You Qiang - Academia.edu (original) (raw)
Papers by You Qiang
Bulletin of the American Physical Society, May 15, 2015
Conductivity Manipulation through Quantum Entanglement JOHN PAUL HANSEN, YOU QIANG, University of... more Conductivity Manipulation through Quantum Entanglement JOHN PAUL HANSEN, YOU QIANG, University of Idaho, HANSEN/QIANG TEAM -Modern research has shown that single atoms of n-type semiconductors can retain the entangled spin states of photons via exciton spin, due to the exchange-interaction principle. By changing the spin states of just one the excitons via photo-stimulation, both of the materials' conductivities can be altered nonlocally. In our experiment, two bulk cadmium sulphide (CdS) samples were placed in classically separated environments and then excited by two separate beams of entangled light produced in beamlike generation. Although classically isolated, both samples had simultaneous responses to a photostimulation made on just one sample. The conductivity of the excited sample was found to be proportional to that of the second sample, times a predictably fluctuating scalar. Each excited sample datum corresponds with an accuracy of 99.8% to those of the responding sample, by the scalar, and can only be predicted with respect to the responding sample resistivity. These results indicate an entangled connection of the majority of the electrons in the bulk CdS, and suggest that the conductivities of two separated bulk n-type semiconductors can become mutually dependent, and subject to nonlocal manipulation through quantum entanglement.
Bulletin of the American Physical Society, May 16, 2015
Bulletin of the American Physical Society, 2015
Submitted for the NWS15 Meeting of The American Physical Society Nano-glasses: Non crystalline ma... more Submitted for the NWS15 Meeting of The American Physical Society Nano-glasses: Non crystalline materials with the controllable atomic structures LOKENDRA KHANAL, WILLIAM ARMOUR, Univ of Idaho, JOHN MCCLOY, Washington State University, YOU QIANG, Univ of Idaho-Crystalline materials were used to make the tools in the Stone Age. Today, crystalline nanomaterials are used in steels, semiconductors, superconductors and ferromagnetic materials etc. because of their controllable micro and nanostructures (defect and chemical). Nano-glasses are the amorphous solids with the controllable nanostructures. They are prepared by consolidating the non-crystalline nanoparticles to have melt quenched glassy structures joined together by the interfacial regions with reduced density, reduced neighbor atoms and different electronic structure than the usual glasses. Nano-glasses can be made to show different properties by controlling the volume to surface ratio at the interface and changing the chemical compositions. Some of the nano-glasses e.g. Fe 90 Sc 10 possesses the ferromagnetic behavior unlike the paramagnetic melt quenched glasses. Nano-glasses also have the properties like ductility, biocompatibility and catalytically active. If we could utilize these kinds of unique properties of the nano-glasses, this may lead the nanotechnology to the new era of the materials use. In this, we will report our first try of silicon based nano-glass too.
Journal of Magnetism and Magnetic Materials, 2019
Submitted for the MAR05 Meeting of The American Physical Society Importance of specific magnetic ... more Submitted for the MAR05 Meeting of The American Physical Society Importance of specific magnetic moment and size monodispersity of magnetic nanoparticles for biomedical applications 1 YOU QIANG, Physics, University of Idaho, JOE NUTTING, JIJI ANTONY, SWETA PENDYALA, AMIT SHARMA, DANIEL MEYER-Magnetic nanoparticles with suitable biocompatible coatings are becoming increasingly important recentlt in biomedical applications. In most cases people just use nanoparticles but don't pay much attention to their magnetic properties and size effects, which could improve greatly the applications. There are very few publications dealing with underlying physics and discussing how the magnetic properties and size distribution of nanoparticles influence the applications. Most magnetic particles or beads used currently are based on ferromagnetic iron oxides with low magnetic moment and large size distribution. In this paper we will discuss the important role of high magnetic moment and monodispersity of magnetic nanoparticles from physics point review. Physics of hyperthermia treatments of nanoparticles, and biomolecule detection using Brownian rotation dynamics will be discussed in detail. As an example we will show how we produce monodispersive core-shell iron nanoparticles with ultrahigh magnetic moment and the significant results in biomedical applications.
