检索结果-南通市图书馆

A Smart Procedure for the Femtosecond Laser-Based Fabrication of a Polymeric Lab-on-a-Chip for Capturing Tumor Cell

在线全文

学校读者我要写书评

暂无评论

Engineering 2021年第10期7卷 1434-1440页

作者： Annalisa Volpe Udith Krishnan Maria Serena Chiriacò Elisabetta Primiceri Antonio Ancona Francesco Ferrara Department of Physics University of Bari“Aldo Moro”Bari 70126Italy institute for photonics and nanotechnologies Bari 70126Italy institute of Nanotechnology Lecce 73100Italy STMicroelectronics Lecce 73100Italy

Rapid prototyping methods for the design and fabrication of polymeric labs-on-a-chip are on the rise,as they allow high degrees of precision and *** example,a microfluidic platform may require an optimization phase in which it could be necessary to continuously modify the architecture and geometry;however,this is only possible if easy,controllable fabrication methods and low-cost materials are *** this paper,we describe the realization process of a microfluidic tool,from the computer-aided design(CAD)to the proof-of-concept application as a capture device for circulating tumor cells(CTCs).The entire platform was realized in polymethyl methacrylate(PMMA),combining femtosecond(fs)laser and micromilling fabrication *** multilayer device was assembled through a facile and low-cost solvent-assisted method.A serpentine microchannel was then directly biofunctionalized by immobilizing capture probes able to distinguish cancer from non-cancer cells without *** low material costs,customizable methods,and biological application of the realized platform make it a suitable model for industrial exploitation and applications at the point of care.

关键词： Lab-on-a-chip Fs laser Circulating tumor cells Point of care Thermal bonding Polymers

Whitlockite has a characteristic distribution in mammary microcalcifications and it is not associated with breast cancer

在线全文

学校读者我要写书评

暂无评论

Cancer Communications 2023年第10期43卷 1169-1173页

作者： Carlo Morasso Renzo Vanna Francesca Piccotti Lidia Frizzi Marta Truffi Sara Albasini Camelia Borca Thomas Huthwelker Laura Villani Oliver Bunk Cinzia Giannini Fabio Corsi Istituti Clinici Scientifici Maugeri IRCCS PaviaItaly National Research Council (ifn-CNR) Institute for Photonics and NanotechnologiesMilanItaly Paul Scherrer Institut Villigen PSISwitzerland National Research Council Institute of CrystallographyBariItaly Department of Biomedical and Clinical Sciences University of MilanMilanItaly

Dear Editor,Microcalcifications(MCs)are common findings in mammography and can be indicative of different degrees of malignancy,thus requiring multiple stereotaxis vacuumassisted biopsies under mammography to identify and characterize breast cancer[1,2].In many cases,however,the presence of MCs is not associated with the presence of a ***,a better understanding of the physical-chemical properties of MCs is needed to assess the relationship between their presence and breast cancer.

关键词： breast cancer cancer.

Hunting down the ohmic contact of organic field-effect transistor

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第11期28卷 382-387页

作者： M Micjan M Novota P Telek M Donoval M Weis institute of Electronics and photonics Slovak University of Technology

We report properties of contact resistances observed on pentacene organic field-effect transistors(OFET) with four different source/drain electrodes, namely, copper(Cu), gold(Au), silver(Ag), and germanium(Ge). The metals were selected to provide a wide range of energy barriers for charge injection, from blocking contact to smooth injection. All OFETs exhibited strong voltage dependence of the contact resistance, even for devices with smooth injection, which is in strong disagreement with the definition of ohmic contacts. A comparison with current crowding, resistive network, Fowler–Nordheim tunneling, and electric field enhanced thermionic injection(Schottky emission) pointed to importance of local electric fields and/or electrostatic field charges.

关键词： organic field-effect transistors contact resistance charge injection

Fano-like resonance characteristics of asymmetric Fe_2O_3@Au core/shell nanorice dimer

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2014年第8期23卷 474-480页

作者：王彬兵周骏张昊鹏陈金平 institute of photonics Faculty of Science Ningbo University

A geometrical configuration of Fe2O3/Au core-shell nanorice dimer is proposed and its multipolar plasmon Fano- like resonance characteristics are theoretically investigated by generalizing the plasmon hybridization model of individual nanorice to the bright and dark modes of the nanorice dimer. Under the irradiation of polarization light, the extinction spectra of the nanorice dimer are numerically simulated by using the finite element method （FEM）. Our studies show that the Fano-like resonance of the nanorice dimer results in an asymmetric line shape of the Fano dip in the extinction spectrum which can be controlled by varying the structure parameters of the nanorice dimer. Meanwhile, there is a giant field enhancement at the gap between the two nanorices on account of the plasmonic coupling in the nanorice dimer. The aforementioned two characteristics of the nanorice dimer are useful for plasmon-induced transparency and localized surface plasmon resonance sensors.

