Patent
US 10,739,650OF THE I NVENTION
Rajratan Basu
The Government of the United States of America·US
Copyright © 2026 Matter42. All rights reserved.
Patent
Atlas literature
Patent
US 10,739,650Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 B illustrates results when the h-BN/ITO cell (filled with LC E₇) was rotated under a crossed- polarized microscope to record the change in the …
FIG. 2A illustrates the micrographs of the LC texture in the h-BN/ITO device under the crossed polarized microscope at different ac voltages.
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electro-optical liquid crystal cell, comprising: a first substrate; a first layer of indium tin oxide (ITO) on the first substrate; a first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet on the first layer of ITO on the first substrate; wherein the first la y er of two-dimensional hexagonal boron nitride (h-BN) nanosheet has a thickness of about 0.3 nm; and a layer of liquid crystal on the first layer of h-BN on the first layer of ITO on the first substrate. wherein the la y er of liquid cr y stal comprises liquid cr y stal molecules; and wherein the liquid cr y stal molecules achieve a uniform planar aligned state due to the epitaxial interaction between the liquid cr y stal molecules and the h-BN nanosheet. Currently amended
The electro-optical liquid crystal cell of claim 1, further comprising: a second layer of h-BN nanosheet on the layer of liquid crystal; wherein the first la y er of two-dimensional h-BN nanosheet and the second la yer of h-BN nanosheet are aligned in the same direction to promote uniaxial liquid Applicant: The Government of the United States of America Inventor: Basu crystal alignment in the cell; a second layer of ITO on the second layer of h-BN on the layer of liquid crystal; and a second substrate on the second layer of ITO on the second layer of h-BN on the layer of liquid crystal. Currently amended
Canceled
Canceled
An electro-optical liquid crystal cell utilizing a two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent, comprising: a first and second substrate; Applicant: The Government of the United States of America Inventor: Basu a layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar- alignment agent on at least one of the first and second substrate; and a liquid crystal material between the first and second substrate; wherein an epitaxial interaction exists between the liquid crystal and the h-BN nanosheet. Currently amended
A method of making an electro-optical liquid crystal cell, comprising: providing a first substrate; providing a first layer of indium tin oxide (ITO) on the first substrate; providing a first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent on the first layer of ITO on the first substrate; and providing a layer of liquid crystal on the first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent on the first layer of ITO on the first substrate; wherein the layer of liquid crystal comprises liquid crystal molecules; and wherein the liquid crystal molecules achieve a uniform planar aligned state due to the epitaxial interaction between the liquid crystal molecules and the h-BN nanosheet. Currently amended
The method of making an electro-optical liquid crystal cell of claim 8, further comprising the steps of: providing a second layer of two-dimensional h-BN on the layer of liquid crystal; providing a second layer of ITO on the second layer of two-dimensional h-BN on the layer of liquid crystal; and Applicant: The Gover nm ent of the United S t ates of A me rica Inventor: B asu providing a second substrate on the second layer of ITO on the second layer of two- dimensional h-BN on the layer of liquid crystal. Currently amended
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Describes the fundamental principle of using 2D h-BN as the planar-alignment agent for liquid crystal. The B-N bond length in h-BN (1.44 Å) is nearly identical to the C-C bond length in benzene (1.40 Å), causing nano-architectural symmetry that allows LC benzene rings to align coherently on the hexagonal h-BN lattice.
2 materials1 process step
Fabrication of the electro-optic LC cell employing 2D h-BN as the planar-alignment agent. CVD-grown monolayer h-BN film on copper foil was obtained from Graphene Supermarket, Inc. PMMA-assisted wet transfer was used to transfer the monolayer h-BN film from copper foil onto 2.5 x 2.5 cm² ITO-coated glass substrates. The h-BN-based cell with average cell-gap d = 9 µm was prepared by placing two h-BN/ITO glass substrates together with h-BN sides facing each other in the same direction.
3 materials
Alignment testing of prototype h-BN/ITO cell filled with LC E₇ under crossed-polarized microscope. The cell was rotated at every 20° rotation step recording change in transmitted intensity. Bright uniform texture observed at 45° and dark uniform texture at 90° to crossed polarizers, confirming uniform planar alignment imposed by 2D h-BN due to hexagonal symmetry matching between LC benzene rings and h-BN honeycomb structure.
