Enhancing the thermoelectric figure of merit in engineered graphene nanoribbons

• Hatef Sadeghi,
• Sara Sangtarash and
• Colin J. Lambert

Beilstein J. Nanotechnol. 2015, 6, 1176–1182, doi:10.3762/bjnano.6.119

• Fourier’s law, where q is the heat flux, κ = κpl + κe is the thermal conductance due to phonons (κpl) and electrons (κe) and is the temperature gradient [1]. Nanostructures show significantly different thermal properties than bulk crystals in which acoustic phonons are the main heat carriers. The reasons

• scattering region and S is the overlap matrix. Results and Discussion Thermal properties of graphene Carbon-based materials show a wide range of thermal properties from about 0.01 W·mK−1 in amorphous carbon to above 2,000 W·mK−1 at room temperature in graphene [1][16][17][18][19] and even higher in few layer

Structural, optical, opto-thermal and thermal properties of ZnS–PVA nanofluids synthesized through a radiolytic approach

• Alireza Kharazmi,
• Nastaran Faraji,
• Roslina Mat Hussin,
• Elias Saion,
• W. Mahmood Mat Yunus and
• Kasra Behzad

Beilstein J. Nanotechnol. 2015, 6, 529–536, doi:10.3762/bjnano.6.55

• , opto-thermal and thermal properties of ZnS–PVA nanofluids synthesized through a room temperature radiolytic method were studied, since these properties are considerable factors in optoelectronic devices. To the best of our knowledge, this is the first report on thermal characteristics of ZnS–PVA

Synthesis of Pt nanoparticles and their burrowing into Si due to synergistic effects of ion beam energy losses

• Pravin Kumar,
• Udai Bhan Singh,
• Kedar Mal,
• Sunil Ojha,
• Indra Sulania,
• Dinakar Kanjilal,
• Dinesh Singh and
• Vidya Nand Singh

Beilstein J. Nanotechnol. 2014, 5, 1864–1872, doi:10.3762/bjnano.5.197

• combination is 846/ion (TRIM calculations). Using the thermal properties of silicon (a specific heat of 710 J/kg∙K and a thermal conductivity of 150 W/m∙K) and electronic energy deposited by the ions in silicon, we expect a spike temperature of about ≈2540 K (within 1 ps and 1 nm away from the ion track) [44

Integration of ZnO and CuO nanowires into a thermoelectric module

• Dario Zappa,
• Simone Dalola,
• Guido Faglia,
• Elisabetta Comini,
• Matteo Ferroni,
• Caterina Soldano,
• Vittorio Ferrari and
• Giorgio Sberveglieri

Beilstein J. Nanotechnol. 2014, 5, 927–936, doi:10.3762/bjnano.5.106

• ) are a family of thermoelectric material that are not widely explored in literature, even if well known in other research areas [5]. Their electronic and thermal properties can be controlled by tuning morphology, doping and stoichiometry, and thus are promising materials for the implementation of

Mechanical and thermal properties of bacterial-cellulose-fibre-reinforced Mater-Bi^® bionanocomposite

• Hamonangan Nainggolan,
• Saharman Gea,
• Emiliano Bilotti,
• Ton Peijs and
• Sabar D. Hutagalung

Beilstein J. Nanotechnol. 2013, 4, 325–329, doi:10.3762/bjnano.4.37

• field emission scanning electron microscope was used to observe the morphology at an accelerating voltage of 10 kV. The crystallinity (Tc) and melting temperature (Tm) were measured by DSC. Results showed a significant improvement in mechanical and thermal properties in accordance with the addition of

• ). SEM images of (a) pure Mater-Bi, (b) FBC and (c) Mater-Bi/FBC. DSC Thermograms of the second crystallinity and melting of Mater-Bi and Mater-Bi/FBC. The thermal properties of Mater-Bi and Mater-Bi/FBC bionanocomposites.

