All-inorganic perovskite quantum dot display breaks Cd-barrier
(Nanowerk Spotlight) Quantum dots (QDs) are nanoscale crystals of semiconductor material that exhibit excellent optoelectronic properties such as tunable emission wavelength, narrow emission spectrum, and high photoluminescence yields. First discovered in the 1980s, these materials have been the focus of intense research because of their potential to provide significant advantages in a wide variety of optical applications, among them light-emitting diodes (LEDs). Quantum dots are expected to deliver lower cost, higher energy efficiency and greater wavelength control for a wide range of products, including lamps, displays and photovoltaics.
Read more: All-inorganic perovskite quantum dot display breaks Cd-barrier
http://www.nanowerk.com/spotlight/spotid=41665.php
(Nanowerk Spotlight) Quantum dots (QDs) are nanoscale crystals of semiconductor material that exhibit excellent optoelectronic properties such as tunable emission wavelength, narrow emission spectrum, and high photoluminescence yields. First discovered in the 1980s, these materials have been the focus of intense research because of their potential to provide significant advantages in a wide variety of optical applications, among them light-emitting diodes (LEDs). Quantum dots are expected to deliver lower cost, higher energy efficiency and greater wavelength control for a wide range of products, including lamps, displays and photovoltaics.
Read more: All-inorganic perovskite quantum dot display breaks Cd-barrier
http://www.nanowerk.com/spotlight/spotid=41665.php
Nanowerk
All-inorganic perovskite quantum dot display breaks Cd-barrier
Nanowerk is the leading nanotechnology portal, committed to educate, inform and inspire about nanotechnologies, nanosciences, and other emerging technologies
کانال نانوتکنولوژی با هدف به اشتراک گذاشتن مطالب، مقالات،عکس و .....مرتبط با حوزه های مختلف نانوفناوری.....ایجاد گردیده است. به امید ایجاد جمعی پرشور از نانوتکنولوژیست های کشور
کانال نانوتکنولوژی با هدف به اشتراک گذاشتن مطالب، مقالات،عکس و .....مرتبط با حوزه های مختلف نانوفناوری.....ایجاد گردیده است. به امید ایجاد جمعی پرشور از نانوتکنولوژیست های کشور......منتظر حضور گرمتان هستیم🌹🌹...این کانال را به اشتراک بگزارید... https://telegram.me/aslmfdm2fkifkg4nano5mfdfjrjgg9kk
Pre-coating nanoparticles to better deal with protein coronas
(Nanowerk Spotlight) A major goal in nanomedicine is to make nanoparticles with the capability of in vivo targeting for both imaging and delivery of therapeutic biomolecules in the human body. One strategy to obtain a high targeting yield is to functionalize the surface of nanoparticles with targeting ligands – like antibodies or aptamers – that enhance the binding of nanoparticles to receptors on the target cells and facilitate nanoparticle uptake by receptor-mediated endocytosis. www.nanowerk.com/spotlight/spotid=41706.php
(Nanowerk Spotlight) A major goal in nanomedicine is to make nanoparticles with the capability of in vivo targeting for both imaging and delivery of therapeutic biomolecules in the human body. One strategy to obtain a high targeting yield is to functionalize the surface of nanoparticles with targeting ligands – like antibodies or aptamers – that enhance the binding of nanoparticles to receptors on the target cells and facilitate nanoparticle uptake by receptor-mediated endocytosis. www.nanowerk.com/spotlight/spotid=41706.php
Nanowerk
Pre-coating nanoparticles to better deal with protein coronas
Nanowerk is the leading nanotechnology portal, committed to educate, inform and inspire about nanotechnologies, nanosciences, and other emerging technologies
Forwarded from Advanced Technologies
کانال نانوتکنولوژی با هدف به اشتراک گذاشتن مطالب، مقالات،عکس و .....مرتبط با حوزه های مختلف نانوفناوری.....ایجاد گردیده است. به امید ایجاد جمعی پرشور از نانوتکنولوژیست های کشور......منتظر حضور گرمتان هستیم🌹🌹...این کانال را به اشتراک بگزارید... https://telegram.me/aslmfdm2fkifkg4nano5mfdfjrjgg9kk
نام:هاشم رفيعي تبار-چهره ماندگار فیزیک و دارای عنوان پدر نانوتکنولوژی ایران
مرتبه علمي :Full Professor Of Physics
دانشگاه :مرکز دانشهاي بنيادي(IPM)- دانشکده علوم نانو
گرايش ها: فيزيک محاسباتي در ابعاد نانو- سيستم هاي بيو فيزيکي- شبيه سازي محاسباتي در فيزيک حالت جامد