关键词： localized surface plasmon resonance field enhancement nanorice plasmon hybridization

High-speed integrated QKD system

在线全文

学校读者我要写书评

暂无评论

photonics Research 2023年第6期11卷 1007-1014页

作者： REBECKA SAX ALBERTO BOARON GIANLUCA BOSO SIMONE ATZENI ANDREA CRESPI FADRI GRÜNENFELDER DAVIDE RUSCA AWS AL-SAADI DANILO BRONZI SEBASTIAN KUPIJAI HANJO RHEE ROBERTO OSELLAME HUGO ZBINDEN Group of Applied Physics University of Geneva1205 GenèveSwitzerland ID Quantique SA 1227 GenèveSwitzerland institute for photonics and nanotechnologies and no-ifn CNR-IFN20133 MilanoItaly Dipartimento di Fisica Politecnico di Milano20133 MilanoItaly Sicoya GmbH 12489 BerlinGermany

Quantum key distribution(QKD)is nowadays a well-established method for generating secret keys at a distance in an information-theoretically secure way,as the secrecy of QKD relies on the laws of quantum physics and not on computational *** order to industrialize QKD,low-cost,mass-manufactured,and practical QKD setups are ***,photonic and electronic integration of the sender's and receiver's respective components is currently in the *** we present a high-speed(2.5 GHz)integrated QKD setup featuring a transmitter chip in silicon photonics allowing for high-speed modulation and accurate state preparation,as well as a polarization-independent low-loss receiver chip in aluminum borosilicate glass fabricated by the femtosecond laser micromachining *** system achieves raw bit error rates,quantum bit error rates,and secret key rates equivalent to a much more complex state-of-the-art setup based on discrete components[*** et al.,***.121,190502(2018)].

关键词： technique QKD polarization

Analytic Matrix Method for the Study of Propagation Characteristics of a Bent Planar Waveguide

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2000年第5期17卷 349-351页

作者： LIU Qing CAO Zhuang-Qi SHEN Qi-Shun DOU Xiao-Ming CHEN Ying-Li Molecular photonics Labortory Institute of Optics and PhotonicsShanghai Jiao Tong UniversityShanghai 200030

An analytic matrix method is used to analyze and accurately calculate the propagation constant and bending losses of a bent planar *** method gives not only a dispersion equation with explicit physical insight,but als... 详细信息

关键词： propagation bending planar

Channel-resolved subcycle interferences of electron wave packets emitted from H_(2) in two-color laser fields

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2016年第4期4卷 1-7页

作者： Xinhua Xie Stefan Roither Daniil Kartashov Li Zhang Andrius Baltuska Markus Kitzler photonics institute Technische Universitat Wien institute of Theoretical Chemistry University of Vienna

We report on the observation of subcycle interferences of electron wave packets released during strong field ionization of H_2 with cycle-shaped two-color laser fields. With a reaction microscope we measure three-dimensional momentum distributions of photoelectrons correlated with either H_2^+ or protons within different energy ranges generated by dissociation of H_2^+. We refer to these different types of photoelectrons as channels. Our results show that the subcycle interference structures of electron wave packets are very sensitive to the cycle shape of the two-color laser field. We explain this behavior by the dependence of the ionization time within an optical cycle on the shape of the laser field cycle. The subcycle interference structures can be further used to obtain insight into the subcycle dynamics of molecules during strong field interaction.

关键词： molecular dynamics strong field ionization wave packet interference

Computational study of inverse ferrite spinels

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2019年第5期28卷 305-311页

作者： A EL Maazouzi R Masrour A Jabar M Hamedoun Laboratory of Materials Processes Environment and Quality Cadi Ayyad University National School of Applied Sciences institute of Nanomaterials and nanotechnologies

The magnetic properties of inverse ferrite Fe_(3+) Fe_(3+)Co_(2+) O^(2-)_4, Fe^(3+) Fe^(3+)Cu^(2+) O^2_(-4), Fe^(3+) Fe^(3+)Fe^(2+) O^2_(-4),and Fe^(3+) Fe^(3+)Ni^(2+) O^(2-)_4spinels have been studied using Monte Carlo simulation. We have also calculated the critical and Curie Weiss temperatures from the thermal magnetizations and inverse of magnetic susceptibilities for each *** hysteresis cycles have been found for the four systems. Finally, we found the critical exponents associated with magnetization, magnetic susceptibility, and external magnetic field. Our results of critical and Curie Weiss temperatures are similar to those obtained by experiment results. The critical exponents are similar to those of known 3 D-Ising model.

关键词： inverse ferrites spinels Monte Carlo simulation critical and Curie Weiss temperatures magnetic hysteresis cycles critical exponents

Injector Quantum Dot Molecule Infrared Photodetector:A Concept for Efficient Carrier Injection

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2011年第2期3卷 121-128页

作者： Thomas Gebhard Thomas Gebhard Photonics InstituteVienna University of Technology

Quantum dot infrared photodetectors are expected to be a competitive technology at high oper ation temperatures in the long and very long wavelength infrared spectral *** the fact that they already achieved notable success,the performance suffers from the thermionic emission of electrons from the quantum dots at elevated temperatures resulting in a decreasing *** order to provide an efficient carrier injection at high temperatures,quantum dot infrared photodetectors can be separated into two parts:an injection part and a detection part,so that each part can be separately *** order to integrate such functionality into a device,a new class of quantum dot infrared photodetectors using quantum dot molecules will be *** addition to a general discussion simulation results suggest a possibility to realize such a device.

关键词： Quantum dot infrared photodetector Injection Quantum dot molecule High temperature operation Responsivity