Grating-assisted coupling to nanophotonic circuits in microcrystalline diamond thin films

• Patrik Rath,
• Svetlana Khasminskaya,
• Christoph Nebel,
• Christoph Wild and
• Wolfram H.P. Pernice

Beilstein J. Nanotechnol. 2013, 4, 300–305, doi:10.3762/bjnano.4.33

• broadband transparency of diamond and the good thermal properties, such devices may also be driven at high optical input power. Thus, our approach holds promise for the realization of optical functionality that is currently not available in silicon technology. While our initial demonstration proves the

Characterization and properties of micro- and nanowires of controlled size, composition, and geometry fabricated by electrodeposition and ion-track technology

• Maria Eugenia Toimil-Molares

Beilstein J. Nanotechnol. 2012, 3, 860–883, doi:10.3762/bjnano.3.97

• metal, semimetal, and semiconductor nanowires in polymeric etched ion-track membranes. Particular focus is given to our current efforts to study the influence of size, morphology and crystallinity of nanowires on electrical, optical and thermal properties. In section 1, we discuss the processes involved

• , size effects on the optical, electrical, and thermal properties are of special interest. The following section presents recent results by the GSI group on electrical, optical, and thermal size effects of electrodeposited nanowires. 4.1 Finite-size effects in electrical properties Systematic

Conducting composite materials from the biopolymer kappa-carrageenan and carbon nanotubes

• Ali Aldalbahi,
• Jin Chu,
• Peter Feng and
• Marc in het Panhuis

Beilstein J. Nanotechnol. 2012, 3, 415–427, doi:10.3762/bjnano.3.48

• attracted attention due to their unique electronic, mechanical, optical and thermal properties, which make them suitable for applications in nanotechnology [1][2][3][4]. However, one of the main disadvantages of CNTs is their process-ability; they are difficult to disperse in most common solvents due to

Substrate-mediated effects in photothermal patterning of alkanethiol self-assembled monolayers with microfocused continuous-wave lasers

• Anja Schröter,
• Mark Kalus and
• Nils Hartmann

Beilstein J. Nanotechnol. 2012, 3, 65–74, doi:10.3762/bjnano.3.8

• surface linkage, and the optical and thermal properties of the substrate [11][13]. In this contribution we focus on substrate-mediated effects in photothermal laser patterning of alkanethiol SAMs on Au-coated Si and glass substrates. Patterning experiments are combined with temperature calculations and

• are attributed to the peculiar optical and thermal properties of the Au-coated supports. This, of course, affects the temperature rise on the substrate surface and, hence, is well expected to influence the overall patterning process. Commonly, in photothermal processing with microfocused lasers the

• within the Au film and the laser power required in order to establish a certain peak temperature increases. The distinct thermal properties of the substrates also determine the width of the temperature profiles. The width of the temperature profiles on Au/Si substrates is determined by the Si support

Investigation on structural, thermal, optical and sensing properties of meta-stable hexagonal MoO₃ nanocrystals of one dimensional structure

• Angamuthuraj Chithambararaj and
• Arumugam Chandra Bose

Beilstein J. Nanotechnol. 2011, 2, 585–592, doi:10.3762/bjnano.2.62

• ][8][9][10][11]. Recently, Dhage et al. [12], Ramana et al. [13] and Song et al. [14] have prepared h-MoO3 and studied its structural and thermal properties. Zheng et al. prepared highly dispersed h-MoO3 through a solution-based technique and investigated its photochromic and electrochromic properties

Infrared receptors in pyrophilous (“fire loving”) insects as model for new un-cooled infrared sensors

• David Klocke,
• Anke Schmitz,
• Helmut Soltner,
• Herbert Bousack and
• Helmut Schmitz

Beilstein J. Nanotechnol. 2011, 2, 186–197, doi:10.3762/bjnano.2.22

• plastic matrix or a dye absorbs most of the radiation and transfers the absorbed energy to the fluid, which provides optimal thermal properties and a large thermal expansion. The choice of the plastic matrix must ensure a large surface-to-volume ratio and a low product of density and heat capacity. The

• . Several read-out methods will be evaluated, but it has to be stressed that this search must yield a rugged and cost-effective design in order to be able to compete with existing IR sensors. An obvious method to enhance the displacement of the membrane is to choose liquids with optimal thermal properties