Submitted for the NWS05 Meeting of The American Physical Society Deposited Energetic Fe Particles... more Submitted for the NWS05 Meeting of The American Physical Society Deposited Energetic Fe Particles in Co Matrix 1 DANIEL MEYER, JIJI ANTONY, AMIT SHARMA, JOE NUTTING, YOU QIANG, University of Idaho, NANOPHYSICS AND NANOMATERIALS RESEARCH TEAM-Currently the highest observed net magnetic moment of bulk FeCo alloys is roughly 2.45µ B. The application of deposited nano clusters to the problem of increasing net magnetization shows promise due to observations of novel magnetic properties exhibited by matter in the nano phase. It is known that the magnetic moment of isolated Fe clusters show a significant increase relative to the bulk value; however, as the particles are deposited, the surface cluster interaction reduces the net moment back to the bulk value. Theoretical studies indicate that by depositing the clusters within a matrix of atomic Co the free particle value can be retrieved. Using a gas aggregation cluster source, Fe particles of variable size will be energetically impacted upon a substrate at various impact angles and energies to affect the magnetic anisotropy. These Fe particles will then be layered between Co films. Using a SQUID to measure the magnetic properties of the resulting films it may be possible to observe increased magnetization.
We have studied the physical properties of iron magnetic nanoparticles (MNPs) and sulfur doped ir... more We have studied the physical properties of iron magnetic nanoparticles (MNPs) and sulfur doped iron MNPs. Both types of MNPs were synthesized under the same conditions using magnetron sputtering gas-aggregation nanocluster source. For sulfur doped particles, 5 sccm of hydrogen sulfide gas was used in the aggregation chamber where it reacts with iron and forms sulfur doped iron particles. XPS
Ferromagnetic behavior at room temperature is observed when a small percentage of non-magnetic ti... more Ferromagnetic behavior at room temperature is observed when a small percentage of non-magnetic titanium is combined with ZnO to form nanoclusters in the presence of oxygen atmospheres. The 5% Ti- doped ZnO nanocluster film is prepared at room temperature using a technique that is a combination of high pressure sputtering and aggregation. A SQUID magnetometer measures the magnetic properties of
Iron-iron oxide core shell nanoparticles for contaminant underground water treatment JIJI ANTONY,... more Iron-iron oxide core shell nanoparticles for contaminant underground water treatment JIJI ANTONY, AMIT SHARMA, SWETA PENDYALA, DANIEL MEYER, JOE NUTTING, DONALD R. BAER, CHONGMIN WANG, DAVID MCCREADY, MARK ENGELHARD AND YOU QIANG (anto4410@uidaho.edu, shar9267@uidaho.edu, pend4935@uidaho.edu, meye1677@uidaho.edu, don.baer@pnl.gov, Chongmin.Wang@pnl.gov, david.mccready@pnl.gov, mark.engelhard@pnl.gov, youqiang@uidaho.edu)
Magnetics International Conference, 2006
The new nanomaterials is synthesized by controlling independently the incident cluster size, conc... more The new nanomaterials is synthesized by controlling independently the incident cluster size, concentration and nanostructures to have a wide variety of controlled optical, electronic, magnetic, mechanical and chemical properties for many technological applications. Cluster size distribution and nanocrystalline structures have been studied by TOF, AFM, SEM and HRTEM. Magnetic properties of nanoclusters and nanocluster-assembled materials have been investigated by SQUID
Microscopy and Microanalysis, 2008
Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New M... more Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008
Bulletin of the American …, 2005
Magnetic nanoparticles in a liquid have two relaxation times, N\'{e}el, tauN\tau _{N}tauN, and Bro... more Magnetic nanoparticles in a liquid have two relaxation times, N\'{e}el, tauN\tau _{N}tauN, and Brownian relaxation, tauB\tau _{B}tauB. For particles larger than 10-20nm, tauN\tau _{N}tauN quickly becomes much larger than tauB\tau _{B}tauB and can be ignored. tauB\tau _{B}tauB is from rotation of the particle, and ...
Bulletin of the American …, 2005
Co-doped ZnO nanocluster films are prepared at room temperature under different oxygen concentrat... more Co-doped ZnO nanocluster films are prepared at room temperature under different oxygen concentrations by, our novel nanocluster system, based on a technique that is a combination of high pressure sputtering and aggregation. Magnetic properties of the cluster films are measured by ...
