A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
Filters
The Theory of Multiple Peeling
[article]
2009
arXiv
pre-print
Preserved Fulltext
In this paper we solve the multiple peeling problem by applying a fracture mechanics approach to a complex system of films, adhering to the substrate and having a common hinge, where the pulling force is applied. The simplest V-shaped system, consisting of two identical peeling tapes is considered as a case study (to be solved coupling six nonlinear equations); an optimal peeling angle, at which adhesion is maximal, is discovered.
arXiv:0903.0935v1
fatcat:mpkuzbvrq5df5gfofdppnvpj6i
Optimal Angles for Maximal Adhesion in Living Tokay Geckos
2012
The journal of adhesion
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
M., K. Autumn, and J. ...
per gecko), t F ¼ 10 mm) and toes (n T ¼ 5 (five toes per each foot), t T ¼ 4 mm), the Young modulus E T ¼ E F ¼ 1 GPa, and, using the work of adhesion, c, of [53] (varying in the range 10 3 -10 6 J=m ...
doi:10.1080/00218464.2012.705639
fatcat:nd7mwnr4mzbknfn4wivjzirjpa
Quantized fracture mechanics
2004
Philosophical Magazine
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
M. Pugno and R. S. ...
M. Pugno and R. S. Ruoff } 9. ...
A simple estimation of the fracture toughness could be obtained considering the bond dissociation energy from the Brenner potential (124 kcal/mole of C-C bonds), yielding % 4.46 N/m. ...
doi:10.1080/14786430412331280382
fatcat:rfyhnkpvhjcuhnncunwau6veeu
A Universal Scaling Law for Nanoindentation, But Not only
[article]
2006
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
GPa 1 . 0 ≈ macro H µm 200 * ≈ R GPa 2 ≈ nano H GPa 9 . 0 ≈ macro H µm 6 . 3 * ≈ R GPa 2 ≈ nano H Furthermore, we note that at the truly nanoscale we expect even higher values for . ...
Similar results with the same sets of parameters were observed for pyramidal µm
80
<
R
GPa
9
.
0
≈
macro
H
,
or (b)
µm
250
* ≈
R
GPa
6
.
0
≈
macro
H
,
. ...
arXiv:cond-mat/0601369v1
fatcat:tssoit2kajdl3bojzv5ihaan24
Flexible nanovectors
2008
Journal of Physics: Condensed Matter
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
A = M 2m/3 m F A (20) where M m is the number of sub-nanovectors at the stage m. ...
Note that, from equation (9) , the ratio between the total adhesion forces required to delaminate the M sub-nanovectors and the mother nanovector is F (M) A = M 2/3 F A , and for m stages: F (M m ,m) ...
doi:10.1088/0953-8984/20/47/474205
fatcat:td5xc4fd6bbbpkidmbmwomuuxm
Space elevator: out of order?
2007
Nano Today
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
The probability of finding a nanocrack of size m in a bundle with vacancy fraction f is P(m) = (1 -f)f m . Thus the number M of such nanocracks in a bundle composed of N atoms is M(m) = P(m)N. ...
(in fracture quanta units), σ N (m)/σ N (theo) ≈ (1 + m) -½ (b ≈ 0, m ≈ 2a/q). ...
doi:10.1016/s1748-0132(07)70173-1
fatcat:26wnm3zy4fbobeoo4aat2wtzby
Graded cross-links for stronger nanomaterials
2010
Materials Today
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
For example, considering a chain composed of M perfectly rigid cross-links and subsequently N−M perfectly compliant ones, would occur at a force F = f for the first M cross-links; in order to reach the ...
global failure we must increase the force up to a value of F c = (N -M)f. ...
doi:10.1016/s1369-7021(10)70032-8
fatcat:y3vpxmmebvggjda57g3np3mqxi
Micro- or nano-mechanics
2013
Meccanica (Milano. Print)
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Thermomechanical Stresses in Fullerenes at Nanotube
2008
Journal of Nanomaterials
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
This suggests that fullerenes (other types of nanoparticles can Nicola M. ...
