequency molecular detector with high sensitivity and selectivity for gas mixtures. in Scientific Reports. 2020;10(1).
doi:10.1038/s41598-020-58473-x .

Branković, Zorica, Rostovtsev, Yuri, "A resonant single frequency molecular detector with high sensitivity and selectivity for gas mixtures" in Scientific Reports, 10, no. 1 (2020),
https://doi.org/10.1038/s41598-020-58473-x . .