arXiv (Cornell University), Nov 5, 2015
Enzymes are proteins that function as biocatalysts in bioremediation. One of the major concerns i... more Enzymes are proteins that function as biocatalysts in bioremediation. One of the major concerns in environmental applications of enzymes is their short lifetime. Enzymes lose their activity due to oxidation, which results in less stability and a shorter lifetime thereby rendering them less efficient. An effective way to increase the stability, longevity, and reusability of the enzymes is to attach them to magnetic iron nanoparticles. If enzymes are attached to the magnetic iron nanoparticles then we can easily separate the enzymes from reactants or products by applying a magnetic field. With this aim, two different catabolic enzymes, trypsin and peroxidase, were attached to uniform core-shell magnetic nanoparticles (MNP's), produced in our laboratory. Our study indicates that the lifetime and activity of enzymes increases dramatically from a few hours to weeks and that MNP-Enzyme conjugates are more stable, efficient, and economical. We predict that MNPs shield the enzymes preventing them from becoming oxidized. This results in an increased lifetime of the enzymes. Because of the high magnetization (~140 emu/g) of our MNPs, nanoparticle-enzyme conjugates can efficiently be magnetically separated, making enzymes more productive. We also found that the enzyme structure plays a major role in efficient attachment of MNPs
MRS Proceedings, 1995
A beam of metal cluster ions of variable size is deposited with variable kinetic energy on a subs... more A beam of metal cluster ions of variable size is deposited with variable kinetic energy on a substrate. Mirror-like and strongly adhering films are produced on unheated substrates for sufficiently high cluster impact energies. Numerical simulations provide the physical insight why this novel technique gives different, and sometimes superior results compared to conventional methods. Several examples are presented.
In order to find a cost effective and environmentally benign technology to treat the liquid radio... more In order to find a cost effective and environmentally benign technology to treat the liquid radioactive waste into a safe and stable form for resource recycling or ultimate disposal, this study investigates the separation of radioactive elements from aqueous systems using magnetic nano-sorbents. Our current study focuses on novel magnetic nano-sorbents by attaching DTPA molecules onto the surface of double coated magnetic nanoparticles (dMNPs), and performed preliminary sorption tests using heavy metal ions as surrogates for radionuclides. The results showed that the sorption of cadmium (Cd) and lead (Pb) onto the dMNP-DTPA conjugates was fast, the equilibrium was reached in 30 min. The calculated sorption capacities were 8.06 mg/g for Cd and 12.09 mg/g for Pb. After sorption, the complex of heavy elements captured by nano-sorbents can be easily manipulated and separated from solution in less than 1 min by applying a small external magnetic field. In addition, the sorption results demonstrate that dMNP-DTPA conjugates have a very strong chelating power in highly diluted Cd and Pb solutions (1-10 μg/L). Therefore, as a simple, fast, and compact process, this separation method has a great potential in the treatment of high level waste with low concentration of transuranic elements compared tomore » tradition nuclear waste treatment. (authors)« less
Bulletin of the American Physical Society, May 15, 2015
Conductivity Manipulation through Quantum Entanglement JOHN PAUL HANSEN, YOU QIANG, University of... more Conductivity Manipulation through Quantum Entanglement JOHN PAUL HANSEN, YOU QIANG, University of Idaho, HANSEN/QIANG TEAM -Modern research has shown that single atoms of n-type semiconductors can retain the entangled spin states of photons via exciton spin, due to the exchange-interaction principle. By changing the spin states of just one the excitons via photo-stimulation, both of the materials' conductivities can be altered nonlocally. In our experiment, two bulk cadmium sulphide (CdS) samples were placed in classically separated environments and then excited by two separate beams of entangled light produced in beamlike generation. Although classically isolated, both samples had simultaneous responses to a photostimulation made on just one sample. The conductivity of the excited sample was found to be proportional to that of the second sample, times a predictably fluctuating scalar. Each excited sample datum corresponds with an accuracy of 99.8% to those of the responding sample, by the scalar, and can only be predicted with respect to the responding sample resistivity. These results indicate an entangled connection of the majority of the electrons in the bulk CdS, and suggest that the conductivities of two separated bulk n-type semiconductors can become mutually dependent, and subject to nonlocal manipulation through quantum entanglement.
Bulletin of the American Physical Society, May 16, 2015
Bulletin of the American Physical Society, 2015
Submitted for the NWS15 Meeting of The American Physical Society Nano-glasses: Non crystalline ma... more Submitted for the NWS15 Meeting of The American Physical Society Nano-glasses: Non crystalline materials with the controllable atomic structures LOKENDRA KHANAL, WILLIAM ARMOUR, Univ of Idaho, JOHN MCCLOY, Washington State University, YOU QIANG, Univ of Idaho-Crystalline materials were used to make the tools in the Stone Age. Today, crystalline nanomaterials are used in steels, semiconductors, superconductors and ferromagnetic materials etc. because of their controllable micro and nanostructures (defect and chemical). Nano-glasses are the amorphous solids with the controllable nanostructures. They are prepared by consolidating the non-crystalline nanoparticles to have melt quenched glassy structures joined together by the interfacial regions with reduced density, reduced neighbor atoms and different electronic structure than the usual glasses. Nano-glasses can be made to show different properties by controlling the volume to surface ratio at the interface and changing the chemical compositions. Some of the nano-glasses e.g. Fe 90 Sc 10 possesses the ferromagnetic behavior unlike the paramagnetic melt quenched glasses. Nano-glasses also have the properties like ductility, biocompatibility and catalytically active. If we could utilize these kinds of unique properties of the nano-glasses, this may lead the nanotechnology to the new era of the materials use. In this, we will report our first try of silicon based nano-glass too.