Pugno 5 be envisioned too) could be released from the nanotube by thermal activation, a perhaps useful concept for producing innovative two-stage nanovectors capable of smartly delivering the fullerenes ...
doi:10.1155/2008/156724
fatcat:u57h3vzb7bdkxjotb6odwq33nm
Young's modulus reduction of defective nanotubes
2007
Applied Physics Letters
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
Pugno
Appl. Phys. Lett. 90, 043106 ͑2007͒
1
TABLE II . ...
M. ...
doi:10.1063/1.2425048
fatcat:gen4xr2ltfhg3iqojbvgc6346a
Introduction
2013
Journal of Materials Research
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
The theory of multiple peeling
2011
International Journal of Fracture
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2017; you can also visit the original URL.
The file type is application/pdf.
development of spiderman suit like tissues (Pugno 2007b (Pugno , 2008 . ...
2007a; Pugno and Lepore 2008a,b; Bhushan and Sayer 2007) , aiming to explain and possibly mimic their extraordinary adhesive abilities (Geim et al. 2003 ) even at the human size-scale thus towards the ...
doi:10.1007/s10704-011-9638-2
fatcat:x23wnraphrhrjd6pbnl2me23w4
Tunable Water Channels with Carbon Nanoscrolls
2010
Small
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2018; you can also visit the original URL.
The file type is application/pdf.
Figure 1B shows how the applied electric field influences the dipole-induced surface energy g dipole normalized by g vdW , typically about 0.2 N m À1 . ...
Φ/( 2πL) (nN) r 0 +R (nm) γ dipole =-0.042 N/m B=5000 nm 500 nm 50 nm B) |γ dipole |/γ vdW E (V/nm) U r ij ; l À Á ¼ 4le CC s CC r ij 12 À s CC r ij 6 " # (5)
Results During the simulations, the CNS-water ...
doi:10.1002/smll.200902286
pmid:20196087
fatcat:lahppz7dfngwfgxpmbfj7p5mpy
Fermentation based carbon nanotube bionic functional composites
[article]
2016
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2020; you can also visit the original URL.
The file type is application/pdf.
E m = 1 . 1 46 MPa, while for the daughter cell d d = 4.467 μm and Young's modulus E d = 1.10 MPa. ...
The G' f-cntpo value obtained is thus ~0.024 N/m. ...
arXiv:1603.05407v1
fatcat:r3t2gozgmbfvhdjpeeiud7r6xi
Competition between delamination and fracture in multiple peeling problems
[article]
2019
arXiv
pre-print
Preserved Fulltext
A copy of this work was available on the public web and has been preserved in the Wayback Machine. The capture dates from 2019; you can also visit the original URL.
The file type is application/pdf.
Adhesive attachment systems consisting of multiple tapes or strands are commonly found in nature, for example in spider web anchorages or in mussel byssal threads, and their structure has been found to be ingeniously architected in order to optimize mechanical properties, in particular to maximize dissipated energy before full detachment. These properties emerge from the complex interplay between mechanical and geometric parameters, including tape stiffness, adhesive energy, attached and
arXiv:1906.10756v1
fatcat:ve6go3zfmfbtld2av3akojhz6q
more »
... d lengths and peeling angles, which determine the occurrence of three main mechanisms: elastic deformation, interface delamination and tape fracture. In this paper, we introduce a formalism to evaluate the mechanical performance of multiple tape attachments in different parameter ranges, allowing to predict the corresponding detachment behaviour. We also introduce a numerical model to simulate the complex multiple peeling behaviour of complex structures, illustrating its predictions in the case of the staple-pin architecture. We expect the presented formalism and numerical model to provide important tools for the design of bioinspired adhesive systems with tunable or optimized detachment properties.
« Previous
Showing results 1 — 15 out of 1,010 results