3 materials
Electro-optical effect of LC in h-BN/ITO cell. The h-BN/ITO LC cell exhibits the typical electrically-controlled birefringence effect (ECBE) essential for LCD technology. As applied electric field exceeds threshold, the LC director n rotates from planar to homeotropic orientation, changing effective birefringence as a function of applied voltage.
Layer stacks claimed or described, ordered top of device to substrate.
electro-optical liquid crystal cell (h-BN/ITO cell)
Materials described outside the worked examples.
polymethyl methacrylate
PMMA
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
h-BN nanosheet monolayer thickness | 0.3 nm | h-BN |
h-BN/ITO LC cell average cell-gap |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,739,650Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 B illustrates results when the h-BN/ITO cell (filled with LC E₇) was rotated under a crossed- polarized microscope to record the change in the …
FIG. 2A illustrates the micrographs of the LC texture in the h-BN/ITO device under the crossed polarized microscope at different ac voltages.
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electro-optical liquid crystal cell, comprising: a first substrate; a first layer of indium tin oxide (ITO) on the first substrate; a first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet on the first layer of ITO on the first substrate; wherein the first la y er of two-dimensional hexagonal boron nitride (h-BN) nanosheet has a thickness of about 0.3 nm; and a layer of liquid crystal on the first layer of h-BN on the first layer of ITO on the first substrate. wherein the la y er of liquid cr y stal comprises liquid cr y stal molecules; and wherein the liquid cr y stal molecules achieve a uniform planar aligned state due to the epitaxial interaction between the liquid cr y stal molecules and the h-BN nanosheet. Currently amended
The electro-optical liquid crystal cell of claim 1, further comprising: a second layer of h-BN nanosheet on the layer of liquid crystal; wherein the first la y er of two-dimensional h-BN nanosheet and the second la yer of h-BN nanosheet are aligned in the same direction to promote uniaxial liquid Applicant: The Government of the United States of America Inventor: Basu crystal alignment in the cell; a second layer of ITO on the second layer of h-BN on the layer of liquid crystal; and a second substrate on the second layer of ITO on the second layer of h-BN on the layer of liquid crystal. Currently amended
Canceled
Canceled
An electro-optical liquid crystal cell utilizing a two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent, comprising: a first and second substrate; Applicant: The Government of the United States of America Inventor: Basu a layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar- alignment agent on at least one of the first and second substrate; and a liquid crystal material between the first and second substrate; wherein an epitaxial interaction exists between the liquid crystal and the h-BN nanosheet. Currently amended
A method of making an electro-optical liquid crystal cell, comprising: providing a first substrate; providing a first layer of indium tin oxide (ITO) on the first substrate; providing a first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent on the first layer of ITO on the first substrate; and providing a layer of liquid crystal on the first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent on the first layer of ITO on the first substrate; wherein the layer of liquid crystal comprises liquid crystal molecules; and wherein the liquid crystal molecules achieve a uniform planar aligned state due to the epitaxial interaction between the liquid crystal molecules and the h-BN nanosheet. Currently amended
The method of making an electro-optical liquid crystal cell of claim 8, further comprising the steps of: providing a second layer of two-dimensional h-BN on the layer of liquid crystal; providing a second layer of ITO on the second layer of two-dimensional h-BN on the layer of liquid crystal; and Applicant: The Gover nm ent of the United S t ates of A me rica Inventor: B asu providing a second substrate on the second layer of ITO on the second layer of two- dimensional h-BN on the layer of liquid crystal. Currently amended
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Describes the fundamental principle of using 2D h-BN as the planar-alignment agent for liquid crystal. The B-N bond length in h-BN (1.44 Å) is nearly identical to the C-C bond length in benzene (1.40 Å), causing nano-architectural symmetry that allows LC benzene rings to align coherently on the hexagonal h-BN lattice.
