11 research outputs found
Servitude et grandeur militaires
Ä abra ta’ poeżiji u proża li tinkludi: Notturn op. 9 nru 2 ta’ Beverly Agius – Naf ta’ Carmel Azzopardi – Ħsejjes ħajja ta’ Clifton Azzopardi – Il-Ä¡rajja t’għasfur stramb ta’ Mario Azzopardi – Tektik...u għana ta’ Rena Balzan – Kun af li f’qiegħ għajnejk ta’ Charles Bezzina – Il-qalb imwebbsa ta’ Ä orÄ¡ Borg – Bħal ħuta mÄ¡ewħa ta’ Louis Briffa – Taħt il-Mezquita, Cordòba ta’ Norbert Bugeja – Il-maskarat ta’ Alfred Degabriele – Trid mara ta’ Leanne Ellul – Id-dgħajsa ta’ Victor Fenech – Ilħna ta’ Joe Friggieri – Roulette ta’ Joe Friggieri – Għera ta’ Joe P. Galea – ĦġieÄ¡a ta’ Maria Grech Ganado – Ä enna qatt mirbuħa ta’ Karmenu Mallia – Il-fantażma tal-mara mqarba ta’ Albert Marshall – Daħlet Qorrot ta’ Daniel Massa – Granada, parque central ta’ Immanuel Mifsud – Waħda mara ta’ Immanuel Mifsud – Mors ta’ Therese Pace – Għada ta’ Alfred Palma – Emmint xejn ma jintemm ta’ Ä orÄ¡ Peresso – Tuffieħa bl-imsiemer tal-qronfol ta’ John Peter Portelli – Lil Karmenu Vassallo ta’ Andrew Sciberras – Irrid il-qamar jiddi ta’ Carmel Scicluna – Din il-biÄ‹Ä‹a ħuta ta’ Steve Borg – Karta li taret mar-riħ ta’ Lina Brockdorff – Nixtieq, u kemm nixtieq! ta’ J. J. Camilleri – Caterina ta’ Sandro Mangion – L-għajta tal-pappagall ta’ Pierre J. Mejlak – Id-destin ta’ Laurence Mizzi – L-arloÄ¡Ä¡ tal-bozza ta’ Rita Saliba – Kurżità ta’ Alfred Sant – Il-Ä¡eneral ta’ Vincent Vella – Mirja ta’ Trevor Å»ahra – L-adulteri ta’ Golan Haji, traduzzjoni ta’ Clare Azzopardi u Albert Gatt – L-istennija ta’ Berislav Blagojević, traduzzjoni ta’ Kit Azzopardi – Il-qattus ta’ Ghassan Kanafani, traduzzjoni ta’ Walid Nabhan – L-iben addottat ta’ Guy de Maupassant, traduzzjoni ta’ Josette Attard – Sunett nru. 18 ta’ William Shakespeare, traduzzjoni ta’ Alfred Palma – Llanto por Ignacio Sánchez MejÃas ta’ Federico Garcia Lorca, traduzzjoni ta’ Therese Pace – Servitude et grandeur militaires ta’ Alfred de Vigny, traduzzjoni ta’ Paul Zahra.peer-reviewe
Band bending and ratcheting explain triboelectricity in a flexoelectric contact diode
Triboelectricity was recognized millennia ago, but the fundamental mechanism
of charge transfer is still not understood. We have recently proposed a model
where flexoelectric band bending due to local asperity contacts drives
triboelectric charge transfer in non-metals. While this ab-initio model is
consistent with a wide range of observed phenomena, to date there have been no
quantitative analyses of the proposed band bending. In this work we use a
PtIr conductive atomic force microscope probe
to simultaneously deform a Nb-doped SrTiO sample and collect
current-bias data. The current that one expects based upon an analysis
including the relevant flexoelectric band-bending for a deformed semiconductor
quantitively agrees with the experiments. The analysis indicates a general
ratcheting mechanism for triboelectric transfer and strong experimental
evidence that flexoelectric band-bending is of fundamental importance for
triboelectric contacts
Direct Observation of Large Flexoelectric Bending at the Nanoscale in Lanthanide Scandates
There
is a growing interest in the flexoelectric effect, since
at the nanoscale it is predicted to be very large. However, there
have been no direct observations of flexoelectric bending consistent
with current theoretical work that implies strains comparable to or
exceeding the yield strains of typical materials. Here we show a direct
observation of extraordinarily large, two-dimensional reversible bending
at the nanoscale in dysprosium scandate due to the converse flexoelectric
effect, with similar results for terbium and gadolinium scandate.
Within a transmission electron microscope, thin features bend up to
90° with radii of curvature of about 1 μm, corresponding
to very large nominal strains. Analysis including independent experimental
determination of the flexoelectric coefficient is semiquantitatively
consistent with interpreting the results as due to flexoelectricity.
These results experimentally demonstrate large flexoelectric bending
at the nanoscale
Direct Observation of Large Flexoelectric Bending at the Nanoscale in Lanthanide Scandates
There
is a growing interest in the flexoelectric effect, since
at the nanoscale it is predicted to be very large. However, there
have been no direct observations of flexoelectric bending consistent
with current theoretical work that implies strains comparable to or
exceeding the yield strains of typical materials. Here we show a direct
observation of extraordinarily large, two-dimensional reversible bending
at the nanoscale in dysprosium scandate due to the converse flexoelectric
effect, with similar results for terbium and gadolinium scandate.
Within a transmission electron microscope, thin features bend up to
90° with radii of curvature of about 1 μm, corresponding
to very large nominal strains. Analysis including independent experimental
determination of the flexoelectric coefficient is semiquantitatively
consistent with interpreting the results as due to flexoelectricity.
These results experimentally demonstrate large flexoelectric bending
at the nanoscale
Direct Observation of Large Flexoelectric Bending at the Nanoscale in Lanthanide Scandates
There
is a growing interest in the flexoelectric effect, since
at the nanoscale it is predicted to be very large. However, there
have been no direct observations of flexoelectric bending consistent
with current theoretical work that implies strains comparable to or
exceeding the yield strains of typical materials. Here we show a direct
observation of extraordinarily large, two-dimensional reversible bending
at the nanoscale in dysprosium scandate due to the converse flexoelectric
effect, with similar results for terbium and gadolinium scandate.
Within a transmission electron microscope, thin features bend up to
90° with radii of curvature of about 1 μm, corresponding
to very large nominal strains. Analysis including independent experimental
determination of the flexoelectric coefficient is semiquantitatively
consistent with interpreting the results as due to flexoelectricity.
These results experimentally demonstrate large flexoelectric bending
at the nanoscale
Direct Observation of Large Flexoelectric Bending at the Nanoscale in Lanthanide Scandates
There
is a growing interest in the flexoelectric effect, since
at the nanoscale it is predicted to be very large. However, there
have been no direct observations of flexoelectric bending consistent
with current theoretical work that implies strains comparable to or
exceeding the yield strains of typical materials. Here we show a direct
observation of extraordinarily large, two-dimensional reversible bending
at the nanoscale in dysprosium scandate due to the converse flexoelectric
effect, with similar results for terbium and gadolinium scandate.
Within a transmission electron microscope, thin features bend up to
90° with radii of curvature of about 1 μm, corresponding
to very large nominal strains. Analysis including independent experimental
determination of the flexoelectric coefficient is semiquantitatively
consistent with interpreting the results as due to flexoelectricity.
These results experimentally demonstrate large flexoelectric bending
at the nanoscale