Journal of Magnetism and Magnetic Materials, 2019
Submitted for the MAR05 Meeting of The American Physical Society Importance of specific magnetic ... more Submitted for the MAR05 Meeting of The American Physical Society Importance of specific magnetic moment and size monodispersity of magnetic nanoparticles for biomedical applications 1 YOU QIANG, Physics, University of Idaho, JOE NUTTING, JIJI ANTONY, SWETA PENDYALA, AMIT SHARMA, DANIEL MEYER-Magnetic nanoparticles with suitable biocompatible coatings are becoming increasingly important recentlt in biomedical applications. In most cases people just use nanoparticles but don't pay much attention to their magnetic properties and size effects, which could improve greatly the applications. There are very few publications dealing with underlying physics and discussing how the magnetic properties and size distribution of nanoparticles influence the applications. Most magnetic particles or beads used currently are based on ferromagnetic iron oxides with low magnetic moment and large size distribution. In this paper we will discuss the important role of high magnetic moment and monodispersity of magnetic nanoparticles from physics point review. Physics of hyperthermia treatments of nanoparticles, and biomolecule detection using Brownian rotation dynamics will be discussed in detail. As an example we will show how we produce monodispersive core-shell iron nanoparticles with ultrahigh magnetic moment and the significant results in biomedical applications.
Submitted for the NWS05 Meeting of The American Physical Society Deposited Energetic Fe Particles... more Submitted for the NWS05 Meeting of The American Physical Society Deposited Energetic Fe Particles in Co Matrix 1 DANIEL MEYER, JIJI ANTONY, AMIT SHARMA, JOE NUTTING, YOU QIANG, University of Idaho, NANOPHYSICS AND NANOMATERIALS RESEARCH TEAM-Currently the highest observed net magnetic moment of bulk FeCo alloys is roughly 2.45µ B. The application of deposited nano clusters to the problem of increasing net magnetization shows promise due to observations of novel magnetic properties exhibited by matter in the nano phase. It is known that the magnetic moment of isolated Fe clusters show a significant increase relative to the bulk value; however, as the particles are deposited, the surface cluster interaction reduces the net moment back to the bulk value. Theoretical studies indicate that by depositing the clusters within a matrix of atomic Co the free particle value can be retrieved. Using a gas aggregation cluster source, Fe particles of variable size will be energetically impacted upon a substrate at various impact angles and energies to affect the magnetic anisotropy. These Fe particles will then be layered between Co films. Using a SQUID to measure the magnetic properties of the resulting films it may be possible to observe increased magnetization.
We have studied the physical properties of iron magnetic nanoparticles (MNPs) and sulfur doped ir... more We have studied the physical properties of iron magnetic nanoparticles (MNPs) and sulfur doped iron MNPs. Both types of MNPs were synthesized under the same conditions using magnetron sputtering gas-aggregation nanocluster source. For sulfur doped particles, 5 sccm of hydrogen sulfide gas was used in the aggregation chamber where it reacts with iron and forms sulfur doped iron particles. XPS
Ferromagnetic behavior at room temperature is observed when a small percentage of non-magnetic ti... more Ferromagnetic behavior at room temperature is observed when a small percentage of non-magnetic titanium is combined with ZnO to form nanoclusters in the presence of oxygen atmospheres. The 5% Ti- doped ZnO nanocluster film is prepared at room temperature using a technique that is a combination of high pressure sputtering and aggregation. A SQUID magnetometer measures the magnetic properties of
Iron-iron oxide core shell nanoparticles for contaminant underground water treatment JIJI ANTONY,... more Iron-iron oxide core shell nanoparticles for contaminant underground water treatment JIJI ANTONY, AMIT SHARMA, SWETA PENDYALA, DANIEL MEYER, JOE NUTTING, DONALD R. BAER, CHONGMIN WANG, DAVID MCCREADY, MARK ENGELHARD AND YOU QIANG (anto4410@uidaho.edu, shar9267@uidaho.edu, pend4935@uidaho.edu, meye1677@uidaho.edu, don.baer@pnl.gov, Chongmin.Wang@pnl.gov, david.mccready@pnl.gov, mark.engelhard@pnl.gov, youqiang@uidaho.edu)
Magnetics International Conference, 2006
The new nanomaterials is synthesized by controlling independently the incident cluster size, conc... more The new nanomaterials is synthesized by controlling independently the incident cluster size, concentration and nanostructures to have a wide variety of controlled optical, electronic, magnetic, mechanical and chemical properties for many technological applications. Cluster size distribution and nanocrystalline structures have been studied by TOF, AFM, SEM and HRTEM. Magnetic properties of nanoclusters and nanocluster-assembled materials have been investigated by SQUID
Microscopy and Microanalysis, 2008
Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New M... more Extended abstract of a paper presented at Microscopy and Microanalysis 2008 in Albuquerque, New Mexico, USA, August 3 – August 7, 2008
Bulletin of the American …, 2005
Magnetic nanoparticles in a liquid have two relaxation times, N\'{e}el, tauN\tau _{N}tauN, and Bro... more Magnetic nanoparticles in a liquid have two relaxation times, N\'{e}el, tauN\tau _{N}tauN, and Brownian relaxation, tauB\tau _{B}tauB. For particles larger than 10-20nm, tauN\tau _{N}tauN quickly becomes much larger than tauB\tau _{B}tauB and can be ignored. tauB\tau _{B}tauB is from rotation of the particle, and ...