2 materials1 process step
Fabrication of the electro-optic LC cell employing 2D h-BN as the planar-alignment agent. CVD-grown monolayer h-BN film on copper foil was obtained from Graphene Supermarket, Inc. PMMA-assisted wet transfer was used to transfer the monolayer h-BN film from copper foil onto 2.5 x 2.5 cm² ITO-coated glass substrates. The h-BN-based cell with average cell-gap d = 9 µm was prepared by placing two h-BN/ITO glass substrates together with h-BN sides facing each other in the same direction.
3 materials
Alignment testing of prototype h-BN/ITO cell filled with LC E₇ under crossed-polarized microscope. The cell was rotated at every 20° rotation step recording change in transmitted intensity. Bright uniform texture observed at 45° and dark uniform texture at 90° to crossed polarizers, confirming uniform planar alignment imposed by 2D h-BN due to hexagonal symmetry matching between LC benzene rings and h-BN honeycomb structure.
3 materials
Electro-optical effect of LC in h-BN/ITO cell. The h-BN/ITO LC cell exhibits the typical electrically-controlled birefringence effect (ECBE) essential for LCD technology. As applied electric field exceeds threshold, the LC director n rotates from planar to homeotropic orientation, changing effective birefringence as a function of applied voltage.
Layer stacks claimed or described, ordered top of device to substrate.
electro-optical liquid crystal cell (h-BN/ITO cell)
Materials described outside the worked examples.
polymethyl methacrylate
PMMA
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
h-BN nanosheet monolayer thickness | 0.3 nm | h-BN |
h-BN/ITO LC cell average cell-gap |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,739,650Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 B illustrates results when the h-BN/ITO cell (filled with LC E₇) was rotated under a crossed- polarized microscope to record the change in the …
FIG. 2A illustrates the micrographs of the LC texture in the h-BN/ITO device under the crossed polarized microscope at different ac voltages.
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electro-optical liquid crystal cell, comprising: a first substrate; a first layer of indium tin oxide (ITO) on the first substrate; a first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet on the first layer of ITO on the first substrate; wherein the first la y er of two-dimensional hexagonal boron nitride (h-BN) nanosheet has a thickness of about 0.3 nm; and a layer of liquid crystal on the first layer of h-BN on the first layer of ITO on the first substrate. wherein the la y er of liquid cr y stal comprises liquid cr y stal molecules; and wherein the liquid cr y stal molecules achieve a uniform planar aligned state due to the epitaxial interaction between the liquid cr y stal molecules and the h-BN nanosheet. Currently amended
The electro-optical liquid crystal cell of claim 1, further comprising: a second layer of h-BN nanosheet on the layer of liquid crystal; wherein the first la y er of two-dimensional h-BN nanosheet and the second la yer of h-BN nanosheet are aligned in the same direction to promote uniaxial liquid Applicant: The Government of the United States of America Inventor: Basu crystal alignment in the cell; a second layer of ITO on the second layer of h-BN on the layer of liquid crystal; and a second substrate on the second layer of ITO on the second layer of h-BN on the layer of liquid crystal. Currently amended
Canceled
Canceled
An electro-optical liquid crystal cell utilizing a two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent, comprising: a first and second substrate; Applicant: The Government of the United States of America Inventor: Basu a layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar- alignment agent on at least one of the first and second substrate; and a liquid crystal material between the first and second substrate; wherein an epitaxial interaction exists between the liquid crystal and the h-BN nanosheet. Currently amended
A method of making an electro-optical liquid crystal cell, comprising: providing a first substrate; providing a first layer of indium tin oxide (ITO) on the first substrate; providing a first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent on the first layer of ITO on the first substrate; and providing a layer of liquid crystal on the first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent on the first layer of ITO on the first substrate; wherein the layer of liquid crystal comprises liquid crystal molecules; and wherein the liquid crystal molecules achieve a uniform planar aligned state due to the epitaxial interaction between the liquid crystal molecules and the h-BN nanosheet. Currently amended
The method of making an electro-optical liquid crystal cell of claim 8, further comprising the steps of: providing a second layer of two-dimensional h-BN on the layer of liquid crystal; providing a second layer of ITO on the second layer of two-dimensional h-BN on the layer of liquid crystal; and Applicant: The Gover nm ent of the United S t ates of A me rica Inventor: B asu providing a second substrate on the second layer of ITO on the second layer of two- dimensional h-BN on the layer of liquid crystal. Currently amended
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Describes the fundamental principle of using 2D h-BN as the planar-alignment agent for liquid crystal. The B-N bond length in h-BN (1.44 Å) is nearly identical to the C-C bond length in benzene (1.40 Å), causing nano-architectural symmetry that allows LC benzene rings to align coherently on the hexagonal h-BN lattice.