ايشان سالها در دانشگاه کمبريج مشغول تدريس بودند،سپس در سال 2003 به ايران آمده و تاحال حاضر به عنوان مدير دانشکده علوم نانو در IPM مشغول به فعاليت مي باشند. از ايشان مقالات بسياري به چاپ رسيده و در جهان به عنوان دانشمند علوم نانو شناخته شده هستند. همچنين کتابي توسط انتشارات دانشگاه کمبريج با عنوان Computational Physics Of Carbon Nanotubes از ايشان به چاپ رسيده است. پروفسور رفيعي تبار چند سال گذشته به عنوان چهره ماندگار ايران در رشته فيزيک نيز برگزيده شدند. مصاحبه ای از ایشان در مورد نانوتکنولوژی در لینک زیر موجود می باشد: http://minevisam56.persianblog.ir/post/16/
مرتبه علمي :Full Professor Of Physics
دانشگاه :مرکز دانشهاي بنيادي(IPM)- دانشکده علوم نانو
گرايش ها: فيزيک محاسباتي در ابعاد نانو- سيستم هاي بيو فيزيکي- شبيه سازي محاسباتي در فيزيک حالت جامد
ايشان سالها در دانشگاه کمبريج مشغول تدريس بودند،سپس در سال 2003 به ايران آمده و تاحال حاضر به عنوان مدير دانشکده علوم نانو در IPM مشغول به فعاليت مي باشند. از ايشان مقالات بسياري به چاپ رسيده و در جهان به عنوان دانشمند علوم نانو شناخته شده هستند. همچنين کتابي توسط انتشارات دانشگاه کمبريج با عنوان Computational Physics Of Carbon Nanotubes از ايشان به چاپ رسيده است. پروفسور رفيعي تبار چند سال گذشته به عنوان چهره ماندگار ايران در رشته فيزيک نيز برگزيده شدند. مصاحبه ای از ایشان در مورد نانوتکنولوژی در لینک زیر موجود می باشد: http://minevisam56.persianblog.ir/post/16/
minevisam56.persianblog.ir
مصاحبه من با دکتر رفیعی تبار چهره ماندگار فیزیک نظری-جام جم اسفند85
....موسسه معتبر که این کار در آن انجام شده است، خبر را اعلام کند مسوولیت بقیه کارها هم صرفا با ...
کنفرانس مهندسی مواد و متالورژی-کارگاه پوشش های نانویی- کانال نلنوتکنولوژی https://telegram.me/aslmfdm2fkifkg4nano5mfdfjrjgg9kk
Light-driven bioelectronic implants without batteries
(Nanowerk Spotlight) Benefitting from the miniaturization enabled by nanotechnologies, bioelectronics is a growing research field that is concerned with the convergence of biology and electronics: the application of biological materials and processes in electronics; and the use of electronic devices in living systems.
Among the latter, implantable bioelectronic devices wirelessly powered by different stimuli provide electrical impulses to precisely modulate the body's neural circuits – although wireless powering and remote manipulation still remain a major challenge for the practical use of these devices, which include retinal and cochlear implants; deep brain stimulators for epilepsy and Parkinson's disease; pacemakers; and brain-machine interfaces.
Adding to the options for wirelessly powering implants from outside the body, researchers in China are proposing a light-driven powering device using near infrared rays (nIR). Flashing light impulses, which are absorbed by the device, induce temperature fluctuation, thus generating voltage/current pulses which can be used for charging a battery or biological stimulations.
"Compared to the wireless power transport by electromagnetic coupling, near-infrared light with a wavelength of 760-1500 nm – known for its heating and medical physical therapy effects – provides an alternative wireless power that can penetrate into human tissue up to a depth of 4-10 cm," Prof. Hongzhong Liu and Dr. Weitao Jiang, from the State Key Laboratory for Manufacturing Systems Engineering at Xi'an Jiaotong University, explain to Nanowerk.
Read more: Light-driven bioelectronic implants without batteries
http://www.nanowerk.com/spotlight/spotid=41787.php
(Nanowerk Spotlight) Benefitting from the miniaturization enabled by nanotechnologies, bioelectronics is a growing research field that is concerned with the convergence of biology and electronics: the application of biological materials and processes in electronics; and the use of electronic devices in living systems.
Among the latter, implantable bioelectronic devices wirelessly powered by different stimuli provide electrical impulses to precisely modulate the body's neural circuits – although wireless powering and remote manipulation still remain a major challenge for the practical use of these devices, which include retinal and cochlear implants; deep brain stimulators for epilepsy and Parkinson's disease; pacemakers; and brain-machine interfaces.
Adding to the options for wirelessly powering implants from outside the body, researchers in China are proposing a light-driven powering device using near infrared rays (nIR). Flashing light impulses, which are absorbed by the device, induce temperature fluctuation, thus generating voltage/current pulses which can be used for charging a battery or biological stimulations.