Bulletin of the American …, 2005
Co-doped ZnO nanocluster films are prepared at room temperature under different oxygen concentrat... more Co-doped ZnO nanocluster films are prepared at room temperature under different oxygen concentrations by, our novel nanocluster system, based on a technique that is a combination of high pressure sputtering and aggregation. Magnetic properties of the cluster films are measured by ...
arXiv (Cornell University), Nov 5, 2015
Enzymes are proteins that function as biocatalysts in bioremediation. One of the major concerns i... more Enzymes are proteins that function as biocatalysts in bioremediation. One of the major concerns in environmental applications of enzymes is their short lifetime. Enzymes lose their activity due to oxidation, which results in less stability and a shorter lifetime thereby rendering them less efficient. An effective way to increase the stability, longevity, and reusability of the enzymes is to attach them to magnetic iron nanoparticles. If enzymes are attached to the magnetic iron nanoparticles then we can easily separate the enzymes from reactants or products by applying a magnetic field. With this aim, two different catabolic enzymes, trypsin and peroxidase, were attached to uniform core-shell magnetic nanoparticles (MNP's), produced in our laboratory. Our study indicates that the lifetime and activity of enzymes increases dramatically from a few hours to weeks and that MNP-Enzyme conjugates are more stable, efficient, and economical. We predict that MNPs shield the enzymes preventing them from becoming oxidized. This results in an increased lifetime of the enzymes. Because of the high magnetization (~140 emu/g) of our MNPs, nanoparticle-enzyme conjugates can efficiently be magnetically separated, making enzymes more productive. We also found that the enzyme structure plays a major role in efficient attachment of MNPs
MRS Proceedings, 1995
A beam of metal cluster ions of variable size is deposited with variable kinetic energy on a subs... more A beam of metal cluster ions of variable size is deposited with variable kinetic energy on a substrate. Mirror-like and strongly adhering films are produced on unheated substrates for sufficiently high cluster impact energies. Numerical simulations provide the physical insight why this novel technique gives different, and sometimes superior results compared to conventional methods. Several examples are presented.
In order to find a cost effective and environmentally benign technology to treat the liquid radio... more In order to find a cost effective and environmentally benign technology to treat the liquid radioactive waste into a safe and stable form for resource recycling or ultimate disposal, this study investigates the separation of radioactive elements from aqueous systems using magnetic nano-sorbents. Our current study focuses on novel magnetic nano-sorbents by attaching DTPA molecules onto the surface of double coated magnetic nanoparticles (dMNPs), and performed preliminary sorption tests using heavy metal ions as surrogates for radionuclides. The results showed that the sorption of cadmium (Cd) and lead (Pb) onto the dMNP-DTPA conjugates was fast, the equilibrium was reached in 30 min. The calculated sorption capacities were 8.06 mg/g for Cd and 12.09 mg/g for Pb. After sorption, the complex of heavy elements captured by nano-sorbents can be easily manipulated and separated from solution in less than 1 min by applying a small external magnetic field. In addition, the sorption results demonstrate that dMNP-DTPA conjugates have a very strong chelating power in highly diluted Cd and Pb solutions (1-10 μg/L). Therefore, as a simple, fast, and compact process, this separation method has a great potential in the treatment of high level waste with low concentration of transuranic elements compared tomore » tradition nuclear waste treatment. (authors)« less