2 materials1 process step
Fabrication of the electro-optic LC cell employing 2D h-BN as the planar-alignment agent. CVD-grown monolayer h-BN film on copper foil was obtained from Graphene Supermarket, Inc. PMMA-assisted wet transfer was used to transfer the monolayer h-BN film from copper foil onto 2.5 x 2.5 cm² ITO-coated glass substrates. The h-BN-based cell with average cell-gap d = 9 µm was prepared by placing two h-BN/ITO glass substrates together with h-BN sides facing each other in the same direction.
3 materials
Alignment testing of prototype h-BN/ITO cell filled with LC E₇ under crossed-polarized microscope. The cell was rotated at every 20° rotation step recording change in transmitted intensity. Bright uniform texture observed at 45° and dark uniform texture at 90° to crossed polarizers, confirming uniform planar alignment imposed by 2D h-BN due to hexagonal symmetry matching between LC benzene rings and h-BN honeycomb structure.
3 materials
Electro-optical effect of LC in h-BN/ITO cell. The h-BN/ITO LC cell exhibits the typical electrically-controlled birefringence effect (ECBE) essential for LCD technology. As applied electric field exceeds threshold, the LC director n rotates from planar to homeotropic orientation, changing effective birefringence as a function of applied voltage.
Layer stacks claimed or described, ordered top of device to substrate.
electro-optical liquid crystal cell (h-BN/ITO cell)
Materials described outside the worked examples.
polymethyl methacrylate
PMMA
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
h-BN nanosheet monolayer thickness | 0.3 nm | h-BN |
h-BN/ITO LC cell average cell-gap |
Related documents with shared materials, methods, properties, or citations.
Patent
Atlas literature
Patent
US 10,739,650Patent drawings and their descriptions. Click a drawing to enlarge it.
FIG. 1 B illustrates results when the h-BN/ITO cell (filled with LC E₇) was rotated under a crossed- polarized microscope to record the change in the …
FIG. 2A illustrates the micrographs of the LC texture in the h-BN/ITO device under the crossed polarized microscope at different ac voltages.
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
Claims define the patent's legal scope. Independent claims stand alone; dependent claims (nested) narrow them. Click a claim to expand its dependents.
An electro-optical liquid crystal cell, comprising: a first substrate; a first layer of indium tin oxide (ITO) on the first substrate; a first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet on the first layer of ITO on the first substrate; wherein the first la y er of two-dimensional hexagonal boron nitride (h-BN) nanosheet has a thickness of about 0.3 nm; and a layer of liquid crystal on the first layer of h-BN on the first layer of ITO on the first substrate. wherein the la y er of liquid cr y stal comprises liquid cr y stal molecules; and wherein the liquid cr y stal molecules achieve a uniform planar aligned state due to the epitaxial interaction between the liquid cr y stal molecules and the h-BN nanosheet. Currently amended
The electro-optical liquid crystal cell of claim 1, further comprising: a second layer of h-BN nanosheet on the layer of liquid crystal; wherein the first la y er of two-dimensional h-BN nanosheet and the second la yer of h-BN nanosheet are aligned in the same direction to promote uniaxial liquid Applicant: The Government of the United States of America Inventor: Basu crystal alignment in the cell; a second layer of ITO on the second layer of h-BN on the layer of liquid crystal; and a second substrate on the second layer of ITO on the second layer of h-BN on the layer of liquid crystal. Currently amended
Canceled
Canceled
An electro-optical liquid crystal cell utilizing a two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent, comprising: a first and second substrate; Applicant: The Government of the United States of America Inventor: Basu a layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar- alignment agent on at least one of the first and second substrate; and a liquid crystal material between the first and second substrate; wherein an epitaxial interaction exists between the liquid crystal and the h-BN nanosheet. Currently amended
A method of making an electro-optical liquid crystal cell, comprising: providing a first substrate; providing a first layer of indium tin oxide (ITO) on the first substrate; providing a first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent on the first layer of ITO on the first substrate; and providing a layer of liquid crystal on the first layer of two-dimensional hexagonal boron nitride (h-BN) nanosheet as the planar-alignment agent on the first layer of ITO on the first substrate; wherein the layer of liquid crystal comprises liquid crystal molecules; and wherein the liquid crystal molecules achieve a uniform planar aligned state due to the epitaxial interaction between the liquid crystal molecules and the h-BN nanosheet. Currently amended
The method of making an electro-optical liquid crystal cell of claim 8, further comprising the steps of: providing a second layer of two-dimensional h-BN on the layer of liquid crystal; providing a second layer of ITO on the second layer of two-dimensional h-BN on the layer of liquid crystal; and Applicant: The Gover nm ent of the United S t ates of A me rica Inventor: B asu providing a second substrate on the second layer of ITO on the second layer of two- dimensional h-BN on the layer of liquid crystal. Currently amended
Embodiments described in the patent, grouped by the materials and process steps they use.
