Category Archives: Nanotechnology

The swarms of Nano machines could help in improving the efficiency of any machine

nanoEnergy conversion happens in all machines as it converts from one form of energy to another form. As per thermodynamics the energy conversion process take place on the macro-level of big machines as well as at the micro-level of molecular machines that drive muscles or metabolic processes and even on the atomic level. Some scientists study that the thermodynamics of Nanomachines consisting of only a few atoms which outline how these small machines behave in concert. To improve the energy efficiency of all kinds of machines that means big or small, their insights could be used.

The current progress in nanotechnology has a vital role in designing and manufacturing of extremely small artificial machines and to understand the world at ever-smaller scales. As cars, these machines are far more efficient than large machines. As we have in daily life applications the output is low compared to the needs in absolute term. This is the reason we studied how the Nano machines interact with each other and looked at how ensembles of those small machines behave. If there are synergies when they act in concert, it should be observed.

Under certain conditions the researchers found that the nanomachines, synchronise their movements and start to arrange in “swarms”. The synchronisation of the machines triggers significant synergy effects could be seen for which the overall energy output of the ensemble is far greater than the sum of the individual outputs. The researcher explains that while this is a basic research, the principles outlined in the paper could potentially be used to improve the efficiency of any machine in the future.

The scientists created mathematical models that are based on existing literature and outcomes of experimental research in order to simulate and study the energetic behaviour of swarms of Nanomachines.

Use of NanoUAV’s in Military Application

The increased application of unmanned air vehicles (UAVs) in a wide variety of industries has inspired both public and private research laboratories to not only support the miniaturization of these devices But also continually improve this technology. Researchers are hopeful that an increase in the autonomy of micro- and Nano-UAV’s will allow previously slow, dangerous and unscalable projects to be completed successfully as research in this area of small drones continues to progress.

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PD-100 Black Hornet is one of the most well-known examples of a commercialized nanodrone that has been successfully applied for military purposes since 2013. By offering intelligence, surveillance and reconnaissance support during critical mission operations it allows troops to spy on potential threats to military personnel

Encased in a rugged, plastic molded shell, While maintaining a rotor span of 120 mm2,the 100 millimeter (mm) Black Hornet weighs approximately 16 grams. The total weight of this system remains below 1 kg and can easily fit in a soldier’s pocket when equipped with a surveillance camera. The Black Hornet generates a negligible amount of noise In addition to its ultra-compact dimensions, without causing any unwanted attention to enemies in the process It allows this aircraft to readily access congested and threat-prone areas effectively.

Recently the technology have led to the development of the Black Hornet 3, which has improved features including a total weight of 32 g, an ability to fly in areas outside of GPS coverage, a thermal micro camera and an overall speed of 21 km/hour3 to supports Black Hornets for military applications. As militaries are becoming increasingly interested in advancing the modern battle field, a thermal imaging and technology company that will significantly improve the ability to protect soldiers during war.

Nanotubes can change the shape of water

Insert water in Nanotube hole then the water molecules will align into a square rod, If the nanotube is just the right width. By using molecular models it can be demonstrated that weak van der Waals forces between the inner surface of the nanotube and the water molecules are strong enough to snap the oxygen and hydrogen atoms into place.

According to Molecular models of nanotube ice, water molecules take the shape of a square tube because of the pressure of a carbon nanotube at left and a boron nitride nanotube at right. The phenomenon is dependent upon the diameter of the nanotube. It is also known as two-dimensional “ice,” because the molecules freeze regardless of the temperature. To fabricate nanochannels and energy-storing nano capacitors, the research provides valuable insight on ways to leverage atomic interactions between nanotubes and water molecules.

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Boron nitride is best at constraining the shape of water when the nanotubes are 10.5 angstroms wide. The researchers built molecular models of carbon and boron nitride nanotubes with adjustable widths. The hydrogen atoms in tightly confined water take on interesting structural properties. Recent experiments on labs showed and prompted the researchers to build density functional theory models to analyze the forces responsible.

Researchers made 3 angstroms wide water molecules inside carbon and boron nitride nanotubes of various chiralities and the diameter is between 8 and 12 angstroms. They discovered that nanotubes in the middle diameters had the most impact on the balance between molecular interactions and van der Waals pressure that prompted the transition from a square water tube to ice.

If the water molecule is too large as compared to nanotube, the water keeps its amorphous shape. The nanotubes’ van der Waals force starts to push water molecules into organized square shapes.” But at about 8 angstroms, due to the particular polarization of atoms, the strongest interactions were found in boron nitride nanotubes. Nanotube ice can be used in molecular machines or foster ways to deliver a few molecules of water to targeted cells, like a nanoscale syringe.

