摘要:
A new touch screen is based upon the mapping of coordinates from an equipotential space defined by a simple set of screen electrodes to some other, more useful coordinates, such as Cartesian. The key idea is that unique coordinate mapping can be achieved with each sensing pair of electronic readings. A new sensor is described with a band of intermediate conductivity framing the sensor area. This sensor can be used advantageously either as a standalone with uniform equipotential distributions or in connection with the mapping concepts discussed herein with non-uniform distributions.
摘要:
A method and apparatus for photon scanning tunneling microscopy (10) for examining a sample (20) in a sample area (21) on a surface (16) at a subwavelength resolution is disclosed. The method comprises generating a near-field (18) of photons at a surface (16) containing a sample area (21). The near-field (18) has an area that is larger than the sample area (21), and the near-field (18) has an exponentially increasing intensity in a direction perpendicular to and towards the surface. The near-field (18) is sampled with a probe (26) which receives photons from that near-field (18) that tunnel from the surface (16) to the probe (26). The received photons are detected and a detector (30) produces an output signal that is proportional to the number of photons received by the probe (26). The sample area (21) is scanned with the probe (26) in at least one direction parallel to the surface (16). While scanning, the probe (26) may be maintained either at a position of a constant near-field intensity or at a position of constant distance from the surface (16). A photon scanning tunneling microscope for using the method is also disclosed.
摘要:
A new touch screen based upon the mapping of coordinates from an equipotential (32) space defined by a simple set of screen electrodes to some other more useful coordinates, such as Cartesian. The key idea is that unique coordinate mapping can be achieved with each sensing pair of electronic readings.
摘要:
Un procédé et un appareil de microscopie (10) par balayage photonique à effet de tunnel permettent d'examiner un échantillon (20) dans une zone d'échantillonnage (21) sur une surface (16) avec une résolution de l'ordre de sous-multiples de longueurs d'ondes. Selon le procédé, on génère un champ proche (18) de photons au niveau d'une surface (16) qui contient la zone d'échantillonnage (21). Le champ proche (18) a une superficie plus grande que la zone d'échantillonnage (21) et une intensité qui augmente exponentiellement dans un sens perpendiculaire à la surface, à mesure que l'on s'approche de la surface. Une sonde (26) qui reçoit des photons de ce champ proche (18), les photons se déplaçant par effet de tunnel de la surface (16) à la sonde (26), échantillonne le champ proche (18). Les photons reçus sont détectés et un détecteur (30) produit un signal de sortie proportionnel au nombre de photons reçus par la sonde (26). La zone d'échantillonnage (21) est balayée par la sonde (26) dans au moins une direction parallèle à la surface (16). Pendant le balayage, la sonde (26) peut être maintenue dans une position d'intensité constante du champ proche ou à une distance constante par rapport à la surface (16). Un microscope par balayage photonique à effet de champ sert à mettre en oeuvre le procédé.
摘要:
A new touch screen based upon the mapping of coordinates from an equipotential (32) space defined by a simple set of screen electrodes to some other more useful coordinates, such as Cartesian. The key idea is that unique coordinate mapping can be achieved with each sensing pair of electronic readings.
摘要:
A new touch screen is based upon the mapping of coordinates from an equipotential space defined by a simple set of screen electrodes to some other, more useful coordinates, such as Cartesian. The key idea is that unique coordinate mapping can be achieved with each sensing pair of electronic readings. A new sensor is described with a band of intermediate conductivity framing the sensor area. This sensor can be used advantageously either as a standalone with uniform equipotential distributions or in connection with the mapping concepts discussed herein with non-uniform distributions.