"Compared to the wireless power transport by electromagnetic coupling, near-infrared light with a wavelength of 760-1500 nm – known for its heating and medical physical therapy effects – provides an alternative wireless power that can penetrate into human tissue up to a depth of 4-10 cm," Prof. Hongzhong Liu and Dr. Weitao Jiang, from the State Key Laboratory for Manufacturing Systems Engineering at Xi'an Jiaotong University, explain to Nanowerk.
Read more: Light-driven bioelectronic implants without batteries
http://www.nanowerk.com/spotlight/spotid=41787.php
Nanowerk
Light-driven bioelectronic implants without batteries
Adding to the options for wirelessly powering implants from outside the body, researchers are proposing a light-driven powering device using near infrared rays (nIR). Flashing light impulses, which are absorbed by the device, induce temperature fluctuation…
3D graphene with high surface area and large mesopore volume
(Nanowerk Spotlight) The performance of batteries and supercapacitors depends on the density at which they can store energy and the speed at which they can be charged and discharged. These functions critically depend on the nanostructured electrodes that are used in these energy systems.
Porous carbon nanomaterials are widely employed as electrodes for supercapacitors and electrodes in commercial lithium ion batteries. Porous carbon, such as activated carbon, microporous carbon, and mesoporous carbon, usually has very high surface area and tunable porous structure but very poor electrical conductivity.
In contrast, sp2 carbon – graphene, fullerenes, and carbon nanotubes – exhibit high electrical conductivity but limited surface area.
"A carbon material with high electrical conductivity, high specific surface area, tunable pore structure, mechanically robust framework, and high chemical stability is an important requirement for advanced electrochemical energy storage," Dr. Qiang Zhang, an associate professor at the Department of Chemical Engineering at Tsinghua University, tells Nanowerk. "However, neither porous carbon or sp2 carbon can full meet these requirements yet."
How to create a conductive carbon material with especially large pore volume, and hence large surface area, has therefore been a key focus in electrode research.
Read more: 3D graphene with high surface area and large mesopore volume
http://www.nanowerk.com/spotlight/spotid=41510.php
(Nanowerk Spotlight) The performance of batteries and supercapacitors depends on the density at which they can store energy and the speed at which they can be charged and discharged. These functions critically depend on the nanostructured electrodes that are used in these energy systems.
Porous carbon nanomaterials are widely employed as electrodes for supercapacitors and electrodes in commercial lithium ion batteries. Porous carbon, such as activated carbon, microporous carbon, and mesoporous carbon, usually has very high surface area and tunable porous structure but very poor electrical conductivity.
In contrast, sp2 carbon – graphene, fullerenes, and carbon nanotubes – exhibit high electrical conductivity but limited surface area.
"A carbon material with high electrical conductivity, high specific surface area, tunable pore structure, mechanically robust framework, and high chemical stability is an important requirement for advanced electrochemical energy storage," Dr. Qiang Zhang, an associate professor at the Department of Chemical Engineering at Tsinghua University, tells Nanowerk. "However, neither porous carbon or sp2 carbon can full meet these requirements yet."
How to create a conductive carbon material with especially large pore volume, and hence large surface area, has therefore been a key focus in electrode research.
Read more: 3D graphene with high surface area and large mesopore volume
http://www.nanowerk.com/spotlight/spotid=41510.php
Nanowerk
3D graphene with high surface area and large mesopore volume
A carbon material with high electrical conductivity, high specific surface area, tunable pore structure, mechanically robust framework, and high chemical stability is an important requirement for advanced electrochemical energy storage. However, neither porous…
Climatic change on carbon nanotubes – Carbon nanotubes have many characteristics that promise to revolutionize the world of structural materials. There are different ways to grow carbon nanotubes, especially the CVD technique, which allows obtaining SWCNT’s on a silicon surface. These SWCNT can be carried from the silicon surface to another surface, as HOPG, without suffering changes on their properties. That means nanomanipulation of carbon nanotubes. (Mr Miguel Ângel Fernández Vindel, Universidad Autonoma de Madrid/Spain)
Read more: Nanotechnology Images and Pictures
Read more: Nanotechnology Images and Pictures
The imaged object is a single crystalline diamond grain that is anisotropically etched by hot spheres of molten nickel (red). Self-organized nickel particles are obtained by sintering a thin Ni film (100 nm) that is evaporated on a polished diamond substrate. Self-organisation and etching are conducted by the following annealing procedure: 1000°C in 500 mbar H2, 24 h. (Image: Waldemar Smirnov, Fraunhofer Institut Angewandte Festkörperphysik, Germany)
Read more: Nanotechnology Images and Pictures
Read more: Nanotechnology Images and Pictures