Graphene nanoribbons- Quantum chains

Scientists have discovered a leap forward that could be utilized for exact Nano transistors-perhaps even quantum PCs. A material that comprises of atom of a solitary component however has totally unique properties relying upon the nuclear plan – this may sound odd, yet is really reality with graphene nano-strips. The strips, which are just a couple of carbon iotas wide and precisely one particle thick, have altogether different electronic properties relying upon their shape and width: conductor, semiconductor.

These days analysts have now prevailing in definitely changing the properties of the strips by particularly change their shape. The specific component of this innovation is that not electronic properties of atom said above to be changed – it can likewise be utilized to produce particular neighbourhood quantum states. On the off chance that the width of a restricted graphene nanoribbon changes, for this situation from seven to nine molecules, an uncommon zone is made at the progress: in light of the fact that the electronic properties of the two different contrast in an extraordinary, alleged topological way, an ensured and consequently exceptionally vigorous new quantum state is made in the change zone.

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In light of these novel quantum chains, exact nano-transistors could be fabricated later on for the best approach to Nano gadgets. This isn’t exactly as basic: for the fast and development of the electronic properties, every one of the few hundred or even a large number of iotas must be in the perfect place.

While in transit to nanoelectronics Based on these novel quantum chains, exact nano-transistors could be produced later on an outing into the quantum domain: Ultrasmall transistors – and in this way the subsequent stage in the further scaling down of electronic circuits – are the conspicuous application potential outcomes here: despite the fact that they are in fact testing, hardware in light of nano-transistors really work essentially as microelectronics. Regardless of whether this potential can really be misused for future quantum PCs stays to be seen, be that as it may. It isn’t sufficient to make limited topological states in the nanoribbons.

Fabrication of Nanostructured Arrays on Polymer Films

 The development of Fabrication of Nanostructured Arrays on Polymer Films is a creation procedure for varieties of nanostructures (e.g., nanocones) on adaptable polymer films. The manufacture procedure takes into consideration the nanocone clusters to be made on an expansive scale (e.g., 10-100 sq. inches) on an adaptable polymer film by means of a two-advance process. The initial step comprises of self-gathering a layer of polymer microspheres or nano spheres on an alternate polymer film. The second step comprises of the concurrent differential carving of the polymer circles and film to make the nanostructured surface. The resultant nanocone exhibits would then be able to be covered by an ultrathin metal, polymer, oxide, or semiconductor film or nanoparticles. The subsequent nanostructured surfaces have exceptional optical and wetting properties, and the thin movies are sufficiently adaptable to coat bended or convoluted surfaces.

Varieties of nanostructures composed on surfaces are exceedingly fascinating because they can display one of a kind surface property, for example, basic radiance, hostile to reflectivity, superhydrophobicity, improved synergist action and coupled plasmonic optical resonances. These nanostructured surfaces can be possibly actualized as fundamental parts in an assortment of essential application gadgets including biosensors, against intelligent coatings, sun powered boards, self-cleaning surfaces, and bactericidal surfaces. There is a neglected requirement for an economical, basic, fast, and versatile innovation to functionalize extensive surface territories with nanostructures in the zones of therapeutic diagnostics, vitality enterprises and military businesses – even possibly for regular articles (e.g., auto, garments).

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Techniques that use “top-down” manufacture, for example, centered particle shaft scratching and e-pillar lithography can be utilized to make metallic, semiconductor and oxide nanostructures with exact control, however are exorbitant, moderately moderate and constrained altogether realistic organized region. Moreover, objects with bended surfaces or complex shapes can’t be utilized. The UCI scientists have built up another two-advance manufacture process for making nanostructure clusters on thin polymer films that is anything but difficult to actualize, reasonable, flexible, and quick.

 

Treating nail fungus with Nanotechnology

Nail fungus known as Onychomycosis impacts millions of people worldwide causing nail disfigurement, pain, and increased risk of soft tissue infection. Treatments like topical antifungal treatments are available but treatment failure remains high due to a number of factors.

To improve its treatment, Scientists investigated the use of nanotechnology and make it more cost effective. It is noticed that when Efinaconazole is combined with the nitric oxide-releasing nanoparticles, it achieves the same antifungal effects but at a fraction of the amount of the medication alone needed to impart the same effect.

Nanotechnology is being employed to better deliver established imaging and therapeutic agents in medicine and surgery fields to ultimately improve patient outcomes “A quickly emerging roadblock in patient care is, unfortunately, access to medications due to rising cost and poor insurance coverage.”