2 materials
Describes the fundamental principle of using 2D h-BN as the planar-alignment agent for liquid crystal. The B-N bond length in h-BN (1.44 Å) is nearly identical to the C-C bond length in benzene (1.40 Å), causing nano-architectural symmetry that allows LC benzene rings to align coherently on the hexagonal h-BN lattice.
2 materials1 process step
Fabrication of the electro-optic LC cell employing 2D h-BN as the planar-alignment agent. CVD-grown monolayer h-BN film on copper foil was obtained from Graphene Supermarket, Inc. PMMA-assisted wet transfer was used to transfer the monolayer h-BN film from copper foil onto 2.5 x 2.5 cm² ITO-coated glass substrates. The h-BN-based cell with average cell-gap d = 9 µm was prepared by placing two h-BN/ITO glass substrates together with h-BN sides facing each other in the same direction.
3 materials
Alignment testing of prototype h-BN/ITO cell filled with LC E₇ under crossed-polarized microscope. The cell was rotated at every 20° rotation step recording change in transmitted intensity. Bright uniform texture observed at 45° and dark uniform texture at 90° to crossed polarizers, confirming uniform planar alignment imposed by 2D h-BN due to hexagonal symmetry matching between LC benzene rings and h-BN honeycomb structure.
3 materials
Electro-optical effect of LC in h-BN/ITO cell. The h-BN/ITO LC cell exhibits the typical electrically-controlled birefringence effect (ECBE) essential for LCD technology. As applied electric field exceeds threshold, the LC director n rotates from planar to homeotropic orientation, changing effective birefringence as a function of applied voltage.
Layer stacks claimed or described, ordered top of device to substrate.
electro-optical liquid crystal cell (h-BN/ITO cell)
Materials described outside the worked examples.
polymethyl methacrylate
PMMA
Measurements and analyses referenced in the patent, with their drawing references.
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
Performance values and ranges asserted in the specification or claims.
| Property | Value | Material |
|---|---|---|
h-BN nanosheet monolayer thickness | 0.3 nm | h-BN |
h-BN/ITO LC cell average cell-gap |
Related documents with shared materials, methods, properties, or citations.
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
| 9 µm |
| — |
B-N bond length in h-BN lattice | 1.44 Å | h-BN |
Thickness | ≤ 1 nm | — |
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
| 9 µm |
| — |
B-N bond length in h-BN lattice | 1.44 Å | h-BN |
Thickness | ≤ 1 nm | — |
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
| 9 µm |
| — |
B-N bond length in h-BN lattice | 1.44 Å | h-BN |
Thickness | ≤ 1 nm | — |
FIG. 3. Example 5 In the commercial cell, the total thickness of the two rubbed planar-aligning P I (K PI-3 00 B, Kelead Photoelectric Materials Co., Ltd.) …
| 9 µm |
| — |
B-N bond length in h-BN lattice | 1.44 Å | h-BN |
Thickness | ≤ 1 nm | — |