Laser surgery provides clean,fast and accurate modeling of tissue.However,the inability to determine what kind of tissue is being ablated at the bottom of the cut may lead to the iatrogenic damage of structures that w...Laser surgery provides clean,fast and accurate modeling of tissue.However,the inability to determine what kind of tissue is being ablated at the bottom of the cut may lead to the iatrogenic damage of structures that were meant to be preserved.In this context,nerve preservation is one of the key challenges in any surgical procedure.One example is the treatment of parotid gland pathologies,where the facial nerve（N.VII） and its main branches run through and fan out inside the glands parenchyma.A feedback system that automatically stops the ablation to prevent nerve-tissue damage could greatly increase the applicability and safety of surgical laser systems.In the present study,Laser Induced Breakdown Spectroscopy（LIBS） is used to differentiate between nerve and gland tissue of an ex-vivo pig animal model.The LIBS results obtained in this preliminary experiment suggest that the measured spectra,containing atomic and molecular emissions,can be used to differentiate between the two tissue types.The measurements and differentiation were performed in open air and under normal stray light conditions.展开更多
A new,compact and exible low energy experimental platform of highly charged ions(HCIs)based on an electron beam ion source of the Dresden EBIS-A type is presented.The so-called IMP EBIS-A Facility of the Institute of ...A new,compact and exible low energy experimental platform of highly charged ions(HCIs)based on an electron beam ion source of the Dresden EBIS-A type is presented.The so-called IMP EBIS-A Facility of the Institute of Modern Physics(IMP)in Lanzhou is designed as a user facility for the state-resolved charge exchange studies in HCIs with atoms and molecules collisions by cold target recoil ion momentum spectroscopy(COLTRIMS).展开更多
ZnO-based n/p homojunctions were fabricated by sputtering from a single zinc nitride target at room temperature on metal or ITO-coated glass and Si substrates.A multi-target rf-sputtering system was used for the growt...ZnO-based n/p homojunctions were fabricated by sputtering from a single zinc nitride target at room temperature on metal or ITO-coated glass and Si substrates.A multi-target rf-sputtering system was used for the growth of all oxide films as multilayers in a single growth run without breaking the vacuum in the growth chamber.The nitrogen-containing films(less than 1.5 at.% of nitrogen)were n-type ZnO when deposited in oxygen-deficient Ar plasma(10%O_(2))and p-type ZnO when deposited in oxygen-rich Ar plasma(50%O_(2)).The all-oxide homojunction ITO/n-ZnO/p-ZnO/ITO/glass was fabricated in a single deposition run and exhibited visible transparency in the range of 75-85%.The n/p ZnO homojunctions,having metallic contacts,formed on conventionally processed substrates showed a fairly unstable behavior concerning the current-voltage characteristics.However,the same homojunctions formed on Si_(3)N_(4)-patterned substrates and stored in atmosphere for a period of five months were stable exhibiting a turn-on voltage of around 1.5 V.The realization of a room temperature sputtered transparent and stable ZnO homojunction paves the way to the realization of all-oxide transparent optoelectronic devices.展开更多
基金the funding of the Erlangen Graduate School in Advanced Optical Technologies(SAOT)by the Deutsche Forschungsgemeinschaft(German Research Foundation-DFG) within the framework of the Initiative for Excellence
文摘Laser surgery provides clean,fast and accurate modeling of tissue.However,the inability to determine what kind of tissue is being ablated at the bottom of the cut may lead to the iatrogenic damage of structures that were meant to be preserved.In this context,nerve preservation is one of the key challenges in any surgical procedure.One example is the treatment of parotid gland pathologies,where the facial nerve（N.VII） and its main branches run through and fan out inside the glands parenchyma.A feedback system that automatically stops the ablation to prevent nerve-tissue damage could greatly increase the applicability and safety of surgical laser systems.In the present study,Laser Induced Breakdown Spectroscopy（LIBS） is used to differentiate between nerve and gland tissue of an ex-vivo pig animal model.The LIBS results obtained in this preliminary experiment suggest that the measured spectra,containing atomic and molecular emissions,can be used to differentiate between the two tissue types.The measurements and differentiation were performed in open air and under normal stray light conditions.
基金National Key R&D Program of China(2017YFA0402400,2017YFA0402300)National Natural Science Foundation of China(11274317)。
文摘A new,compact and exible low energy experimental platform of highly charged ions(HCIs)based on an electron beam ion source of the Dresden EBIS-A type is presented.The so-called IMP EBIS-A Facility of the Institute of Modern Physics(IMP)in Lanzhou is designed as a user facility for the state-resolved charge exchange studies in HCIs with atoms and molecules collisions by cold target recoil ion momentum spectroscopy(COLTRIMS).
基金partially supported by the EU Horizon 2020‘ASCENT’project,grant agreement No 654384(project 046)the“Materials and Processes for Energy and Environment Applications-AENAO”(MIS 5002556)project co-financed by Greece and EU(European Regional Development Fund)+1 种基金the EU's FP7/2007-2013 project“Oxide Materials Towards a Matured Post-silicon Electronics Era-ORAMA”(contract no.NMP3-LA-2010-246334)the project“Electronics Beyond Silicon Era”(ELBESIER)Erasmus+KА2 programme.
文摘ZnO-based n/p homojunctions were fabricated by sputtering from a single zinc nitride target at room temperature on metal or ITO-coated glass and Si substrates.A multi-target rf-sputtering system was used for the growth of all oxide films as multilayers in a single growth run without breaking the vacuum in the growth chamber.The nitrogen-containing films(less than 1.5 at.% of nitrogen)were n-type ZnO when deposited in oxygen-deficient Ar plasma(10%O_(2))and p-type ZnO when deposited in oxygen-rich Ar plasma(50%O_(2)).The all-oxide homojunction ITO/n-ZnO/p-ZnO/ITO/glass was fabricated in a single deposition run and exhibited visible transparency in the range of 75-85%.The n/p ZnO homojunctions,having metallic contacts,formed on conventionally processed substrates showed a fairly unstable behavior concerning the current-voltage characteristics.However,the same homojunctions formed on Si_(3)N_(4)-patterned substrates and stored in atmosphere for a period of five months were stable exhibiting a turn-on voltage of around 1.5 V.The realization of a room temperature sputtered transparent and stable ZnO homojunction paves the way to the realization of all-oxide transparent optoelectronic devices.