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Combination of Nanoparticle and medication are opening the door to potentially better and more tolerable treatment regimens. The additional benefit is the ability of nanoparticles to access infections in unreachable locations as penetration and retaining activity across the nail plate.

By combining them at a fraction of these concentrations we could impart the same antifungal activity at the highest concentrations tested of either alone. “The impact of this combo, highlighted their synergistic damaging effects at concentrations that would be completely safe to human cells, which we visualized using electron microscopy as compared to either product alone.

“With the results, to determine the efficacy of the treatment in a clinical setting, it is worth further researching the synergy of nitric oxide-releasing nanoparticles and Efinaconazole against onychomycosis.

 

Ability of Silicon Chips to Tackle Big Data

To transmit information for future computing there is a major advantage in the ability to use light instead of electrical signals. The integration of electrical circuits with different optical components side-by-side on a single silicon chip using, for the first time, sub-100nm semiconductor technology is allowed by SILICON NANOPHOTONICS which is also known as the breakthrough technology.

Silicon Nanophotonics provides a super highway for large volumes of data to move at rapid speeds between computer chips in servers, large datacenters, and supercomputers and it uses pulses of light for communication and “This allows us to move silicon nanophotonics technology into a real-world manufacturing environment that will have impact across a range of applications and alleviating the limitations of congested data traffic and high-cost traditional interconnects. Due to an explosion of new applications and services, the amount of data being created and transmitted over enterprise networks continues to grow. Silicon Nanophotonics can enable the industry to keep pace with increasing demands.

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Silicon seamlessly connects various parts of large systems due to which nanophotonics technology can provide answers to Big Data challenges whether few centimeters or few kilometers apart from each other, and move terabytes of data via pulses of light through optical fibers. A new era of computing that requires systems to process and analyze, in real-time, huge volumes of information known as Big Data. A variety of silicon nanophotonics components such as wavelength division multiplexers (WDM), modulators, and detectors are integrated side-by-side with a CMOS electrical circuitry by adding a few processing modules into a high-performance 90nm CMOS fabrication line.IBM’s CMOS nanophotonics innovation shows handsets to surpass the information rate of 25Gbps for every channel. What’s more, the innovation is fit for bolstering various parallel optical information streams into a solitary fiber by using minimized on-chip wavelength-division multiplexing gadgets. The capacity to multiplex huge information streams at high information rates will permit future scaling of optical interchanges fit for conveying terabytes of information between far-off parts of PC frameworks.

Nanocarbon and its bioactivity

The aim of this topic is the production, characterization, modification and biological properties investigation of carbon-based nanostructured materials for biosensing applications and in particular for the development of a DNA detection device. The first stage is aimed to produce worthwhile quantities of vertically well-oriented multi-walled carbon nanotubes on uncoated silicon substrates by a simple and economical chemical vapour deposition process.

The as-grown material will be characterized and then chemically modified Subsequently. The chemical modification is the reason of the tuning of the chemical properties of the CNTs and It allows a different response to different biomolecules. Several functionalization treatments will be attempted to tailor the CNT properties for the foreseen applications. the chemical insertion of nucleic acids, proteins and other biological molecules on CNTs consequently will make possible to produce nano-biological sensors which are allowed by the presence of reactive groups on the material surface. The ferromagnetic particles trapped inside the CNT hollow cavities can enable the production of systems that can migrate below a magnetic field effect.

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To make them biocompatible and useful as biosensors or as coatings for biomedical devices, The interaction of biomolecules with CNTs will be studied. The interaction mechanisms between CNT surface and blood are characterized by a complex series of events that are yet not clearly understood. The aim of this research activity is to investigate the relationship between surface properties (chemistry, hydrophobicity-hydrophilicity and topography) and biological responses such as the composition and structure of the adsorbed plasma protein layer and platelet adhesion/activation properties. In this work the behaviour of CNTs compared to various forms of carbon (pyrolitic carbon, nanocrystalline graphite and amorphous carbon) will be investigated. Besides the study of conformation and orientation of adherent proteins, the adhesion extent of various DNA (oligonucleotides, genomic DNA) structures will be evaluated to gain fundamental knowledge useful for both the development of CNT based biosensors and the development of innovative materials for genomic DNA isolation (see Latemar project on Lab-on-Chip).

Surface-Changed Carbons as Platinum Catalyst Support for PEM Energy Components

Proton exchange membrane (PEM) power devices are electrochemical gadgets which straightforwardly change over concoction vitality into electrical vitality. Various focal points over customary vitality sources, for example, a high vitality change productivity and power yield, effortlessness of configuration, low commotion and for all intents and purposes no ecological contamination at the purpose of task make energy units a developing innovation for both stationary and versatile power applications. The electrochemical responses that drive a PEM power device are altogether quickened by the nearness of an electrocatalyst, particularly the oxygen reduction reaction (ORR) happening at the cell cathode.

Among the assortment of valuable metals and their combinations that have been utilized as electrocatalysts in PEM power devices, platinum has been appeared to have the most noteworthy reactant action for oxygen diminishment. The monetary plausibility of PEM energy components is specifically connected to decreasing the cost of these impetuses. The cost can be fundamentally decreased by homogeneous testimony of finely partitioned platinum particles on high surface area supports. Such a statement helps in bringing down the impetus stacking required for satisfactory reactant movement while accomplishing ideal platinum usage. Various research bunches have embraced this approach and detailed great energy unit exhibitions with platinum loadings as low as 0.1 mgPt/cm2.

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A platinum precursor complex, chloroplatinic corrosive was artificially diminished to finely partitioned colloidal platinum, which was then adsorbed onto the functionalized carbon surface. This technique included first sonicating 0.5 g of the functionalized carbon in 50 ml deionized water for 2 min, trailed by extension of 5– 7 ml of ethanol to the carbon slurry.From there on a 0.3 g arrangement of chloroplatinic corrosive was added drop-by-drop to the carbon slurry. Composite Polymer Abundance amounts of 30 g/l fluid arrangements of different diminishing specialists, for example, sodium dithionite, sodium bisulfite, sodium citrate, sodium borohydride were then added to the carbon slurry/chloroplatinic corrosive blend. For each lessening specialist utilized, resulting diminishment of the chloroplatinic corrosive to colloidal platinum was done over the temperature window of 45– 85 C with the combination temperature for each example expanding by 10 C.

Acid treatment on the carbon tests was completed utilizing nitric corrosive and a blend of nitric and sulfuric acids. The double corrosive blend turned out to be excessively solid a concoction situation for the enacted carbons, which disintegrated in them. The nanofibers could withstand the very forceful double corrosive assault confirming their unrivaled concoction obstruction. Checking electron magnifying instrument (SEM) pictures of nitric corrosive treated carbon nanofibers and SX Ultra Cat actuated carbon. The nanofibers seem spotless and without particulate pollutions. No proof of any harm to the tubular structure of the nanofibers because of the corrosive treatment was watched. The corrosive treatment did not appear to radically adjust the morphology of the initiated carbons.

 

Making of Error Free Nanostructure using Protein “Rebar” which is better than DNA Origami

Strands of DNA can fit together like Lego blocks to make nanoscale objects of complex shape and structure. So DNA is also the stuff of nanotechnology. To realize a key goal: building durable miniature devices such as biosensors and drug-delivery containers, researchers need to work with much larger collections of DNA which is been difficult because Floppiness of long chains of DNA  and the standard method of assembling long chains is prone to error.

RecA, the DNA binding proteins are useful as a kind reinforcing bar, to support the floppy DNA scaffolding by constructing several of the largest rectangular, linear and other shapes which have ever assembled from DNA by the researchers of the National Institute of Standards and Technology (NIST) .these are two to three times larger than those built using standard DNA self-assembly techniques. Reduction of the number of errors in constructing the shapes is required by using fewer chemically distinct pieces to build organized structures which are known as DNA origami.

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The NIST scientists integrated filaments of RecA into the assembly of DNA structures. The advantage is it automatically attracts other units to line up alongside it if Once one unit of the protein binds to a small segment of double-stranded DNA. RecA stretches, widens and strengthens the DNA strands for which 2-nanometer-wide strand of DNA can transform into a rigid structure more than four times as wide. The RecA method greatly extends the ability of DNA self-assembly methods to build larger and more sophisticated structures.

In DNA origami, short strands of DNA with particular sequence of four base pairs are used as staples to tie together in long sections of DNA. By quickly using up the long string, the strand may loop back on itself to make the skinny DNA skeleton stronger and thicker. The new method goes beyond the DNA origami techniques. The skinny piece of single-stranded DNA lies in between the location of the short, single-stranded pieces of DNA that act as staples mark. A section of the long piece of single-stranded DNA into the double-stranded version of the molecule is transformed by the enzyme DNA polymerase.

RecA assembles all along the double strand and limiting the need for extra staples to maintain its shape. RecA method is likely able to build organized structures with fewer errors than DNA origami with the use of fewer staple.